Analysis
-
max time kernel
111s -
max time network
136s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
03-11-2021 13:58
Static task
static1
Behavioral task
behavioral1
Sample
7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe
Resource
win10-en-20211014
General
-
Target
7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe
-
Size
95KB
-
MD5
930b9c1792a539acdb051af34de91060
-
SHA1
2cda394db71fc67905e31d9e8f4b88ef85a248dc
-
SHA256
7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296
-
SHA512
9bd26a83d30f69ab7d9dfbe9c3b81c8fd2381f331ce139140646932cf09b461f177c4eb236cd2194d190c50598ac3de0023cfe38e843b08bbe2f120e790ee3f1
Malware Config
Extracted
C:\WRLMMTHME.README.txt
blackmatter
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/QLA44XK2K4K1RZL9
Signatures
-
BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
-
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: 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.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" 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\WRLMMTHME.bmp" 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe -
Modifies Control Panel 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\WallpaperStyle = "10" 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WRLMMTHME\DefaultIcon 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WRLMMTHME 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WRLMMTHME\DefaultIcon\ = "C:\\ProgramData\\WRLMMTHME.ico" 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.WRLMMTHME 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.WRLMMTHME\ = "WRLMMTHME" 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeDebugPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: 36 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeImpersonatePrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeIncBasePriorityPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeIncreaseQuotaPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: 33 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeManageVolumePrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeProfSingleProcessPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeRestorePrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeSecurityPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeSystemProfilePrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeTakeOwnershipPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeShutdownPrivilege 3716 7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe Token: SeBackupPrivilege 720 vssvc.exe Token: SeRestorePrivilege 720 vssvc.exe Token: SeAuditPrivilege 720 vssvc.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe"C:\Users\Admin\AppData\Local\Temp\7a223a0aa0f88e84a68da6cde7f7f5c3bb2890049b0bf3269230d87d2b027296.exe"1⤵
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3716
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:720