babuk | 1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90

General

Target

babuk.exe
Size

79KB
MD5

92832ae49373b56748817cb5398ed706
SHA1

61e4505d605882b809d9c7f3dcbf163ff1678382
SHA256

1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90
SHA512

398ef0e5ffb6f914a2d1df23f12561153ef52ea28d345232cbb2daa84c43d1f1934be0c40d00b2502c2437c2733d0cdf75d24be6a8b47fc69648ad16c0bb4858

Score

10^/10

babuk ransomware

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 15 IoCs

Ransomware generally changes the extension on encrypted files.

Processes:

babuk.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\UnlockSubmit.png.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\HideConvert.tif => C:\Users\Admin\Pictures\HideConvert.tif.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\InstallRequest.png => C:\Users\Admin\Pictures\InstallRequest.png.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\MountDisable.crw => C:\Users\Admin\Pictures\MountDisable.crw.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\RepairTest.crw => C:\Users\Admin\Pictures\RepairTest.crw.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\InstallRequest.png.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\SubmitLimit.tiff => C:\Users\Admin\Pictures\SubmitLimit.tiff.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\UnlockSubmit.png => C:\Users\Admin\Pictures\UnlockSubmit.png.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\SuspendSkip.tif.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\HideConvert.tif.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\SubmitLimit.tiff.babyk	babuk.exe
File renamed	C:\Users\Admin\Pictures\SuspendSkip.tif => C:\Users\Admin\Pictures\SuspendSkip.tif.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\MountDisable.crw.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\RepairTest.crw.babyk	babuk.exe
File opened for modification	C:\Users\Admin\Pictures\SubmitLimit.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

Peripheral Device Discovery

System Information Discovery

Processes:

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

1536 vssadmin.exe
1032 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

babuk.exe

pid process

1252 babuk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1688 vssvc.exe
Token: SeRestorePrivilege 1688 vssvc.exe
Token: SeAuditPrivilege 1688 vssvc.exe

pid	process
1536	vssadmin.exe
1032	vssadmin.exe

pid	process
1252	babuk.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

babuk.execmd.execmd.exe

description	pid	process	target process
PID 1252 wrote to memory of 1464	1252	babuk.exe	cmd.exe
PID 1252 wrote to memory of 1464	1252	babuk.exe	cmd.exe
PID 1252 wrote to memory of 1464	1252	babuk.exe	cmd.exe
PID 1252 wrote to memory of 1464	1252	babuk.exe	cmd.exe
PID 1464 wrote to memory of 1536	1464	cmd.exe	vssadmin.exe
PID 1464 wrote to memory of 1536	1464	cmd.exe	vssadmin.exe
PID 1464 wrote to memory of 1536	1464	cmd.exe	vssadmin.exe
PID 1252 wrote to memory of 300	1252	babuk.exe	cmd.exe
PID 1252 wrote to memory of 300	1252	babuk.exe	cmd.exe
PID 1252 wrote to memory of 300	1252	babuk.exe	cmd.exe
PID 1252 wrote to memory of 300	1252	babuk.exe	cmd.exe
PID 300 wrote to memory of 1032	300	cmd.exe	vssadmin.exe
PID 300 wrote to memory of 1032	300	cmd.exe	vssadmin.exe
PID 300 wrote to memory of 1032	300	cmd.exe	vssadmin.exe

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:1464

C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:1536

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:300