Analysis
- max time kernel
147s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240802-en - resource tags
- submitted
09/08/2024, 06:48
General
- Target 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
- Size 729KB
- Sample240809-hkwv2a1fka
- SHA256 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1
Malware Config
Extracted
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djvu
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http://cajgtus.com/test1/get.php
-
extension
.watz
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offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/abe121434ad837dd5bdd03878a14485820240531135509/34284d Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0874PsawqS
Signatures
- Detected Djvu ransomware 17 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Modifies file permissions 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of WriteProcessMemory 26 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\8fb9118c-0d80-4744-880e-c1345540c38f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
memory/792-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/792-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/792-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/792-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/792-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4284-21-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/4284-25-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/5900-1-0x0000000002340000-0x00000000023DB000-memory.dmp
memory/5900-2-0x00000000023E0000-0x00000000024FB000-memory.dmp
memory/6032-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-40-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-41-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6032-42-0x0000000000400000-0x0000000000537000-memory.dmp