babuk | 1a8cc49359906456588745440b5378bcaeaf606b1fe52128d46aacb2658985f8

General

Target

admin-panel.exe
Size

79KB
MD5

566b19ddc6c735e6b8bd24d766b27d95
SHA1

18cf7b695f958a48fb54fe8faca8c72e9709bc40
SHA256

1a8cc49359906456588745440b5378bcaeaf606b1fe52128d46aacb2658985f8
SHA512

570f1ae1e156965dbad7f37afe05b6f5db55e716964452f73cc5f3fef81e5e90e8d55b1539ab6545462a05dbef47b9b7bf0d319eecd1414666d3ae8563fa38c6

Score

10^/10

babuk ransomware

Malware Config

Signatures

Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 17 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\StopProtect.png.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\SplitUnlock.png.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\RevokeMove.raw.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\SendUse.raw => C:\Users\Admin\Pictures\SendUse.raw.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\SendUse.raw.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\SplitUnlock.png => C:\Users\Admin\Pictures\SplitUnlock.png.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\RestoreTrace.png => C:\Users\Admin\Pictures\RestoreTrace.png.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\EnableFormat.tiff => C:\Users\Admin\Pictures\EnableFormat.tiff.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\LimitRestore.png => C:\Users\Admin\Pictures\LimitRestore.png.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\MoveTrace.tif.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\RevokeMove.raw => C:\Users\Admin\Pictures\RevokeMove.raw.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\StopProtect.png => C:\Users\Admin\Pictures\StopProtect.png.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\RestoreTrace.png.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\EnableFormat.tiff.babyk	admin-panel.exe
File renamed	C:\Users\Admin\Pictures\MoveTrace.tif => C:\Users\Admin\Pictures\MoveTrace.tif.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\LimitRestore.png.babyk	admin-panel.exe
File opened for modification	C:\Users\Admin\Pictures\EnableFormat.tiff	admin-panel.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	admin-panel.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\U:	admin-panel.exe
File opened (read-only)	\??\I:	admin-panel.exe
File opened (read-only)	\??\G:	admin-panel.exe
File opened (read-only)	\??\L:	admin-panel.exe
File opened (read-only)	\??\E:	admin-panel.exe
File opened (read-only)	\??\Y:	admin-panel.exe
File opened (read-only)	\??\J:	admin-panel.exe
File opened (read-only)	\??\V:	admin-panel.exe
File opened (read-only)	\??\B:	admin-panel.exe
File opened (read-only)	\??\Z:	admin-panel.exe
File opened (read-only)	\??\M:	admin-panel.exe
File opened (read-only)	\??\R:	admin-panel.exe
File opened (read-only)	\??\T:	admin-panel.exe
File opened (read-only)	\??\A:	admin-panel.exe
File opened (read-only)	\??\S:	admin-panel.exe
File opened (read-only)	\??\F:	admin-panel.exe
File opened (read-only)	\??\H:	admin-panel.exe
File opened (read-only)	\??\N:	admin-panel.exe
File opened (read-only)	\??\Q:	admin-panel.exe
File opened (read-only)	\??\W:	admin-panel.exe
File opened (read-only)	\??\O:	admin-panel.exe
File opened (read-only)	\??\P:	admin-panel.exe
File opened (read-only)	\??\K:	admin-panel.exe
File opened (read-only)	\??\X:	admin-panel.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 2 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
408	vssadmin.exe
212	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2136	admin-panel.exe
2136	admin-panel.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3112	vssvc.exe
Token: SeRestorePrivilege	3112	vssvc.exe
Token: SeAuditPrivilege	3112	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 4840	2136	admin-panel.exe	83
PID 2136 wrote to memory of 4840	2136	admin-panel.exe	83
PID 4840 wrote to memory of 408	4840	cmd.exe	85
PID 4840 wrote to memory of 408	4840	cmd.exe	85
PID 2136 wrote to memory of 492	2136	admin-panel.exe	89
PID 2136 wrote to memory of 492	2136	admin-panel.exe	89
PID 492 wrote to memory of 212	492	cmd.exe	91
PID 492 wrote to memory of 212	492	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\admin-panel.exe
"C:\Users\Admin\AppData\Local\Temp\admin-panel.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:408
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:492
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:212