Analysis
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max time kernel
16s -
max time network
126s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
17-08-2021 17:09
Static task
static1
Behavioral task
behavioral1
Sample
1 (2).exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
1 (2).exe
Resource
win10v20210410
General
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Target
1 (2).exe
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Size
79KB
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MD5
f1c260c31b9d3f9ff54a142d508ec602
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SHA1
6b25c80e8b2dca94ea6b6a95745a496ec0bcabd3
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SHA256
2466fca0e29b06c78ffa8a44193fb58c30e6bec4e54bbef8e6622349b95cce4c
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SHA512
9412a185d008ded02e2061cd4e998222071923f6260ecdcc9a3f1969ea2aa89a9493866e13450d82b8ab390ec78b24d7ba82a6e2618d11cf27d67f43a7d39d6a
Malware Config
Extracted
C:\oSPvdHTvI.README.txt
blackmatter
https://prnt.sc/1o6e5a2
https://prnt.sc/1o6ei7g
https://prnt.sc/1o6exr8
https://prnt.sc/1o6fbxu
https://prnt.sc/1o6fvkn
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/EBVCVJNCPM6A3NKJ
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 15 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
1 (2).exedescription ioc process File opened for modification C:\Users\Admin\Pictures\HideTrace.crw.oSPvdHTvI 1 (2).exe File opened for modification C:\Users\Admin\Pictures\InstallAssert.tiff 1 (2).exe File renamed C:\Users\Admin\Pictures\InstallAssert.tiff => C:\Users\Admin\Pictures\InstallAssert.tiff.oSPvdHTvI 1 (2).exe File opened for modification C:\Users\Admin\Pictures\CompressEnter.crw.oSPvdHTvI 1 (2).exe File opened for modification C:\Users\Admin\Pictures\GetBlock.raw.oSPvdHTvI 1 (2).exe File renamed C:\Users\Admin\Pictures\HideOut.raw => C:\Users\Admin\Pictures\HideOut.raw.oSPvdHTvI 1 (2).exe File renamed C:\Users\Admin\Pictures\CompressEnter.crw => C:\Users\Admin\Pictures\CompressEnter.crw.oSPvdHTvI 1 (2).exe File renamed C:\Users\Admin\Pictures\DisconnectSwitch.tif => C:\Users\Admin\Pictures\DisconnectSwitch.tif.oSPvdHTvI 1 (2).exe File opened for modification C:\Users\Admin\Pictures\InstallAssert.tiff.oSPvdHTvI 1 (2).exe File renamed C:\Users\Admin\Pictures\HideTrace.crw => C:\Users\Admin\Pictures\HideTrace.crw.oSPvdHTvI 1 (2).exe File renamed C:\Users\Admin\Pictures\MoveUpdate.crw => C:\Users\Admin\Pictures\MoveUpdate.crw.oSPvdHTvI 1 (2).exe File opened for modification C:\Users\Admin\Pictures\MoveUpdate.crw.oSPvdHTvI 1 (2).exe File opened for modification C:\Users\Admin\Pictures\DisconnectSwitch.tif.oSPvdHTvI 1 (2).exe File renamed C:\Users\Admin\Pictures\GetBlock.raw => C:\Users\Admin\Pictures\GetBlock.raw.oSPvdHTvI 1 (2).exe File opened for modification C:\Users\Admin\Pictures\HideOut.raw.oSPvdHTvI 1 (2).exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
1 (2).exedescription ioc process File opened (read-only) \??\Z: 1 (2).exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
1 (2).exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\oSPvdHTvI.bmp" 1 (2).exe Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\oSPvdHTvI.bmp" 1 (2).exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
Processes:
1 (2).exepid process 3904 1 (2).exe 3904 1 (2).exe 3904 1 (2).exe 3904 1 (2).exe 3904 1 (2).exe 3904 1 (2).exe -
Modifies Control Panel 3 IoCs
Processes:
1 (2).exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\International 1 (2).exe Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop 1 (2).exe Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\WallpaperStyle = "10" 1 (2).exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
1 (2).exepid process 3904 1 (2).exe 3904 1 (2).exe 3904 1 (2).exe 3904 1 (2).exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
1 (2).exevssvc.exedescription pid process Token: SeBackupPrivilege 3904 1 (2).exe Token: SeDebugPrivilege 3904 1 (2).exe Token: 36 3904 1 (2).exe Token: SeImpersonatePrivilege 3904 1 (2).exe Token: SeIncBasePriorityPrivilege 3904 1 (2).exe Token: SeIncreaseQuotaPrivilege 3904 1 (2).exe Token: 33 3904 1 (2).exe Token: SeManageVolumePrivilege 3904 1 (2).exe Token: SeProfSingleProcessPrivilege 3904 1 (2).exe Token: SeRestorePrivilege 3904 1 (2).exe Token: SeSecurityPrivilege 3904 1 (2).exe Token: SeSystemProfilePrivilege 3904 1 (2).exe Token: SeTakeOwnershipPrivilege 3904 1 (2).exe Token: SeShutdownPrivilege 3904 1 (2).exe Token: SeBackupPrivilege 2408 vssvc.exe Token: SeRestorePrivilege 2408 vssvc.exe Token: SeAuditPrivilege 2408 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1 (2).exe"C:\Users\Admin\AppData\Local\Temp\1 (2).exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken