babuk | c5741701b3866459dd1ffa2477cfd8776713612912693a5897f78aac795d23e9

max time kernel
841s
max time network
852s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
07/07/2024, 14:07

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General

Target
RansomwareSamples/Babik_04_01_2021_31KB.exe
Size 30KB
Sample240707-rfgd8atekm
SHA256 8203c2f00ecd3ae960cb3247a7d7bfb35e55c38939607c85dbdb5c92f0495fa9
MD5 e10713a4a5f635767dcd54d609bed977
SHA1 320d799beef673a98481757b2ff7e3463ce67916
SHA512 fed1cb7e1798ea0d131a0d4962a2b9f6c700ee3e1c9482c7837be930ce5167196ac7b1e715d9c9a5c171c349f3df3dde1a42db8e439459bc742928f9d19b38a7
SSDEEP 768:S4DnL4DGrUVvP917yo6Xee7amb26ZghLybmGJ87tHvg7jzTzt:SILd639NdCbXZxbytH6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

babuk defense_evasion execution impact ransomware

Malware Config

Extracted

Path

\Device\HarddiskVolume1\Boot\cs-CZ\How To Restore Your Files.txt

babuk

Ransom Note

----------- [ Hello! ] -------------> ****BY BABUK LOCKER**** 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. 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? ---------------------------------------------- Using TOR Browser ( https://www.torproject.org/download/ ): http://babukq4e2p4wu4iq.onion/login.php?id=8M60J4vCbbkKgM6QnA07E9qpkn0Qk7 !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!

URLs

http://babukq4e2p4wu4iq.onion/login.php?id=8M60J4vCbbkKgM6QnA07E9qpkn0Qk7

Signatures

Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (470) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Enumerates connected drives 3 TTPs 23 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)	\??\R:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\Y:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\U:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\S:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\J:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\V:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\B:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\N:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\W:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\P:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\E:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\I:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\G:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\H:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\X:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\M:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\Q:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\T:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\O:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\A:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\K:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\L:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\Z:	Babik_04_01_2021_31KB.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Interacts with shadow copies 3 TTPs 2 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2888	vssadmin.exe
2400	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe
2196	Babik_04_01_2021_31KB.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3048	vssvc.exe
Token: SeRestorePrivilege	3048	vssvc.exe
Token: SeAuditPrivilege	3048	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 620	2196	Babik_04_01_2021_31KB.exe	28
PID 2196 wrote to memory of 620	2196	Babik_04_01_2021_31KB.exe	28
PID 2196 wrote to memory of 620	2196	Babik_04_01_2021_31KB.exe	28
PID 2196 wrote to memory of 620	2196	Babik_04_01_2021_31KB.exe	28
PID 620 wrote to memory of 2888	620	cmd.exe	30
PID 620 wrote to memory of 2888	620	cmd.exe	30
PID 620 wrote to memory of 2888	620	cmd.exe	30
PID 2196 wrote to memory of 2684	2196	Babik_04_01_2021_31KB.exe	37
PID 2196 wrote to memory of 2684	2196	Babik_04_01_2021_31KB.exe	37
PID 2196 wrote to memory of 2684	2196	Babik_04_01_2021_31KB.exe	37
PID 2196 wrote to memory of 2684	2196	Babik_04_01_2021_31KB.exe	37
PID 2684 wrote to memory of 2400	2684	cmd.exe	39
PID 2684 wrote to memory of 2400	2684	cmd.exe	39
PID 2684 wrote to memory of 2400	2684	cmd.exe	39

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Babik_04_01_2021_31KB.exe
"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Babik_04_01_2021_31KB.exe"
1⤵
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:620
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2888
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2400

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

How To Restore Your Files.txt

Path \Device\HarddiskVolume1\Boot\cs-CZ\How To Restore Your Files.txt
Size 1KB
SHA256 db1c8cafdedfc4be8dd6b81aa086b998ae49ad929b8a260d4030c7b5ca373a45
MD5 b6e97028103bc6b18214f4b2bd0e0d23
SHA1 4c202c77782d55af635c28fa71b2ba58b294415e
SHA512 214f7e9354a76f031bc3d28c6c20b3d5fafed32e5cb2d7414b7c2d185637d2f47e3538b62c722ba8b018cb3e6e3d9ff11bd6437d3f2af8eca9cd8504eb8c0f7d
MD5 SHA1 SHA512

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