babuk | 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e

General

Target

391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
Size

75KB
MD5

98b04a1cfdf18674315ec137733553a7
SHA1

dd1cdb8782b5e08695b006393d1e8ab4e447556e
SHA256

391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e
SHA512

3c5d9884a922b4b974c3dbd0e6f73292b7bfa761a1e50cfb1af07752261cf1a8ea2520a13f28f7040d788bff3837c62c7a6595f03b1c1be5f8d4ea9848f09cb5

Score

10^/10

babuk ransomware

Malware Config

Extracted

Path

C:\odt\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. * What information compromised? ---------------------------------------------- We copied many data from your internal network, here are some proofs (private link): http://gtmx56k4hutn3ikv.onion/blog/ff6b763849c49971c7ef8508064a3d8681529c7f45e532ff9e3d9ec13165263b/ For additional confirmations, please chat with us/ In cases of ignoring us, the information will be released to the public in blog http://gtmx56k4hutn3ikv.onion/ * 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=l6Kr29xLbfnq1f0jzES55LLmmrZPd8

URLs

http://gtmx56k4hutn3ikv.onion/blog/ff6b763849c49971c7ef8508064a3d8681529c7f45e532ff9e3d9ec13165263b/

http://gtmx56k4hutn3ikv.onion/

http://babukq4e2p4wu4iq.onion/login.php?id=l6Kr29xLbfnq1f0jzES55LLmmrZPd8

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 8 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\PingInstall.crw => C:\Users\Admin\Pictures\PingInstall.crw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened for modification	C:\Users\Admin\Pictures\PingInstall.crw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File renamed	C:\Users\Admin\Pictures\PublishUnpublish.raw => C:\Users\Admin\Pictures\PublishUnpublish.raw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened for modification	C:\Users\Admin\Pictures\PublishUnpublish.raw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File renamed	C:\Users\Admin\Pictures\UsePing.crw => C:\Users\Admin\Pictures\UsePing.crw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened for modification	C:\Users\Admin\Pictures\UsePing.crw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromClear.raw => C:\Users\Admin\Pictures\ConvertFromClear.raw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromClear.raw.babyk	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.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

description	ioc	Process
File opened (read-only)	\??\J:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\K:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\B:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\M:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\O:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\G:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\X:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\E:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\Z:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\T:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\Y:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\U:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\I:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\P:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\A:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\W:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\R:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\S:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\H:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\L:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\V:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\N:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\Q:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
File opened (read-only)	\??\F:	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.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

pid	Process
3660	vssadmin.exe
3328	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3908	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
3908	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	752	vssvc.exe
Token: SeRestorePrivilege	752	vssvc.exe
Token: SeAuditPrivilege	752	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3908 wrote to memory of 1936	3908	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe	76
PID 3908 wrote to memory of 1936	3908	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe	76
PID 3908 wrote to memory of 2760	3908	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe	78
PID 3908 wrote to memory of 2760	3908	391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe	78
PID 1936 wrote to memory of 3660	1936	cmd.exe	80
PID 1936 wrote to memory of 3660	1936	cmd.exe	80
PID 2760 wrote to memory of 3328	2760	cmd.exe	81
PID 2760 wrote to memory of 3328	2760	cmd.exe	81

C:\Users\Admin\AppData\Local\Temp\391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe
"C:\Users\Admin\AppData\Local\Temp\391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.sample.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3908
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3660
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3328