babuk | 28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef

General

Target

28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
Size

79KB
MD5

8e18c2da2c202697eb9552c07db3be1c
SHA1

93d20b75e18dd53ed16215262f43c1074e55f025
SHA256

28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef
SHA512

d4c1ce9099ed49532df9c67e67180adc69727269521c457e714352f2ad6f4eb74a0868d7218632e95bdd69dd4e8e28bb8870e99ffbee95cef5e7a6b9bf371c08
SSDEEP

1536:+6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:ohZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

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 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\BackupRead.tiff => C:\Users\Admin\Pictures\BackupRead.tiff.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File renamed	C:\Users\Admin\Pictures\FindStop.tif => C:\Users\Admin\Pictures\FindStop.tif.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File renamed	C:\Users\Admin\Pictures\SubmitRemove.tif => C:\Users\Admin\Pictures\SubmitRemove.tif.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened for modification	C:\Users\Admin\Pictures\BackupRead.tiff	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened for modification	C:\Users\Admin\Pictures\BackupRead.tiff.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened for modification	C:\Users\Admin\Pictures\FindStop.tif.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File renamed	C:\Users\Admin\Pictures\ResolveConvert.png => C:\Users\Admin\Pictures\ResolveConvert.png.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveConvert.png.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened for modification	C:\Users\Admin\Pictures\SubmitRemove.tif.babyk	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.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:

28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.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:

28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe

description	ioc	process
File opened (read-only)	\??\Y:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\G:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\L:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\H:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\Z:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\X:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\O:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\P:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\S:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\K:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\V:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\B:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\Q:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\R:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\U:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\I:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\A:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\F:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\J:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\N:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\W:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\E:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\T:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
File opened (read-only)	\??\M:	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.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

5020 vssadmin.exe
628 vssadmin.exe

pid	process
5020	vssadmin.exe
628	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe

pid	process
2180	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
2180	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 4960 vssvc.exe
Token: SeRestorePrivilege 4960 vssvc.exe
Token: SeAuditPrivilege 4960 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	4960	vssvc.exe
Token: SeRestorePrivilege	4960	vssvc.exe
Token: SeAuditPrivilege	4960	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.execmd.execmd.exe

description	pid	process	target process
PID 2180 wrote to memory of 2276	2180	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe	cmd.exe
PID 2180 wrote to memory of 2276	2180	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe	cmd.exe
PID 2276 wrote to memory of 5020	2276	cmd.exe	vssadmin.exe
PID 2276 wrote to memory of 5020	2276	cmd.exe	vssadmin.exe
PID 2180 wrote to memory of 2164	2180	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe	cmd.exe
PID 2180 wrote to memory of 2164	2180	28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe	cmd.exe
PID 2164 wrote to memory of 628	2164	cmd.exe	vssadmin.exe
PID 2164 wrote to memory of 628	2164	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe
"C:\Users\Admin\AppData\Local\Temp\28f8999808e15f40854a30e88a6562fb2833bbe80f50f6290f06ff36e97f2fef.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2276
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:5020
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:628