Analysis
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max time kernel
144s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
17-03-2024 07:46
Behavioral task
behavioral1
Sample
d0512f2063cbd79fb0f770817cc81ab3.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
d0512f2063cbd79fb0f770817cc81ab3.exe
Resource
win10v2004-20240226-en
General
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Target
d0512f2063cbd79fb0f770817cc81ab3.exe
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Size
67KB
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MD5
d0512f2063cbd79fb0f770817cc81ab3
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SHA1
e324a2c8fae0d26b12f00ac859340f8d9945a9c1
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SHA256
7f6dd0ca03f04b64024e86a72a6d7cfab6abccc2173b85896fc4b431990a5984
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SHA512
a62cecdf8887e426332d56914dfe03780402a34896ffe7a3a932986832db7080e599db32bb2113238443750227a50de84ae36c6811993c43b7eee8b1a018d641
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SSDEEP
1536:RzICS4AT6GxdEe+TOdincJXvKv8Zg3kl/:qR7auJXSkZg3C/
Malware Config
Extracted
C:\MaiYWlrYr.README.txt
blackmatter
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/7NT6LXKC1XQHW5039BLOV
Signatures
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BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
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Renames multiple (114) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\MaiYWlrYr.bmp" d0512f2063cbd79fb0f770817cc81ab3.exe Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\MaiYWlrYr.bmp" d0512f2063cbd79fb0f770817cc81ab3.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe -
Modifies Control Panel 3 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\Desktop\WallpaperStyle = "10" d0512f2063cbd79fb0f770817cc81ab3.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International d0512f2063cbd79fb0f770817cc81ab3.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\Desktop d0512f2063cbd79fb0f770817cc81ab3.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe 2500 d0512f2063cbd79fb0f770817cc81ab3.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeDebugPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: 36 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeImpersonatePrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeIncBasePriorityPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeIncreaseQuotaPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: 33 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeManageVolumePrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeProfSingleProcessPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeRestorePrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeSecurityPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeSystemProfilePrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeTakeOwnershipPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeShutdownPrivilege 2500 d0512f2063cbd79fb0f770817cc81ab3.exe Token: SeBackupPrivilege 3804 vssvc.exe Token: SeRestorePrivilege 3804 vssvc.exe Token: SeAuditPrivilege 3804 vssvc.exe -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\d0512f2063cbd79fb0f770817cc81ab3.exe"C:\Users\Admin\AppData\Local\Temp\d0512f2063cbd79fb0f770817cc81ab3.exe"1⤵
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2500
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3804
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1348 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:81⤵PID:4848
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5f66968c47a64569e2281f65a95991be0
SHA1ef9e3e80bfbea4c3021b226cb8cd00687013b8a8
SHA2564b950c763006e7c4569df8742855cec31bf82f835bd7e2bdcb5f128db34c82bf
SHA512cb4ace1b3e891ab100b3950c6bc133b216e91c8978a3af1ffd75617b606bb7ceb0133f44d37a30a827655e5b84b016d736a732f5f37635bb727e1a5b722cad24