Analysis
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max time kernel
81s -
max time network
152s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
21-09-2021 13:19
Static task
static1
Behavioral task
behavioral1
Sample
66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe
Resource
win10v20210408
General
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Target
66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe
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Size
78KB
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MD5
feed59d9048fdc17962b71f7550388dd
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SHA1
b24887db18de6b017687c2aca95cf1ccfa0d8ea3
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SHA256
66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f
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SHA512
4fcd03ec2e73e0ce75774c21db66184bc3eab9128cac1cae9d1487a6bb8461a5641a7c3be590291f561833c22377e2f74c09084b37fda1f4d524b2607b252284
Malware Config
Extracted
\??\Z:\UCzUExPUL.README.txt
blackmatter
http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/9BEBTCZQN6BQJ94DJXJ
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 12 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\DenyRevoke.crw => C:\Users\Admin\Pictures\DenyRevoke.crw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File renamed C:\Users\Admin\Pictures\ExportWrite.crw => C:\Users\Admin\Pictures\ExportWrite.crw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File renamed C:\Users\Admin\Pictures\RenameUse.crw => C:\Users\Admin\Pictures\RenameUse.crw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\RenameUse.crw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File renamed C:\Users\Admin\Pictures\ShowStep.tif => C:\Users\Admin\Pictures\ShowStep.tif.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\ShowStep.tif.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File renamed C:\Users\Admin\Pictures\ConvertFromStop.raw => C:\Users\Admin\Pictures\ConvertFromStop.raw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\ConvertFromStop.raw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\DenyRevoke.crw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\ExportWrite.crw.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File renamed C:\Users\Admin\Pictures\TestRestore.tif => C:\Users\Admin\Pictures\TestRestore.tif.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\TestRestore.tif.UCzUExPUL 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.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: 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\UCzUExPUL.bmp" 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\UCzUExPUL.bmp" 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe -
Modifies Control Panel 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\WallpaperStyle = "10" 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeDebugPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: 36 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeImpersonatePrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeIncBasePriorityPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeIncreaseQuotaPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: 33 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeManageVolumePrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeProfSingleProcessPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeRestorePrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeSecurityPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeSystemProfilePrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeTakeOwnershipPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeShutdownPrivilege 636 66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe Token: SeBackupPrivilege 1032 vssvc.exe Token: SeRestorePrivilege 1032 vssvc.exe Token: SeAuditPrivilege 1032 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.exe"C:\Users\Admin\AppData\Local\Temp\66e6563ecef8f33b1b283a63404a2029550af9a6574b84e0fb3f2c6a8f42e89f.bin.sample.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:636
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1032