Analysis
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max time kernel
75s -
max time network
35s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
21-09-2021 13:19
Static task
static1
Behavioral task
behavioral1
Sample
4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe
Resource
win10v20210408
General
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Target
4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe
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Size
78KB
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MD5
62a70f74d6ac64829a8a31e306e9d41d
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SHA1
ec26b38a29549272cc5f0cf548e208030ff114b0
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SHA256
4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b
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SHA512
0bd94273735921ca43b2c12e1e9c1aba158c2f825621d1a3daa8bafecf652ea35f68bc12a748fe583429b698dc51ce4f39194129daf5521996d2d9faceb3a372
Malware Config
Extracted
C:\chkvc3MvG.README.txt
blackmatter
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/LH2WLI60XU9O283RYADWV
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 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\MergeRename.tiff.chkvc3MvG 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe File renamed C:\Users\Admin\Pictures\SubmitTrace.tif => C:\Users\Admin\Pictures\SubmitTrace.tif.chkvc3MvG 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\SubmitTrace.tif.chkvc3MvG 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe File renamed C:\Users\Admin\Pictures\ConnectSplit.raw => C:\Users\Admin\Pictures\ConnectSplit.raw.chkvc3MvG 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\ConnectSplit.raw.chkvc3MvG 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe File opened for modification C:\Users\Admin\Pictures\MergeRename.tiff 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe File renamed C:\Users\Admin\Pictures\MergeRename.tiff => C:\Users\Admin\Pictures\MergeRename.tiff.chkvc3MvG 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\chkvc3MvG.bmp" 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\chkvc3MvG.bmp" 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe -
Modifies Control Panel 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\International 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\WallpaperStyle = "10" 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeDebugPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: 36 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeImpersonatePrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeIncBasePriorityPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeIncreaseQuotaPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: 33 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeManageVolumePrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeProfSingleProcessPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeRestorePrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeSecurityPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeSystemProfilePrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeTakeOwnershipPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeShutdownPrivilege 1424 4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe Token: SeBackupPrivilege 268 vssvc.exe Token: SeRestorePrivilege 268 vssvc.exe Token: SeAuditPrivilege 268 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe"C:\Users\Admin\AppData\Local\Temp\4be85e2083b64838fb66b92195a250228a721cdb5ae91817ea97b37aa53f4a2b.bin.sample.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1424
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:268