babuk | c5741701b3866459dd1ffa2477cfd8776713612912693a5897f78aac795d23e9

Resubmissions

28-07-2024 16:38

240728-t5tryssgmm 10

07-07-2024 14:07

240707-rfgd8atekm 10

07-07-2024 14:07

240707-re689awdpe 10

13-09-2022 17:54

220913-wg1lpsgbg7 10

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-07-2024 16:38

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General

Target

RansomwareSamples/Babik_04_01_2021_31KB.exe
Size

30KB
MD5

e10713a4a5f635767dcd54d609bed977
SHA1

320d799beef673a98481757b2ff7e3463ce67916
SHA256

8203c2f00ecd3ae960cb3247a7d7bfb35e55c38939607c85dbdb5c92f0495fa9
SHA512

fed1cb7e1798ea0d131a0d4962a2b9f6c700ee3e1c9482c7837be930ce5167196ac7b1e715d9c9a5c171c349f3df3dde1a42db8e439459bc742928f9d19b38a7
SSDEEP

768:S4DnL4DGrUVvP917yo6Xee7amb26ZghLybmGJ87tHvg7jzTzt:SILd639NdCbXZxbytH6

Score

10^/10

babuk credential_access defense_evasion discovery execution impact ransomware stealer

Malware Config

Extracted

Path

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

Family

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 (478) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
credential_access stealer

Windows Credential Manager
T1555.004

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\How To Restore Your Files.txt	Babik_04_01_2021_31KB.exe

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)	\??\I:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\G:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\J:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\K:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\Z:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\Y:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\H:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\L:	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)	\??\W:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\U:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\O:	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)	\??\E:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\R:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\T:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\P:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\A:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\S:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\X:	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

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Babik_04_01_2021_31KB.exe

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
592	vssadmin.exe
2816	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe
2580	Babik_04_01_2021_31KB.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2176	vssvc.exe
Token: SeRestorePrivilege	2176	vssvc.exe
Token: SeAuditPrivilege	2176	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 2404	2580	Babik_04_01_2021_31KB.exe	30
PID 2580 wrote to memory of 2404	2580	Babik_04_01_2021_31KB.exe	30
PID 2580 wrote to memory of 2404	2580	Babik_04_01_2021_31KB.exe	30
PID 2580 wrote to memory of 2404	2580	Babik_04_01_2021_31KB.exe	30
PID 2404 wrote to memory of 592	2404	cmd.exe	32
PID 2404 wrote to memory of 592	2404	cmd.exe	32
PID 2404 wrote to memory of 592	2404	cmd.exe	32
PID 2580 wrote to memory of 2772	2580	Babik_04_01_2021_31KB.exe	38
PID 2580 wrote to memory of 2772	2580	Babik_04_01_2021_31KB.exe	38
PID 2580 wrote to memory of 2772	2580	Babik_04_01_2021_31KB.exe	38
PID 2580 wrote to memory of 2772	2580	Babik_04_01_2021_31KB.exe	38
PID 2772 wrote to memory of 2816	2772	cmd.exe	40
PID 2772 wrote to memory of 2816	2772	cmd.exe	40
PID 2772 wrote to memory of 2816	2772	cmd.exe	40

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⤵
- Drops startup file
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2580
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2404
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:592
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2816

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2176

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

Credentials from Password Stores

T1555

Windows Credential Manager

T1555.004

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
b6e97028103bc6b18214f4b2bd0e0d23

SHA1
4c202c77782d55af635c28fa71b2ba58b294415e

SHA256
db1c8cafdedfc4be8dd6b81aa086b998ae49ad929b8a260d4030c7b5ca373a45

SHA512
214f7e9354a76f031bc3d28c6c20b3d5fafed32e5cb2d7414b7c2d185637d2f47e3538b62c722ba8b018cb3e6e3d9ff11bd6437d3f2af8eca9cd8504eb8c0f7d

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