babuk | f1719415abe4dcba0daef0a1e5c8994d1d3c0c659d3e0a11b34f307370dd8683

General

Target

e_win.exe
Size

79KB
MD5

0bbb5eafade47a9d212a23fc886646b7
SHA1

e0968b05a8c11386bbfd2a7f85e2ce3510b31094
SHA256

f1719415abe4dcba0daef0a1e5c8994d1d3c0c659d3e0a11b34f307370dd8683
SHA512

82aab3917be8eaa6039f8ac94004b5f9ceb2003c7c600db590d76e9489b23fe271c043f48ef16d93fb07fc29cce8b3e71b2c7b2ea372fa42245552b335b5621e

Score

10^/10

babuk ransomware

Malware Config

Extracted

Path

C:\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/85a561daffd57e8d98486ad0647dcbb578c2a6d0f0269a4c4f9acce1798ade42/ 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/546838a4129734c99d8356153e220af78e7863cf49ac908304b07cd97192508f * 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/85a561daffd57e8d98486ad0647dcbb578c2a6d0f0269a4c4f9acce1798ade42/

http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/

http://tsu2dpiiv4zjzfyq73eibemit2qyrimbbb6lhpm6n5ihgallom5lhdyd.onion/546838a4129734c99d8356153e220af78e7863cf49ac908304b07cd97192508f

Signatures

Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 5 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\RemoveStart.tiff	e_win.exe
File renamed	C:\Users\Admin\Pictures\InitializeStep.tif => C:\Users\Admin\Pictures\InitializeStep.tif.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\InitializeStep.tif.babyk	e_win.exe
File renamed	C:\Users\Admin\Pictures\RemoveStart.tiff => C:\Users\Admin\Pictures\RemoveStart.tiff.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\RemoveStart.tiff.babyk	e_win.exe

Enumerates connected drives 3 TTPs 24 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)	\??\Q:	e_win.exe
File opened (read-only)	\??\T:	e_win.exe
File opened (read-only)	\??\U:	e_win.exe
File opened (read-only)	\??\S:	e_win.exe
File opened (read-only)	\??\F:	e_win.exe
File opened (read-only)	\??\K:	e_win.exe
File opened (read-only)	\??\B:	e_win.exe
File opened (read-only)	\??\J:	e_win.exe
File opened (read-only)	\??\Z:	e_win.exe
File opened (read-only)	\??\V:	e_win.exe
File opened (read-only)	\??\M:	e_win.exe
File opened (read-only)	\??\N:	e_win.exe
File opened (read-only)	\??\W:	e_win.exe
File opened (read-only)	\??\E:	e_win.exe
File opened (read-only)	\??\P:	e_win.exe
File opened (read-only)	\??\A:	e_win.exe
File opened (read-only)	\??\H:	e_win.exe
File opened (read-only)	\??\L:	e_win.exe
File opened (read-only)	\??\X:	e_win.exe
File opened (read-only)	\??\R:	e_win.exe
File opened (read-only)	\??\Y:	e_win.exe
File opened (read-only)	\??\I:	e_win.exe
File opened (read-only)	\??\O:	e_win.exe
File opened (read-only)	\??\G:	e_win.exe

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

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 2 IoCs

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

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1972	vssadmin.exe
812	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1924	e_win.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1772	vssvc.exe
Token: SeRestorePrivilege	1772	vssvc.exe
Token: SeAuditPrivilege	1772	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 1996	1924	e_win.exe	26
PID 1924 wrote to memory of 1996	1924	e_win.exe	26
PID 1924 wrote to memory of 1996	1924	e_win.exe	26
PID 1924 wrote to memory of 1996	1924	e_win.exe	26
PID 1996 wrote to memory of 1972	1996	cmd.exe	28
PID 1996 wrote to memory of 1972	1996	cmd.exe	28
PID 1996 wrote to memory of 1972	1996	cmd.exe	28
PID 1924 wrote to memory of 752	1924	e_win.exe	32
PID 1924 wrote to memory of 752	1924	e_win.exe	32
PID 1924 wrote to memory of 752	1924	e_win.exe	32
PID 1924 wrote to memory of 752	1924	e_win.exe	32
PID 752 wrote to memory of 812	752	cmd.exe	35
PID 752 wrote to memory of 812	752	cmd.exe	35
PID 752 wrote to memory of 812	752	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\e_win.exe
"C:\Users\Admin\AppData\Local\Temp\e_win.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1972
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:752
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:812

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1772

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

Replay Monitor

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Downloads

memory/1924-2-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1924-3-0x0000000001E10000-0x0000000001E21000-memory.dmp

Filesize
68KB

Download
memory/1924-4-0x0000000002220000-0x0000000002231000-memory.dmp

Filesize
68KB

Download

Analysis

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