babuk | ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df

General

Target

ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
Size

79KB
MD5

632346fc6c6d13b004b01b450acbdb14
SHA1

34813d5c989d456777158ea98ee8b68eaf6c7117
SHA256

ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df
SHA512

250eaffcadb6f66dcad974657a2cc2f7c8f0e306fb58a16c9bb8b0c79347d984dee7881e01fd2139512d760f2decd5acf32817ec5f62decf44f660e6431e5599
SSDEEP

1536:V6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:BhZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

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 16 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\ExitUnblock.tif.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\PushOpen.tiff.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\ShowSuspend.raw.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\UndoProtect.tiff	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File renamed	C:\Users\Admin\Pictures\CheckpointInstall.crw => C:\Users\Admin\Pictures\CheckpointInstall.crw.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\PushOpen.tiff	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File renamed	C:\Users\Admin\Pictures\PushOpen.tiff => C:\Users\Admin\Pictures\PushOpen.tiff.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File renamed	C:\Users\Admin\Pictures\SwitchRename.tif => C:\Users\Admin\Pictures\SwitchRename.tif.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\SwitchRename.tif.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\CheckpointInstall.crw.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File renamed	C:\Users\Admin\Pictures\ExitUnblock.tif => C:\Users\Admin\Pictures\ExitUnblock.tif.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File renamed	C:\Users\Admin\Pictures\ShowSuspend.raw => C:\Users\Admin\Pictures\ShowSuspend.raw.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File renamed	C:\Users\Admin\Pictures\UnlockPush.png => C:\Users\Admin\Pictures\UnlockPush.png.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File renamed	C:\Users\Admin\Pictures\UndoProtect.tiff => C:\Users\Admin\Pictures\UndoProtect.tiff.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\UndoProtect.tiff.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockPush.png.babyk	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.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

Processes:

ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.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

Processes:

ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe

description	ioc	process
File opened (read-only)	\??\A:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\F:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\M:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\E:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\T:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\J:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\K:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\L:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\B:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\Q:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\R:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\I:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\O:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\H:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\X:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\W:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\U:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\S:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\G:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\Z:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\V:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\N:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\Y:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
File opened (read-only)	\??\P:	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.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

Processes:

vssadmin.exevssadmin.exe

pid process

4892 vssadmin.exe
228 vssadmin.exe

pid	process
4892	vssadmin.exe
228	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe

pid	process
4528	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
4528	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1208 vssvc.exe
Token: SeRestorePrivilege 1208 vssvc.exe
Token: SeAuditPrivilege 1208 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	1208	vssvc.exe
Token: SeRestorePrivilege	1208	vssvc.exe
Token: SeAuditPrivilege	1208	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.execmd.execmd.exe

description	pid	process	target process
PID 4528 wrote to memory of 4984	4528	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe	cmd.exe
PID 4528 wrote to memory of 4984	4528	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe	cmd.exe
PID 4984 wrote to memory of 4892	4984	cmd.exe	vssadmin.exe
PID 4984 wrote to memory of 4892	4984	cmd.exe	vssadmin.exe
PID 4528 wrote to memory of 3476	4528	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe	cmd.exe
PID 4528 wrote to memory of 3476	4528	ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe	cmd.exe
PID 3476 wrote to memory of 228	3476	cmd.exe	vssadmin.exe
PID 3476 wrote to memory of 228	3476	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe
"C:\Users\Admin\AppData\Local\Temp\ca357f7a68a547cbc6a7728d93a9eeca6892944b85554ff625390b5609d127df.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4528
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4984
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4892
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3476
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:228