babuk | ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847

General

Target

ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
Size

75KB
MD5

03f524377f461bfa70859fb5805b5a03
SHA1

e8ead4332cded71755e478922d09d01975f9119f
SHA256

ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847
SHA512

ed45d0605829c76e05895e1f4aa72c6f15d20a2cea97533323cffe1b89e640bc703314a4c3d510dec8a7c183c78c30c9c9d2a2a1fe064018c5017eb6cc990da0

Score

10^/10

babuk ransomware

Malware Config

Extracted

Path

C:\How To Restore Your Files.txt

Ransom Note

############## [ babyk ransomware ] ############## * What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted from your network and copied. We use strong encryption algorithms, so you cannot decrypt your data without us. But you can restore everything by purchasing a special program from us - a universal decoder. This program will restore your entire network. Follow our instructions below and you will recover all your data. If you continue to ignore this for a long time, we will start reporting the hack to mainstream media and posting your data to the dark web. * What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. * How to contact us? ---------------------------------------------- 1) Download for browser: https://www.torproject.org/download/ 2) Open it 3) Follow this link in tor browser: http://babukq4e2p4wu4iq.onion/login.php?id=qrkurJuYkvPsMF4sX5avnaBrUHldGe

URLs

http://babukq4e2p4wu4iq.onion/login.php?id=qrkurJuYkvPsMF4sX5avnaBrUHldGe

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 18 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\ClearMeasure.tiff	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\CompressCheckpoint.tiff => C:\Users\Admin\Pictures\CompressCheckpoint.tiff.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\EnterRead.png => C:\Users\Admin\Pictures\EnterRead.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\ClearMeasure.tiff => C:\Users\Admin\Pictures\ClearMeasure.tiff.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\ClearMeasure.tiff.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\EnterRead.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\PublishPush.png => C:\Users\Admin\Pictures\PublishPush.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\PublishPush.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\SaveUnblock.tif => C:\Users\Admin\Pictures\SaveUnblock.tif.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\SaveUnblock.tif.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\CompressCheckpoint.tiff	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\CompressCheckpoint.tiff.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\SkipGet.crw => C:\Users\Admin\Pictures\SkipGet.crw.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\ReceiveConvert.png => C:\Users\Admin\Pictures\ReceiveConvert.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\ReceiveConvert.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File renamed	C:\Users\Admin\Pictures\ShowLimit.png => C:\Users\Admin\Pictures\ShowLimit.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\ShowLimit.png.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened for modification	C:\Users\Admin\Pictures\SkipGet.crw.babyk	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.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:

ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe

description	ioc	process
File opened (read-only)	\??\W:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\T:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\Y:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\U:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\J:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\S:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\K:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\Z:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\V:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\E:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\R:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\O:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\F:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\X:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\N:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\L:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\B:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\Q:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\I:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\P:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\A:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\G:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\H:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
File opened (read-only)	\??\M:	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.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

4164 vssadmin.exe
1100 vssadmin.exe

pid	process
4164	vssadmin.exe
1100	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe

pid	process
4796	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
4796	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 4160 vssvc.exe
Token: SeRestorePrivilege 4160 vssvc.exe
Token: SeAuditPrivilege 4160 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	4160	vssvc.exe
Token: SeRestorePrivilege	4160	vssvc.exe
Token: SeAuditPrivilege	4160	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.execmd.execmd.exe

description	pid	process	target process
PID 4796 wrote to memory of 3892	4796	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe	cmd.exe
PID 4796 wrote to memory of 3892	4796	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe	cmd.exe
PID 3892 wrote to memory of 4164	3892	cmd.exe	vssadmin.exe
PID 3892 wrote to memory of 4164	3892	cmd.exe	vssadmin.exe
PID 4796 wrote to memory of 1524	4796	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe	cmd.exe
PID 4796 wrote to memory of 1524	4796	ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe	cmd.exe
PID 1524 wrote to memory of 1100	1524	cmd.exe	vssadmin.exe
PID 1524 wrote to memory of 1100	1524	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe
"C:\Users\Admin\AppData\Local\Temp\ab4eae618bb05b4fb4a8d3790a0d18a3e1566ab477519991cb161398803a8847.sample.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3892
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4164
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1100