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
1584s
max time network
1570s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
07-07-2024 14:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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 defense_evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

\Device\HarddiskVolume1\Boot\da-DK\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 (1641) 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

Processes:

Babik_04_01_2021_31KB.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-771719357-2485960699-3367710044-1000\Control Panel\International\Geo\Nation	Babik_04_01_2021_31KB.exe

Drops startup file 1 IoCs

Processes:

Babik_04_01_2021_31KB.exe

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 2 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

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

Processes:

Babik_04_01_2021_31KB.exe

description	ioc	process
File opened (read-only)	\??\R:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\U:	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)	\??\K:	Babik_04_01_2021_31KB.exe
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)	\??\E:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\I:	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)	\??\G:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\Y:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\M:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\H:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\J:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\L:	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)	\??\T:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\P:	Babik_04_01_2021_31KB.exe
File opened (read-only)	\??\S:	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

Processes:

vssadmin.exevssadmin.exe

pid process

3592 vssadmin.exe
3052 vssadmin.exe

pid	process
3592	vssadmin.exe
3052	vssadmin.exe

Modifies registry class 1 IoCs

Processes:

StartMenuExperienceHost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-771719357-2485960699-3367710044-1000_Classes\Local Settings\MuiCache	StartMenuExperienceHost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Babik_04_01_2021_31KB.exe

pid	process
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe
5040	Babik_04_01_2021_31KB.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 4340 vssvc.exe
Token: SeRestorePrivilege 4340 vssvc.exe
Token: SeAuditPrivilege 4340 vssvc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

StartMenuExperienceHost.exe

pid process

632 StartMenuExperienceHost.exe

description	pid	process
Token: SeBackupPrivilege	4340	vssvc.exe
Token: SeRestorePrivilege	4340	vssvc.exe
Token: SeAuditPrivilege	4340	vssvc.exe

pid	process
632	StartMenuExperienceHost.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Babik_04_01_2021_31KB.execmd.execmd.exe

description	pid	process	target process
PID 5040 wrote to memory of 936	5040	Babik_04_01_2021_31KB.exe	cmd.exe
PID 5040 wrote to memory of 936	5040	Babik_04_01_2021_31KB.exe	cmd.exe
PID 936 wrote to memory of 3592	936	cmd.exe	vssadmin.exe
PID 936 wrote to memory of 3592	936	cmd.exe	vssadmin.exe
PID 5040 wrote to memory of 952	5040	Babik_04_01_2021_31KB.exe	cmd.exe
PID 5040 wrote to memory of 952	5040	Babik_04_01_2021_31KB.exe	cmd.exe
PID 952 wrote to memory of 3052	952	cmd.exe	vssadmin.exe
PID 952 wrote to memory of 3052	952	cmd.exe	vssadmin.exe

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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3592
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:952
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3052

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4340

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:4884

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:632

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat

Filesize
13KB

MD5
7c39bb1f4920be2be02ae6ad4fefd614

SHA1
3fe56e7fcbde259aba45ad36c95265bb0d3746ab

SHA256
b5a0040ff5d4baccac5aff5b5fe8526f5846bf393ba6bc9c393f15a8a04a75ae

SHA512
1af7546ca3565087412d9640a81a20e51e0cc01c9399a0f602f72593e950715ac46a32de0b9e234e352debfb967a2c00bba8b711ae8dc7cfc3935d6e78107568

Download Submit
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat

Filesize
13KB

MD5
931cfaf9eaab8a1c9aaeeb81c308b20b

SHA1
61f5233b87497ca7db82b65cc8b7859543bf401a

SHA256
8860ba65755bc59c3068fd49262d3e95050741284a1969dd9b3aa45adf152b1b

SHA512
885d124cce3056bc2d4aa2669219d4b40249bb5eaec2630974763881ff3633d455582cc5a66697f96fdad2424ed7b20595c1793cd46c6b8acd5721fe3c1f53fd

Download Submit
\Device\HarddiskVolume1\Boot\da-DK\How To Restore Your Files.txt

Filesize
1KB

MD5
b6e97028103bc6b18214f4b2bd0e0d23

SHA1
4c202c77782d55af635c28fa71b2ba58b294415e

SHA256
db1c8cafdedfc4be8dd6b81aa086b998ae49ad929b8a260d4030c7b5ca373a45

SHA512
214f7e9354a76f031bc3d28c6c20b3d5fafed32e5cb2d7414b7c2d185637d2f47e3538b62c722ba8b018cb3e6e3d9ff11bd6437d3f2af8eca9cd8504eb8c0f7d

Download Submit