quantum | b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192

General

Target
b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
Size 75KB
Sample230228-rys6qsbd5z
SHA256 b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192
MD5 0706764b3963df092079d3bdef787a1f
SHA1 73c2460d59f3d0637523ca6d35425aae14358ba1
SHA512 3af7ff3b2aa689eb4c410562b5ead74ff77417da941521928391c6fac3dcc6a75f6d866f52b12f67a41564cfa81afcda51857c0f208f9e90e8629e0f0b5d5cb4
SSDEEP 1536:9aX51pVH9hsgNGLs6BLM1frxz/HTfcKKBaJGp:OfJGLs6BwNxnfTKsG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quantum ransomware

Malware Config

Extracted

Path

C:\Users\Admin\Contacts\README_TO_DECRYPT.html

quantum

Ransom Note

<html> <head> <title>Quantum</title> </head> <body> <h1>Your ID:</h1> <pre> 9064d8b148a0f19a9e3598a6e0b0aeb1712ad69767259e56164eefdf45b6ef35 </pre> <hr/> This message contains an information how to fix the troubles you've got with your network. Files on the workstations in your network were encrypted and any your attempt to change, decrypt or rename them could destroy the content. The only way to get files back is a decryption with Key, provided by the Quantum Locker. During the period your network was under our control, we downloaded a huge volume of information. Now it is stored on our servers with high-secure access. This information contains a lot of sensitive, private and personal data. Publishing of such data will cause serious consequences and even business disruption. It's not a threat, on the contrary - it's a manual how to get a way out. Quantum team doesn't aim to damage your company, our goals are only financial. After a payment you'll get network decryption, full destruction of downloaded data, information about your network vulnerabilities and penetration points. If you decide not to negotiate, in 48 hours the fact of the attack and all your information will be posted on our site and will be promoted among dozens of cyber forums, news agencies, websites etc. To contact our support and start the negotiations, please visit our support chat. It is simple, secure and you can set a password to avoid intervention of unauthorised persons. <a href="http://tijykgureh7kqq5cczzeutaoxvmf6yinpar72o3bxome7b44vwqxadyd.onion/?cid=9064d8b148a0f19a9e3598a6e0b0aeb1712ad69767259e56164eefdf45b6ef35">http://tijykgureh7kqq5cczzeutaoxvmf6yinpar72o3bxome7b44vwqxadyd.onion/?cid=9064d8b148a0f19a9e3598a6e0b0aeb1712ad69767259e56164eefdf45b6ef35</a> <ul> <li>Password field should be blank for the first login. <li>Note that this server is available via Tor browser only. </ul> P.S. How to get TOR browser - see at https://www.torproject.org </body> </html>

Signatures

Quantum Ransomware
A rebrand of the MountLocker ransomware first seen in August 2021.
ransomware quantum

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\ImportClear.crw => \??\c:\Users\Admin\Pictures\ImportClear.crw.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\OpenPop.tif => \??\c:\Users\Admin\Pictures\OpenPop.tif.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\SkipClose.crw => \??\c:\Users\Admin\Pictures\SkipClose.crw.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\UndoDisconnect.png => \??\c:\Users\Admin\Pictures\UndoDisconnect.png.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\CheckpointConnect.crw => \??\c:\Users\Admin\Pictures\CheckpointConnect.crw.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\CompressUnprotect.crw => \??\c:\Users\Admin\Pictures\CompressUnprotect.crw.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\RegisterGrant.crw => \??\c:\Users\Admin\Pictures\RegisterGrant.crw.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\SubmitUnpublish.raw => \??\c:\Users\Admin\Pictures\SubmitUnpublish.raw.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File renamed	C:\Users\Admin\Pictures\UseSplit.tif => \??\c:\Users\Admin\Pictures\UseSplit.tif.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe

Drops desktop.ini file(s) 25 IoCs

description	ioc	Process
File opened for modification	\??\c:\Users\Public\Libraries\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\Music\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\Videos\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Contacts\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Favorites\Links\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Videos\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\AccountPictures\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\Desktop\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\Documents\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\Downloads\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\3D Objects\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Desktop\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Documents\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Downloads\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Links\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Music\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\OneDrive\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Pictures\Saved Pictures\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Saved Games\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Favorites\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Pictures\Camera Roll\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Pictures\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Admin\Searches\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
File opened for modification	\??\c:\Users\Public\Pictures\desktop.ini	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\.quantum\shell\Open\command	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\.quantum	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\.quantum\shell	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\.quantum\shell\Open	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1532	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
1532	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	1532	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
Token: SeDebugPrivilege	1532	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1532 wrote to memory of 1128	1532	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe	95
PID 1532 wrote to memory of 1128	1532	b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe	95
PID 1128 wrote to memory of 636	1128	cmd.exe	97
PID 1128 wrote to memory of 636	1128	cmd.exe	97

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
636	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe
"C:\Users\Admin\AppData\Local\Temp\b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe"
1⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1532
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0E5693F8.bat" "C:\Users\Admin\AppData\Local\Temp\b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1128
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192.exe"
    3⤵
    - Views/modifies file attributes
    PID:636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

0E5693F8.bat

Path C:\Users\Admin\AppData\Local\Temp\0E5693F8.bat
Size 65B
SHA256 c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506
MD5 348cae913e496198548854f5ff2f6d1e
SHA1 a07655b9020205bd47084afd62a8bb22b48c0cdc
SHA512 799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611
MD5 SHA1 SHA512

Submit Download

README_TO_DECRYPT.html

Path C:\Users\Admin\Contacts\README_TO_DECRYPT.html
Size 2KB
SHA256 0ff90fa41cfe5a948185a8d2a4f398800df535c1a3386ad265e5753c518aa623
MD5 a7666c61eac5209ab349bb22b56d21ee
SHA1 0196a5f6d00d36b5f0d4c150a83d3268f6a2c324
SHA512 1be019bb7593bd2b6613840cc6115d53e52b1a3453f7bbc6cacb60eb76b692ec38731b28f0e7181259f3feba57d72cd8cbad4d37e2bfaafb84accb9fa3afe39f
MD5 SHA1 SHA512

Submit Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads