Avos — 20210903
Dated recordFrom extortion.wiki, the ransomware negotiation research archive
A validated static rendering of 86 messages in source-array order. Transcript text is preserved without editorial additions.
- Actor
- Avos
- Record date
- Sep 03, 2021
- Messages
- 86
- Participants
- Avos, Victim
Preserved messages
Actor / other Victim
Select a message number for a stable citation link. Text remains selectable; hard-wrapped source lines are joined for reading, intentional blank-line paragraph breaks remain, and written URLs remain inert.
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Message 001 From Avos Actor / other Date Not recorded As you are an enterprise client of ours, we will provide you with customer support throughout the process. You may use this chat to get in contact with us.
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Message 002 From Victim Victim Date hello! you encrypted our files. I do not have any image files that are encrypted how can I upload a different file type? can you also tell me what files you take? can I see some samples and a list?
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Message 003 From Avos Actor / other Date I'll ask all that to the affiliate in question.
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Message 004 From Avos Actor / other Date Are we still connected?
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Message 005 From Victim Victim Date can you increase our clock? as long as we are discussing. The clock will run out on the weekend and even if we agree, we cannot do anything on weekend because all bank are closed. this is a long weekend labor day in both usa and canada so no banks until tuesday next week. appreciate you working with us to reach agreement.
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Message 006 From Victim Victim Date the site seems to disconnect me
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Message 007 From Avos Actor / other Date Disconnect you how? Yeah, I'll set your deadline on Friday next week.
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Message 008 From Victim Victim Date I tried to enter another message and it did not work I had to reload the whole page
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Message 009 From Avos Actor / other Date Just give it a couple seconds, the website can be slow at times
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Message 010 From Avos Actor / other Date I can't reach the affiliate responsible for the attack at the moment. I did tell him to provide you with a sample or list of the files exfiltrated. They'll reply here when they're back.
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Message 011 From Victim Victim Date ok friend I will come back tomorrow very late here too
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Message 012 From Victim Victim Date please update the time because no way we can hit the deadline thank you
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Message 013 From Avos Actor / other Date Sure, good night.
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Message 014 From Avos Actor / other Date Yeah don't worry about that, your new deadline's set at Friday next week
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Message 015 From Victim Victim Date appreciated. I will remain connected but may not reply.
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Message 016 From Avos Actor / other Date I can't contact the affiliate in question. They seem to be unavailable at the time. I won't be able to provide you information on the data taken.
I, however, can provide you the decryption keys if you do pay for it.
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Message 017 From Victim Victim Date Hi I tried to upload an image and I am not seeing success in decryption.
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Message 018 From Victim Victim Date I cannot find image and less than 1mb to test decrypt. what to do?
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Message 019 From Avos Actor / other Date Are the extensions appended to the encrypted files ".avos2"?
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Message 020 From Victim Victim Date yes
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Message 021 From Victim Victim Date actually the file is only 111kb
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Message 022 From Victim Victim Date is there email I can send it to?
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Message 023 From Avos Actor / other Date Avos2 came out recently and we can't provide test decryptions on our website for it at the moment.
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Message 024 From Victim Victim Date ok so what do we do here? you cannot contact affiliate, you cannot decrypt the files. What are we doing?
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Message 025 From Avos Actor / other Date You can create an archive with couple files and upload them to https://share.riseup.net.
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Message 026 From Victim Victim Date ok please wait
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Message 027 From Avos Actor / other Date Then I can manually decrypt the files for you. We can decrypt.avos2, however the website can't at the moment.
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Message 028 From Avos Actor / other Date This is because both the encryption/decryption are first built and tested in Windows, THEN this encryption algorithm is ported to our web services.
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Message 029 From Victim Victim Date https://share.riseup.net./[redacted]
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Message 030 From Victim Victim Date can you confirm it works?
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Message 031 From Avos Actor / other Date You are supposed to copy the URL in your browser instead of copying the link from the download button.
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Message 032 From Avos Actor / other Date Hello? The link doesn't work
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Message 033 From Victim Victim Date ok
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Message 034 From Victim Victim Date did you find the affiliate?
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Message 035 From Victim Victim Date https://share.riseup.net./#[redacted]
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Message 036 From Avos Actor / other Date Your link doesn't work, again.
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Message 037 From Avos Actor / other Date Please test and verify that it works BEFORE sending it to me.
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Message 038 From Avos Actor / other Date https://anonfiles.com/
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Message 039 From Victim Victim Date https://gofile.io/d/[redacted]
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Message 040 From Avos Actor / other Date Please upload it to one of the websites I've told you to. We can't download from Gofile.
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Message 041 From Victim Victim Date https://anonfiles.com/[redacted]/AVOSLOCKER_-_Sep2021_7z
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Message 042 From Avos Actor / other Date We've downloaded the data. Please allow us some time to process it
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Message 043 From Avos Actor / other Date I decrypted the PNG files. https://share.riseup.net/#[redacted]
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Message 044 From Avos Actor / other Date Hello. We think it's time to finalize your negotiations. Please let us know how do you wish to proceed with payment.
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Message 045 From Victim Victim Date I would like to see what files you took
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Message 046 From Avos Actor / other Date You can see the files in few days if we have to publish samples on the blog. We will not provide anything else at this stage.
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Message 047 From Victim Victim Date well, if you prefer to simply be aggressive we would never be able to reach a level of trust. You are asking for a lot of money, we need to assess what data you took. Show me some list or indication that I can take to management. goodwill will go a long way.
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Message 048 From Victim Victim Date if you publish we will disconnect and put the money to protect any individuals with credit monitoring. I think working together is preferred.
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Message 049 From Avos Actor / other Date As staff, we can guarantee that whatever data the affiliate has taken will be erased, and the decryption keys will be delivered.
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Message 050 From Avos Actor / other Date Your new deadline, that we both agreed on, was set on the 10th, Friday. I'll leave the rest to the affiliate.
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Message 051 From Victim Victim Date thank you Staff. But I am just the messenger. My management and board require to understand the extent of the data that was taken has this may have value that we would want to pay for you if you promise it will be erased. But we would like to get a sense of what data that is, a list would be great.
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Message 052 From Avos Actor / other Date Those are our terms and we never go against them. You know better than us what data we took. We took it from the servers we encrypted. Anyways, we are away with no access to data storage, so another scenario is not possible. Staff can help to decrypt if you reach an agreement. Data will be erased when we come back.
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Message 053 From Avos Actor / other Date I can confirm the data in question wasn't downloaded to our storage units but the affiliate's.
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Message 054 From Victim Victim Date It does not give me a good sense of comfort and I need to convey the status to my management. I cannot understand what data was taken nor where it is located. If the affiliate is the only one with the data and he does not want to prove he has data, how can we possibly establish trust when you attacked us and you refuse to work with me to demonstrate your word is trustworthy. instead not only you attack but you also just threaten. It is not a good way to establish our relationship.
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Message 055 From Avos Actor / other Date For now I'd suggest that perhaps your management should appraise the value of the decryption itself.
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Message 056 From Victim Victim Date I understand. I have met with management and we are in position to offer 50k for the decryption of the files left to decrypt. We also have an issue paying in XMR as no broker I spoke to is willing to pay XMR, the best we can do is bitcoin and would need wallet.
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Message 057 From Avos Actor / other Date Considering the affiliate wasn't able to provide a sample/list, I think we can settle at 150K in Bitcoin.
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Message 058 From Victim Victim Date Hello Staff you seem like a reasonable team. We would like to come to terms, but we are small paint distributor 150k is more than our available cash. We can increase to 75K in btc by using some credit cards.
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Message 059 From Avos Actor / other Date What about 100K?
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Message 060 From Victim Victim Date one sec let me check something with accounting
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Message 061 From Victim Victim Date I have a credit line I can increase to 85k unfortunately I cannot go any higher I am tapped on credit card and credit line at 85k
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Message 062 From Avos Actor / other Date Alright that's fair I suppose. Let us know when you have the money in BTC.
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Message 063 From Victim Victim Date I am working through a broker he said as soon as I transfer the money he can buy and send but he needs to know the address or wallet to send to?
