babuk | 1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90

General

Target

babuk.exe
Size

79KB
MD5

92832ae49373b56748817cb5398ed706
SHA1

61e4505d605882b809d9c7f3dcbf163ff1678382
SHA256

1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90
SHA512

398ef0e5ffb6f914a2d1df23f12561153ef52ea28d345232cbb2daa84c43d1f1934be0c40d00b2502c2437c2733d0cdf75d24be6a8b47fc69648ad16c0bb4858

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 26 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

babuk.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\CompleteRestart.tiff => C:\Users\Admin\Pictures\CompleteRestart.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveExit.tiff	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\InstallConvertTo.raw.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\JoinDeny.crw => C:\Users\Admin\Pictures\JoinDeny.crw.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\MeasureStep.raw => C:\Users\Admin\Pictures\MeasureStep.raw.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\StopSet.tiff	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockCheckpoint.tiff	babuk.exe
File renamed	C:\Users\Admin\Pictures\ResolveExit.tiff => C:\Users\Admin\Pictures\ResolveExit.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveExit.tiff.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\StopSet.tiff => C:\Users\Admin\Pictures\StopSet.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockCheckpoint.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\WatchSet.tiff.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\BackupResolve.png => C:\Users\Admin\Pictures\BackupResolve.png.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\InstallConvertTo.raw => C:\Users\Admin\Pictures\InstallConvertTo.raw.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\JoinDeny.crw.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\PushRemove.tiff => C:\Users\Admin\Pictures\PushRemove.tiff.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\UnlockCheckpoint.tiff => C:\Users\Admin\Pictures\UnlockCheckpoint.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\StopSet.tiff.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\WatchSet.tiff => C:\Users\Admin\Pictures\WatchSet.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteRestart.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteRestart.tiff	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\BackupResolve.png.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\PushRemove.tiff	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\MeasureStep.raw.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\PushRemove.tiff.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\WatchSet.tiff	babuk.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:

babuk.exe

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

776 vssadmin.exe
1708 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

babuk.exe

pid process

1340 babuk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1988 vssvc.exe
Token: SeRestorePrivilege 1988 vssvc.exe
Token: SeAuditPrivilege 1988 vssvc.exe

pid	process
776	vssadmin.exe
1708	vssadmin.exe

pid	process
1340	babuk.exe

description	pid	process
Token: SeBackupPrivilege	1988	vssvc.exe
Token: SeRestorePrivilege	1988	vssvc.exe
Token: SeAuditPrivilege	1988	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

babuk.execmd.execmd.exe

description	pid	process	target process
PID 1340 wrote to memory of 1068	1340	babuk.exe	cmd.exe
PID 1340 wrote to memory of 1068	1340	babuk.exe	cmd.exe
PID 1340 wrote to memory of 1068	1340	babuk.exe	cmd.exe
PID 1340 wrote to memory of 1068	1340	babuk.exe	cmd.exe
PID 1068 wrote to memory of 776	1068	cmd.exe	vssadmin.exe
PID 1068 wrote to memory of 776	1068	cmd.exe	vssadmin.exe
PID 1068 wrote to memory of 776	1068	cmd.exe	vssadmin.exe
PID 1340 wrote to memory of 1980	1340	babuk.exe	cmd.exe
PID 1340 wrote to memory of 1980	1340	babuk.exe	cmd.exe
PID 1340 wrote to memory of 1980	1340	babuk.exe	cmd.exe
PID 1340 wrote to memory of 1980	1340	babuk.exe	cmd.exe
PID 1980 wrote to memory of 1708	1980	cmd.exe	vssadmin.exe
PID 1980 wrote to memory of 1708	1980	cmd.exe	vssadmin.exe
PID 1980 wrote to memory of 1708	1980	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\babuk.exe
"C:\Users\Admin\AppData\Local\Temp\babuk.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1068
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:776
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1708