babuk | c5741701b3866459dd1ffa2477cfd8776713612912693a5897f78aac795d23e9

max time kernel
646s
max time network
660s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
31/03/2025, 00:22

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
RansomwareSamples/Babik_04_01_2021_31KB.exe
Size 30KB
Sample250331-apdw1ssjs8
SHA256 8203c2f00ecd3ae960cb3247a7d7bfb35e55c38939607c85dbdb5c92f0495fa9
MD5 e10713a4a5f635767dcd54d609bed977
SHA1 320d799beef673a98481757b2ff7e3463ce67916
SHA512 fed1cb7e1798ea0d131a0d4962a2b9f6c700ee3e1c9482c7837be930ce5167196ac7b1e715d9c9a5c171c349f3df3dde1a42db8e439459bc742928f9d19b38a7
SSDEEP 768:S4DnL4DGrUVvP917yo6Xee7amb26ZghLybmGJ87tHvg7jzTzt:SILd639NdCbXZxbytH6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

babuk credential_access defense_evasion discovery execution impact ransomware spyware stealer

Malware Config

Extracted

Path

\Device\HarddiskVolume1\Boot\bg-BG\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
Babuk family
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 (2120) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2067557190-3677960511-2209622391-1000\Control Panel\International\Geo\Nation	Babik_04_01_2021_31KB.exe

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

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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)	\??\X:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\V:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\Q:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\O:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\K:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\B:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\M:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\U:	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)	\??\G:	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
File opened (read-only)	\??\W:	Babik_04_01_2021_31KB.exe
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)	\??\H:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\N:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\T:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\I:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\S:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\D:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\J:	Babik_04_01_2021_31KB.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
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
1392	vssadmin.exe
5536	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2067557190-3677960511-2209622391-1000_Classes\Local Settings\MuiCache	StartMenuExperienceHost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe
4384	Babik_04_01_2021_31KB.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1644	vssvc.exe
Token: SeRestorePrivilege	1644	vssvc.exe
Token: SeAuditPrivilege	1644	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4016	StartMenuExperienceHost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 5628	4384	Babik_04_01_2021_31KB.exe	82
PID 4384 wrote to memory of 5628	4384	Babik_04_01_2021_31KB.exe	82
PID 5628 wrote to memory of 1392	5628	cmd.exe	84
PID 5628 wrote to memory of 1392	5628	cmd.exe	84
PID 4384 wrote to memory of 2760	4384	Babik_04_01_2021_31KB.exe	93
PID 4384 wrote to memory of 2760	4384	Babik_04_01_2021_31KB.exe	93
PID 2760 wrote to memory of 5536	2760	cmd.exe	95
PID 2760 wrote to memory of 5536	2760	cmd.exe	95

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⤵
- Checks computer location settings
- Drops startup file
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5628
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1392
- 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:5536

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1644

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:4432

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4016

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

Credentials from Web Browsers

T1555.003

Windows Credential Manager

T1555.004

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

StartUnifiedTileModelCache.dat

Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat
Size 10KB
SHA256 87cce0792e0714cab104bfc0d6e304f18dac1267b4bdeb9fdca4abc8cff9cd61
MD5 b2119e3441ef48bea7c71fb753df7b31
SHA1 4fcee5fc19db54a22772eeef0ba9746b287aa018
SHA512 b0a2e8458d6c6f9e77de571fdd1446e7d68f3b029aed1230196acb941363cd0f058b4e2e99e79299b65f70217ce120ac4ec1f7b1929085be1fceda6557aee2ad
SSDEEP 192:qJDY6ra3TvpJmx97iyi7czkYJekoJkpCk5NZzksz2ZUhmkDSRRPQRQYqxefQOVjY:qJNGpJpczkkeZJBAvpm3efQOVjeQ8RJZ
MD5 SHA1 SHA512 SSDEEP

Submit Download

StartUnifiedTileModelCache.dat

Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat
Size 11KB
SHA256 0d154d395d3316b472c17407b77e724e4ed0665113e9694bb70fb380ed427e81
MD5 db3aaf7ad7d9a67c309214e7f93600bf
SHA1 691a8e45a6797f52f2447632cf1d0d071bf59f7b
SHA512 df59ae978a56a02afd33e1ed94f35436dd4762f47abcfc68e7323c0e4b19d135719751b49d2059d50a005c66e2f4bbaf6dd291bc559580cb0704efff2394f677
SSDEEP 192:HJ8Y6ra3TvpJmx97iyi7czkYJekoJkpCk5NZzksz2ZUhmkDSRRPQRQYqxefQOVjC:HJGGpJpczkkeZJBAvpm3efQOVjeQ8RJ3
MD5 SHA1 SHA512 SSDEEP

Submit Download

How To Restore Your Files.txt

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

Submit Download