babuk | bb31f235e86b0fda185e6580ef5327f80d6a6c754f78499e8647de5e229769cc

General

Target

l.exe
Size

79KB
MD5

b8e5bd86046b596d8cf43843f433bb5d
SHA1

e4934d730f999bc2bc0e05fec3b9afe324d8a32b
SHA256

bb31f235e86b0fda185e6580ef5327f80d6a6c754f78499e8647de5e229769cc
SHA512

470f1ebc145db53436e545e12172ec9db362f5868819878cacb7f6ca4c1730cd93abc6939ef10a251eee69ba6adf8ea4accb257a4136dbe007b746077a9b0928

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/5cc4505a0bcb13aa5b01043e61918c8f576f615482d298be39068653b9fcde4d/ 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/07a6fcfe223abe38cd6238fdffb4b7ef7f2f342e9a86e3ea7a994195eb73b459 * 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/5cc4505a0bcb13aa5b01043e61918c8f576f615482d298be39068653b9fcde4d/

http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/

http://tsu2dpiiv4zjzfyq73eibemit2qyrimbbb6lhpm6n5ihgallom5lhdyd.onion/07a6fcfe223abe38cd6238fdffb4b7ef7f2f342e9a86e3ea7a994195eb73b459

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 11 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\MountEdit.tif.babyk	l.exe
File opened for modification	C:\Users\Admin\Pictures\StartUninstall.tiff	l.exe
File renamed	C:\Users\Admin\Pictures\StartUninstall.tiff => C:\Users\Admin\Pictures\StartUninstall.tiff.babyk	l.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromUpdate.raw => C:\Users\Admin\Pictures\ConvertFromUpdate.raw.babyk	l.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromUpdate.raw.babyk	l.exe
File renamed	C:\Users\Admin\Pictures\MountEdit.tif => C:\Users\Admin\Pictures\MountEdit.tif.babyk	l.exe
File renamed	C:\Users\Admin\Pictures\MountRead.tif => C:\Users\Admin\Pictures\MountRead.tif.babyk	l.exe
File opened for modification	C:\Users\Admin\Pictures\MountRead.tif.babyk	l.exe
File renamed	C:\Users\Admin\Pictures\SaveRequest.raw => C:\Users\Admin\Pictures\SaveRequest.raw.babyk	l.exe
File opened for modification	C:\Users\Admin\Pictures\SaveRequest.raw.babyk	l.exe
File opened for modification	C:\Users\Admin\Pictures\StartUninstall.tiff.babyk	l.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)	\??\T:	l.exe
File opened (read-only)	\??\I:	l.exe
File opened (read-only)	\??\A:	l.exe
File opened (read-only)	\??\F:	l.exe
File opened (read-only)	\??\G:	l.exe
File opened (read-only)	\??\J:	l.exe
File opened (read-only)	\??\X:	l.exe
File opened (read-only)	\??\Q:	l.exe
File opened (read-only)	\??\E:	l.exe
File opened (read-only)	\??\Z:	l.exe
File opened (read-only)	\??\Y:	l.exe
File opened (read-only)	\??\U:	l.exe
File opened (read-only)	\??\O:	l.exe
File opened (read-only)	\??\S:	l.exe
File opened (read-only)	\??\H:	l.exe
File opened (read-only)	\??\K:	l.exe
File opened (read-only)	\??\L:	l.exe
File opened (read-only)	\??\W:	l.exe
File opened (read-only)	\??\R:	l.exe
File opened (read-only)	\??\P:	l.exe
File opened (read-only)	\??\V:	l.exe
File opened (read-only)	\??\B:	l.exe
File opened (read-only)	\??\N:	l.exe
File opened (read-only)	\??\M:	l.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
1316	vssadmin.exe
408	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3968	l.exe
3968	l.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2744	vssvc.exe
Token: SeRestorePrivilege	2744	vssvc.exe
Token: SeAuditPrivilege	2744	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 1612	3968	l.exe	74
PID 3968 wrote to memory of 1612	3968	l.exe	74
PID 3968 wrote to memory of 2684	3968	l.exe	78
PID 3968 wrote to memory of 2684	3968	l.exe	78
PID 1612 wrote to memory of 1316	1612	cmd.exe	81
PID 1612 wrote to memory of 1316	1612	cmd.exe	81
PID 2684 wrote to memory of 408	2684	cmd.exe	82
PID 2684 wrote to memory of 408	2684	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\l.exe
"C:\Users\Admin\AppData\Local\Temp\l.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1316
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:408