Analysis
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max time kernel
91s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
08-02-2023 09:11
Behavioral task
behavioral1
Sample
BlackMatter.7a223a0aa0f88e84a68da.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
BlackMatter.7a223a0aa0f88e84a68da.exe
Resource
win10v2004-20221111-en
General
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Target
BlackMatter.7a223a0aa0f88e84a68da.exe
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Size
95KB
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MD5
930b9c1792a539acdb051af34de91060
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SHA1
2cda394db71fc67905e31d9e8f4b88ef85a248dc
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SHA256
7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296
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SHA512
9bd26a83d30f69ab7d9dfbe9c3b81c8fd2381f331ce139140646932cf09b461f177c4eb236cd2194d190c50598ac3de0023cfe38e843b08bbe2f120e790ee3f1
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SSDEEP
1536:SUICS4ADkFAztzRyxoWtBErqylVxn1GZnKoEcXb/50Qtef0:sBkwtdyxoUH4BYnKobfw
Malware Config
Extracted
\??\Z:\AU8hl5chT.README.txt
blackmatter
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/QLA44XK2K4K1RZL9
Signatures
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BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
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Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exedescription ioc process File renamed C:\Users\Admin\Pictures\ResetGet.png => C:\Users\Admin\Pictures\ResetGet.png.AU8hl5chT BlackMatter.7a223a0aa0f88e84a68da.exe File opened for modification C:\Users\Admin\Pictures\ResetGet.png.AU8hl5chT BlackMatter.7a223a0aa0f88e84a68da.exe File renamed C:\Users\Admin\Pictures\StopCompare.png => C:\Users\Admin\Pictures\StopCompare.png.AU8hl5chT BlackMatter.7a223a0aa0f88e84a68da.exe File opened for modification C:\Users\Admin\Pictures\StopCompare.png.AU8hl5chT BlackMatter.7a223a0aa0f88e84a68da.exe File opened for modification C:\Users\Admin\Pictures\RedoSwitch.tiff BlackMatter.7a223a0aa0f88e84a68da.exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exedescription ioc process File opened (read-only) \??\Z: BlackMatter.7a223a0aa0f88e84a68da.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\AU8hl5chT.bmp" BlackMatter.7a223a0aa0f88e84a68da.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\AU8hl5chT.bmp" BlackMatter.7a223a0aa0f88e84a68da.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exepid process 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe -
Modifies Control Panel 2 IoCs
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\Desktop BlackMatter.7a223a0aa0f88e84a68da.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\Desktop\WallpaperStyle = "10" BlackMatter.7a223a0aa0f88e84a68da.exe -
Modifies registry class 5 IoCs
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AU8hl5chT\DefaultIcon\ = "C:\\ProgramData\\AU8hl5chT.ico" BlackMatter.7a223a0aa0f88e84a68da.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.AU8hl5chT BlackMatter.7a223a0aa0f88e84a68da.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.AU8hl5chT\ = "AU8hl5chT" BlackMatter.7a223a0aa0f88e84a68da.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AU8hl5chT\DefaultIcon BlackMatter.7a223a0aa0f88e84a68da.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AU8hl5chT BlackMatter.7a223a0aa0f88e84a68da.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exepid process 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe 2672 BlackMatter.7a223a0aa0f88e84a68da.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
BlackMatter.7a223a0aa0f88e84a68da.exevssvc.exedescription pid process Token: SeBackupPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeDebugPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: 36 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeImpersonatePrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeIncBasePriorityPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeIncreaseQuotaPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: 33 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeManageVolumePrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeProfSingleProcessPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeRestorePrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeSecurityPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeSystemProfilePrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeTakeOwnershipPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeShutdownPrivilege 2672 BlackMatter.7a223a0aa0f88e84a68da.exe Token: SeBackupPrivilege 1148 vssvc.exe Token: SeRestorePrivilege 1148 vssvc.exe Token: SeAuditPrivilege 1148 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\BlackMatter.7a223a0aa0f88e84a68da.exe"C:\Users\Admin\AppData\Local\Temp\BlackMatter.7a223a0aa0f88e84a68da.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken