babuk | c5741701b3866459dd1ffa2477cfd8776713612912693a5897f78aac795d23e9

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28-07-2024 16:38

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07-07-2024 14:07

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07-07-2024 14:07

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13-09-2022 17:54

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Analysis

max time kernel
1561s
max time network
1563s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
07-07-2024 14:07

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General

Target

RansomwareSamples/Babuk_20_04_2021_79KB.exe
Size

79KB
MD5

024382eef9abab8edd804548f94b78fc
SHA1

b69a5385d880f4d0acd3358df002aba42b12820f
SHA256

c4282e9040cdc1df92b722568a8b4c42ce9f6533fed0bd34b7fdbae264947784
SHA512

011bd185ef5aef409dbd198f59829d9812d2b1ead69e867e8b9983eb7c742356b074b17383c17fe22f417b61e6aaf7858cbb9e3abd5d25d02f256b69834c42d4
SSDEEP

1536:jRS6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:jRMhZ5YesrQLOJgY8Zp8LHD4XWaNH71m

Score

10^/10

babuk defense_evasion execution impact ransomware

Malware Config

Extracted

Path

C:\PerfLogs\Admin\How To Restore Your Files.txt

Ransom Note

############## [ babuk ransomware greetings you ] ############## Introduction ---------------------------------------------- Congratulations! If you see this note, your company've been randomly chosen for security audit and your company haven't passed it. Unfortunately your servers are encrypted, backups are encrtypted too or deleted. Our enctyption algorythms are strong and it's impossible to decrypt your stuff without our help. Only one method to restore all your network and systems is - to buy our universal decryption software. Follow simple steps that discribed down below and your data will be saved. In case you ignore this situation, the consequences could me much serious, than you can imagine. Guarantees ---------------------------------------------- The hack and system encryption wasn't compromised by your competitors or any other 3rd party, this is just and only our initiative and only thing we interested is profit. Accurding the previous sentence We are very much value of 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 guarantee full support and help through the all decryption process. As the proof of our abilities and honesty, we can decrypt few small files for free, check the link provided and ask any questions. Data leakage ---------------------------------------------- We have copied some quantity of data from your servers. Check those proofs and estimate the seriousness of consequences which can occur in case you ignore us: http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/blog/55a5aa93131ff81478afe895d99ccb1e5350128a6a85abe0955dc9af55c31e66/ This link is private and only you can see it. Use tor browser to open link. Ignoring the interaction with us brings you the publishing your data in our public blog http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/ Contact ---------------------------------------------- 1) Download tor browser: https://www.torproject.org/download/ 2) Open it 3) Follow this link in tor browser: http://tsu2dpiiv4zjzfyq73eibemit2qyrimbbb6lhpm6n5ihgallom5lhdyd.onion/92c51a11c29950b07fc1e46c752e7d40a363ce64447d698442331feaf7de7397 * 6 simple steps do minimize harm from ransomware. ----------------------------------------------------------------------------------------------------------------- Thousands of companies around the world are struggling on ransomware these days, and the most of companies are making the same mistakes again and again. Let�s figure out how to minimize harm and do not be a dumb and pathetic donkey which will make fun for journalists and so on.. 1. If you see small fella malicious .exe file never load it to virustotal.com or any other virus researching website. Otherwise the info about the hack is not a secret anymore. The fact that your company is under ransomware attack is already known by filthy predators data security agents who will post in their pity twitters the fresh known news �OMG ANOTHER RANSOMWARE NOW IT�S �Your company name LLC!!!!! We are all gonna die aaaaaa halp� 2. No any public announcements about the hack or data leakage. And do not applicate to law enforcement. If you commit this actions, more serious consequences can occur and you pay much more than a ransom amount. Law structures like GDPR in this case can oblige you to pay huge fine. 3. As soon as you see your network compromised, follow the link inside any note and follow instructions. 4. Calm your employees. Explain them that this is a drill. And you test your network security systems. 5. If you decide to hire the data recovery company, obligate them to do not inform anyone and any third party about details of the attack. We strongly do not recommend to cooperate with data recovery company, because they do absolutely nothing that you can do by yourself and take money for it. all communications with hackers could be conducted by your it department indipendently without any extra payments. 6. Do not try to decrypt your data via 3rd party software. Most of ransomware use strong encryption algorthm and you can harm your files by using 3rd party decryption software.

URLs

http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/blog/55a5aa93131ff81478afe895d99ccb1e5350128a6a85abe0955dc9af55c31e66/

http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/

http://tsu2dpiiv4zjzfyq73eibemit2qyrimbbb6lhpm6n5ihgallom5lhdyd.onion/92c51a11c29950b07fc1e46c752e7d40a363ce64447d698442331feaf7de7397

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 (227) 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)	\??\A:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\J:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\V:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\Y:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\U:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\O:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\G:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\M:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\T:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\I:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\S:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\H:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\Z:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\R:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\P:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\E:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\K:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\L:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\X:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\B:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\N:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\Q:	Babuk_20_04_2021_79KB.exe
File opened (read-only)	\??\W:	Babuk_20_04_2021_79KB.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
1564	vssadmin.exe
2560	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2480	Babuk_20_04_2021_79KB.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2868	vssvc.exe
Token: SeRestorePrivilege	2868	vssvc.exe
Token: SeAuditPrivilege	2868	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 1048	2480	Babuk_20_04_2021_79KB.exe	28
PID 2480 wrote to memory of 1048	2480	Babuk_20_04_2021_79KB.exe	28
PID 2480 wrote to memory of 1048	2480	Babuk_20_04_2021_79KB.exe	28
PID 2480 wrote to memory of 1048	2480	Babuk_20_04_2021_79KB.exe	28
PID 1048 wrote to memory of 1564	1048	cmd.exe	30
PID 1048 wrote to memory of 1564	1048	cmd.exe	30
PID 1048 wrote to memory of 1564	1048	cmd.exe	30
PID 2480 wrote to memory of 2372	2480	Babuk_20_04_2021_79KB.exe	34
PID 2480 wrote to memory of 2372	2480	Babuk_20_04_2021_79KB.exe	34
PID 2480 wrote to memory of 2372	2480	Babuk_20_04_2021_79KB.exe	34
PID 2480 wrote to memory of 2372	2480	Babuk_20_04_2021_79KB.exe	34
PID 2372 wrote to memory of 2560	2372	cmd.exe	36
PID 2372 wrote to memory of 2560	2372	cmd.exe	36
PID 2372 wrote to memory of 2560	2372	cmd.exe	36

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\Babuk_20_04_2021_79KB.exe
"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Babuk_20_04_2021_79KB.exe"
1⤵
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1564
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2560

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2868

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

Replay Monitor

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Downloads

C:\PerfLogs\Admin\How To Restore Your Files.txt

Filesize
4KB

MD5
81fc4c91a0938482f65a72216cda1e39

SHA1
3fb3d27ceb1502ddf0d68fa9251a6aec46036377

SHA256
59ac7c1a064a53196eb135e59ab7b658577fd2ad22b45a02b77f1df630912591

SHA512
ef34299b9f48c9362fadd6da53ef4c57a5d4b3cb95e35ad5be24f51249e8bbd5a5df519065212f120897461f7360c415c20dcebd74a29221086208d8f8d6d1f4

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