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Message 064 From Avos Actor / other Date I'll send that to you in a bit
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Message 065 From Avos Actor / other Date [redacted]
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Message 066 From Avos Actor / other Date Do tell your guy to make a test transfer of 10$ and get a confirmation from me before he sends the full 85K
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Message 067 From Victim Victim Date OK, I will tell broker that. good idea
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Message 068 From Victim Victim Date Hello Staff, we are working with the broker to do the bitcoin payment by end of day today, UK time
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Message 069 From Victim Victim Date The broker also advise us to confirm all deal terms with you. After we pay, please confirm you will:
(1.) immediately provide working decryptor software for all our systems, (2.) provide detailed decryption process instructions and tech support if we have problems, (3.) provide detailed proof of our downloaded data - detailed file tree(s) of all data, (4.) provide confirmation of deletion of all our data - non-recoverable secure deletion with proof / shred log, (5.) confirm you will never publish any of our data, or our company name, (6.) agree to never attack us again, (7.) explain how you got into our network, and (8.) provide a security report so we can prevent future problems
Please confirm everything, all 8 items, thank you.
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Message 070 From Avos Actor / other Date I can confirm all but the 3rd, as we don't have access to your data. However I can guarantee an erasure of your data.
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Message 071 From Victim Victim Date Hello Staff, OK, thank you
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Message 072 From Victim Victim Date our broker just sent the test $10, please confirm you received it.
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Message 073 From Avos Actor / other Date Confirmed. You may continue with the transfer
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Message 074 From Victim Victim Date Ihe broker said they sent the rest. Can you please confirm and provide the decryptor as soon as possible, thank you.
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Message 075 From Avos Actor / other Date As soon as it confirms.
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Message 076 From Victim Victim Date what does that mean?
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Message 077 From Avos Actor / other Date Bitcoin takes some time to receive basically
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Message 078 From Victim Victim Date ah, ok, its a bitcoin thing. Let me know when its confirmed, thanks
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Message 079 From Avos Actor / other Date The payment confirmed. Thank you for your business. The affiliate should provide the security report.
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Message 080 From Avos Actor / other Date Defend your credentials from mimikatz Limit administrator privileges to the smallest group possible. Even if you have thousands of user accounts, you should probably only have 2-5 administrator accounts. Start with two accounts and force users to justify any additional accounts added to the administrator group. The next thing that you should do is upgrade the schema and functional level of your forest and domain to at least 2012 R2. This domain functional level adds a fairly new group called “Protected Users”. Along with other protections, the members of the Protected Users group cannot authenticate by using NTLM, Digest Authentication, or CredSSP. These changes provide powerful protections that make Mimikatz almost worthless. Verify KB2871997 has been installed to apply additional required security. After you install this security update, the default setting for non-protected users on Windows 7 and Windows 8 is to not force clear leaked logon session credentials.
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Message 081 From Avos Actor / other Date To override this default you can add the following registry dword, TokenLeakDetectDelaySecs, and set it to a recommended value of 30 seconds. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\ Stop storing passwords in memory by changing the “UseLogonCredential” registry setting to ‘0’ instead of the default value of “1” and passwords are no longer available to Mimikatz. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SecurityProviders\WDigest Start monitoring your systems for unauthorized software and malware, which should help identify Mimikatz installation and activity. You’ll have to test these changes to see what breaks, but the idea is to implement some fairly basic changes to protect your network. In your specific case the critical vulnerabiliry contained Forti VPN, please update FortiVpn and monitor for updates and Windows updates. Inform your IT stuff to remove the posibility of storing user passwords within the network.
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Message 082 From Avos Actor / other Date Also we recommend you to use SentinelAV and dattoo backup system. Also Veeam Tapes is good,but pc with veeam should be in WORKGROUP and user should be different from main domain. Every PC should have AV. Don't let any pc without AV. Also try configure 2FA (at all network pc) when you connect to remote desktop. Use password on AV. Also tip for you: If you want chage Fortigate VPN to other. We dont reccomend you to use Sonic VPN,Pulse Secure, because its under massive hack
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Message 083 From Avos Actor / other Date And finally, update your Exchange Server, since it was the main entry point.
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Message 084 From Avos Actor / other Date As for data, we instructed an erasure and it was confirmed all your data is erased. So you are safe. Thank you for your business.
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Message 085 From Victim Victim Date OK, thank you for all of these items and confirming deletion. I gave the decryptor package to our IT and I will reach out if we have any technical issues. Thank you.
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Message 086 From Avos Actor / other Date It'd be better for your IT to reach out directly if possible if anything's to occur