babuk | 245e191bfe998ad9ef2d6b169af22f3c290e9950234f8ddd0f4a03cb3eebf761

General

Target

a499f810c2e52fe9f8adcd5817b2d985.exe
Size

79KB
MD5

a499f810c2e52fe9f8adcd5817b2d985
SHA1

b23523cc4d6092a90aeb4522b21f94c335864090
SHA256

245e191bfe998ad9ef2d6b169af22f3c290e9950234f8ddd0f4a03cb3eebf761
SHA512

16d277a56c8b864b0c22b28305ba442b33ca2e5e0be32d193a19887c4c9193c9e192e9e1638af4e40600508cc38c7004e3a18007f281ad1577e0c6a428a5ea5b

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 7 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

a499f810c2e52fe9f8adcd5817b2d985.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\InstallLock.png.babyk	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened for modification	C:\Users\Admin\Pictures\TestExit.tiff	a499f810c2e52fe9f8adcd5817b2d985.exe
File renamed	C:\Users\Admin\Pictures\SyncOut.raw => C:\Users\Admin\Pictures\SyncOut.raw.babyk	a499f810c2e52fe9f8adcd5817b2d985.exe
File renamed	C:\Users\Admin\Pictures\TestExit.tiff => C:\Users\Admin\Pictures\TestExit.tiff.babyk	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened for modification	C:\Users\Admin\Pictures\SyncOut.raw.babyk	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened for modification	C:\Users\Admin\Pictures\TestExit.tiff.babyk	a499f810c2e52fe9f8adcd5817b2d985.exe
File renamed	C:\Users\Admin\Pictures\InstallLock.png => C:\Users\Admin\Pictures\InstallLock.png.babyk	a499f810c2e52fe9f8adcd5817b2d985.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:

a499f810c2e52fe9f8adcd5817b2d985.exe

description	ioc	process
File opened (read-only)	\??\U:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\O:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\A:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\F:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\H:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\K:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\N:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\W:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\R:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\I:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\M:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\E:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\T:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\Y:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\X:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\Q:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\P:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\S:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\G:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\J:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\L:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\Z:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\V:	a499f810c2e52fe9f8adcd5817b2d985.exe
File opened (read-only)	\??\B:	a499f810c2e52fe9f8adcd5817b2d985.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

1012 vssadmin.exe
824 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a499f810c2e52fe9f8adcd5817b2d985.exe

pid process

2792 a499f810c2e52fe9f8adcd5817b2d985.exe
2792 a499f810c2e52fe9f8adcd5817b2d985.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2968 vssvc.exe
Token: SeRestorePrivilege 2968 vssvc.exe
Token: SeAuditPrivilege 2968 vssvc.exe

pid	process
1012	vssadmin.exe
824	vssadmin.exe

pid	process
2792	a499f810c2e52fe9f8adcd5817b2d985.exe
2792	a499f810c2e52fe9f8adcd5817b2d985.exe

description	pid	process
Token: SeBackupPrivilege	2968	vssvc.exe
Token: SeRestorePrivilege	2968	vssvc.exe
Token: SeAuditPrivilege	2968	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

a499f810c2e52fe9f8adcd5817b2d985.execmd.execmd.exe

description	pid	process	target process
PID 2792 wrote to memory of 2796	2792	a499f810c2e52fe9f8adcd5817b2d985.exe	cmd.exe
PID 2792 wrote to memory of 2796	2792	a499f810c2e52fe9f8adcd5817b2d985.exe	cmd.exe
PID 2796 wrote to memory of 1012	2796	cmd.exe	vssadmin.exe
PID 2796 wrote to memory of 1012	2796	cmd.exe	vssadmin.exe
PID 2792 wrote to memory of 408	2792	a499f810c2e52fe9f8adcd5817b2d985.exe	cmd.exe
PID 2792 wrote to memory of 408	2792	a499f810c2e52fe9f8adcd5817b2d985.exe	cmd.exe
PID 408 wrote to memory of 824	408	cmd.exe	vssadmin.exe
PID 408 wrote to memory of 824	408	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe
"C:\Users\Admin\AppData\Local\Temp\a499f810c2e52fe9f8adcd5817b2d985.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1012
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:408
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:824