babuk | a20a1cd9fa52d3f6bc62b6b629df2273d1c579f0fffce69d2bc64895c692fb19

General

Target

a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
Size

79KB
MD5

65eec80b04f4b8da236e7b9f8627e5e2
SHA1

47aba918cf1ef166a9868c74003496cf419e6290
SHA256

a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06
SHA512

b5c45d833fc86e42c340b08d630218fde1f816bb36c3a5920553bddf8f2acd1b6951eb402dff5e82add7f623b76e6ee5414fbdaa293df0579776fc5cad62fbd9

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 13 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\MergeUnlock.tif.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File renamed	C:\Users\Admin\Pictures\UninstallSync.tif => C:\Users\Admin\Pictures\UninstallSync.tif.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened for modification	C:\Users\Admin\Pictures\UninstallSync.tif.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File renamed	C:\Users\Admin\Pictures\DisconnectCheckpoint.crw => C:\Users\Admin\Pictures\DisconnectCheckpoint.crw.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened for modification	C:\Users\Admin\Pictures\DisconnectCheckpoint.crw.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File renamed	C:\Users\Admin\Pictures\MergeProtect.tif => C:\Users\Admin\Pictures\MergeProtect.tif.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened for modification	C:\Users\Admin\Pictures\MergeProtect.tif.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File renamed	C:\Users\Admin\Pictures\MergeUnlock.tif => C:\Users\Admin\Pictures\MergeUnlock.tif.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened for modification	C:\Users\Admin\Pictures\PingGrant.tiff	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File renamed	C:\Users\Admin\Pictures\PingGrant.tiff => C:\Users\Admin\Pictures\PingGrant.tiff.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened for modification	C:\Users\Admin\Pictures\PingGrant.tiff.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File renamed	C:\Users\Admin\Pictures\InvokeConnect.png => C:\Users\Admin\Pictures\InvokeConnect.png.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened for modification	C:\Users\Admin\Pictures\InvokeConnect.png.babyk	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.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:

a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe

description	ioc	process
File opened (read-only)	\??\F:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\Z:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\X:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\Q:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\O:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\P:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\A:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\S:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\V:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\B:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\T:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\I:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\L:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\N:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\M:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\W:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\E:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\H:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\J:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\K:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\R:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\Y:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\U:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
File opened (read-only)	\??\G:	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.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

3868 vssadmin.exe
2288 vssadmin.exe

pid	process
3868	vssadmin.exe
2288	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe

pid	process
4016	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
4016	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2300 vssvc.exe
Token: SeRestorePrivilege 2300 vssvc.exe
Token: SeAuditPrivilege 2300 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	2300	vssvc.exe
Token: SeRestorePrivilege	2300	vssvc.exe
Token: SeAuditPrivilege	2300	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.execmd.execmd.exe

description	pid	process	target process
PID 4016 wrote to memory of 1716	4016	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe	cmd.exe
PID 4016 wrote to memory of 1716	4016	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe	cmd.exe
PID 1716 wrote to memory of 3868	1716	cmd.exe	vssadmin.exe
PID 1716 wrote to memory of 3868	1716	cmd.exe	vssadmin.exe
PID 4016 wrote to memory of 4076	4016	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe	cmd.exe
PID 4016 wrote to memory of 4076	4016	a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe	cmd.exe
PID 4076 wrote to memory of 2288	4076	cmd.exe	vssadmin.exe
PID 4076 wrote to memory of 2288	4076	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe
"C:\Users\Admin\AppData\Local\Temp\a9fb354944ee5879b6e13381952889c604d850fe18ef552185a1c228b3bb3d06.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4016

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:1716

C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:3868

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:4076