Analysis
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max time kernel
146s -
max time network
118s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
06-09-2021 17:56
Static task
static1
Behavioral task
behavioral1
Sample
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe
Resource
win10v20210408
General
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Target
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe
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Size
79KB
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MD5
18c7c940bc6a4e778fbdf4a3e28151a8
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SHA1
f3589918d71b87c7e764479b79c4a7b485cb746a
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SHA256
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2
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SHA512
6e808fe882640a517c2054fdece73059c7ea3e27a946e55f41b91fd0f757dcd8c76be8f381f60f3e45449edebaa4f620b903337727607f7768543b1acec40d18
Malware Config
Extracted
\??\Z:\UCzUExPUL.README.txt
blackmatter
http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/YdWh7oMKjT/13f1a8efc53e2fa712813f4c39147a79
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/5AZHJFLKJNPOJ4F5O5T
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 24 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exedescription ioc process File renamed C:\Users\Admin\Pictures\SendRename.tiff => C:\Users\Admin\Pictures\SendRename.tiff.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\SplitRead.raw => C:\Users\Admin\Pictures\SplitRead.raw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\SplitRead.raw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\SyncExport.tiff.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\UpdateRegister.png.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\ImportSubmit.crw => C:\Users\Admin\Pictures\ImportSubmit.crw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\InitializeConvert.tif => C:\Users\Admin\Pictures\InitializeConvert.tif.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\SendRename.tiff.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\ApproveWait.crw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\CopyRemove.tif => C:\Users\Admin\Pictures\CopyRemove.tif.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\InitializeConvert.tif.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\InstallSearch.png => C:\Users\Admin\Pictures\InstallSearch.png.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\InstallSearch.png.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\LockHide.crw => C:\Users\Admin\Pictures\LockHide.crw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\SyncExport.tiff 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\CopyRemove.tif.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\ImportSubmit.crw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\DisableMove.tif.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\LockHide.crw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File opened for modification C:\Users\Admin\Pictures\SendRename.tiff 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\SyncExport.tiff => C:\Users\Admin\Pictures\SyncExport.tiff.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\UpdateRegister.png => C:\Users\Admin\Pictures\UpdateRegister.png.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\ApproveWait.crw => C:\Users\Admin\Pictures\ApproveWait.crw.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe File renamed C:\Users\Admin\Pictures\DisableMove.tif => C:\Users\Admin\Pictures\DisableMove.tif.UCzUExPUL 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exedescription ioc process File opened (read-only) \??\Z: 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\UCzUExPUL.bmp" 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\UCzUExPUL.bmp" 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
Processes:
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exepid process 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe -
Modifies Control Panel 3 IoCs
Processes:
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\WallpaperStyle = "10" 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 2312 NOTEPAD.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exepid process 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exevssvc.exedescription pid process Token: SeBackupPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeDebugPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: 36 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeImpersonatePrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeIncBasePriorityPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeIncreaseQuotaPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: 33 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeManageVolumePrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeProfSingleProcessPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeRestorePrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeSecurityPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeSystemProfilePrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeTakeOwnershipPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeShutdownPrivilege 568 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe Token: SeBackupPrivilege 704 vssvc.exe Token: SeRestorePrivilege 704 vssvc.exe Token: SeAuditPrivilege 704 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.exe"C:\Users\Admin\AppData\Local\Temp\2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2.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
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\UCzUExPUL.README.txt1⤵
- Opens file in notepad (likely ransom note)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\Desktop\UCzUExPUL.README.txtMD5
b7f54f12f8d46188c98172cf6c39f91e
SHA173f9572f52d54b2cffb8e4464f28453bc3d192b9
SHA256dedefcd61e8ed1e5a7c8a9469aad4605042ce2eb69c2b20cf6e1ed9b8a14f56d
SHA5122f0f138db798902990fb4c4cd4f05c66f656a7aef5aa186bad17a39683973c98da392b5207d9ba654a6e2774d920bbf2afea996513e91d159cb87961548374d5
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memory/568-114-0x0000000002EF3000-0x0000000002EF5000-memory.dmpFilesize
8KB
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memory/568-115-0x0000000002EF0000-0x0000000002EF1000-memory.dmpFilesize
4KB