Analysis
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max time kernel
121s -
max time network
127s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
23-11-2021 18:16
Static task
static1
Behavioral task
behavioral1
Sample
706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe
Resource
win10-en-20211014
General
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Target
706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe
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Size
79KB
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MD5
62a1b4d4b461f4eaae91c70727f71604
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SHA1
1ced9a7e62aa65faa03eb1ad2bc786e9d9b5f6c2
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SHA256
706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d
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SHA512
d14f989f5f54663c3ea63526a000e8db5d172046e37f412ed47cd31eb14db071b515b854bbb3ab3d2f41f936b6962583aaa0b3ef1236aa2506148813f66ad542
Malware Config
Extracted
C:\WRLMMTHME.README.txt
blackmatter
http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/72oJjilhMD/6d067a8741848166fa2ac1e69472280c
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/X3452I2VDTHM30QX
Signatures
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BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
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suricata: ET MALWARE BlackMatter CnC Activity
suricata: ET MALWARE BlackMatter CnC Activity
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suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)
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suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)
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Modifies extensions of user files 15 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\MoveTrace.tif.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File opened for modification C:\Users\Admin\Pictures\SetClear.png.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File renamed C:\Users\Admin\Pictures\MoveTrace.tif => C:\Users\Admin\Pictures\MoveTrace.tif.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File opened for modification C:\Users\Admin\Pictures\ExportConvert.tiff 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File opened for modification C:\Users\Admin\Pictures\InitializeOut.png.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File renamed C:\Users\Admin\Pictures\ResizeTrace.raw => C:\Users\Admin\Pictures\ResizeTrace.raw.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File opened for modification C:\Users\Admin\Pictures\ResizeTrace.raw.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File opened for modification C:\Users\Admin\Pictures\ExportConvert.tiff.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File renamed C:\Users\Admin\Pictures\InitializeOut.png => C:\Users\Admin\Pictures\InitializeOut.png.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File opened for modification C:\Users\Admin\Pictures\RevokeCompare.raw.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File renamed C:\Users\Admin\Pictures\SetClear.png => C:\Users\Admin\Pictures\SetClear.png.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File renamed C:\Users\Admin\Pictures\WaitFormat.raw => C:\Users\Admin\Pictures\WaitFormat.raw.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File opened for modification C:\Users\Admin\Pictures\WaitFormat.raw.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File renamed C:\Users\Admin\Pictures\ExportConvert.tiff => C:\Users\Admin\Pictures\ExportConvert.tiff.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe File renamed C:\Users\Admin\Pictures\RevokeCompare.raw => C:\Users\Admin\Pictures\RevokeCompare.raw.WRLMMTHME 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\Z: 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\WRLMMTHME.bmp" 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\WRLMMTHME.bmp" 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe -
Modifies Control Panel 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\International 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\WallpaperStyle = "10" 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeDebugPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: 36 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeImpersonatePrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeIncBasePriorityPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeIncreaseQuotaPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: 33 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeManageVolumePrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeProfSingleProcessPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeRestorePrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeSecurityPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeSystemProfilePrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeTakeOwnershipPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeShutdownPrivilege 2740 706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe Token: SeBackupPrivilege 2808 vssvc.exe Token: SeRestorePrivilege 2808 vssvc.exe Token: SeAuditPrivilege 2808 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.exe"C:\Users\Admin\AppData\Local\Temp\706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d.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
PID:2740
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2808