quantum | 652c394928687ed453c34befbbe373f78a0258a40b0f40db425ad232ad761b85

General

Target

quantum_locker/quantum_locker.exe
Size

75KB
MD5

0706764b3963df092079d3bdef787a1f
SHA1

73c2460d59f3d0637523ca6d35425aae14358ba1
SHA256

b63e94928da25e18caa1506305b9ca3dedc267e747dfa4710860e757d2cc8192
SHA512

3af7ff3b2aa689eb4c410562b5ead74ff77417da941521928391c6fac3dcc6a75f6d866f52b12f67a41564cfa81afcda51857c0f208f9e90e8629e0f0b5d5cb4
SSDEEP

1536:9aX51pVH9hsgNGLs6BLM1frxz/HTfcKKBaJGp:OfJGLs6BwNxnfTKsG

Score

10^/10

quantum ransomware

Malware Config

Extracted

Path

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

Family

quantum

Ransom Note

<html> <head> <title>Quantum</title> </head> <body> <h1>Your ID:</h1> <pre> 9064d8b148a0f19a9e3598a6e0b0aeb17d30c8897d298148164eefdf45b6ef58 </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=9064d8b148a0f19a9e3598a6e0b0aeb17d30c8897d298148164eefdf45b6ef58">http://tijykgureh7kqq5cczzeutaoxvmf6yinpar72o3bxome7b44vwqxadyd.onion/?cid=9064d8b148a0f19a9e3598a6e0b0aeb17d30c8897d298148164eefdf45b6ef58</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

Drops desktop.ini file(s) 25 IoCs

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

Enumerates connected drives 3 TTPs 1 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)	\??\f:	quantum_locker.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\.quantum\shell\Open\command	quantum_locker.exe
Key created	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\.quantum	quantum_locker.exe
Key created	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\.quantum\shell	quantum_locker.exe
Key created	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\.quantum\shell\Open	quantum_locker.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000_Classes\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	quantum_locker.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2756	quantum_locker.exe
2756	quantum_locker.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	2756	quantum_locker.exe
Token: SeDebugPrivilege	2756	quantum_locker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 1504	2756	quantum_locker.exe	92
PID 2756 wrote to memory of 1504	2756	quantum_locker.exe	92
PID 1504 wrote to memory of 3040	1504	cmd.exe	94
PID 1504 wrote to memory of 3040	1504	cmd.exe	94

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3040	attrib.exe

C:\Users\Admin\AppData\Local\Temp\quantum_locker\quantum_locker.exe
"C:\Users\Admin\AppData\Local\Temp\quantum_locker\quantum_locker.exe"
1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0E580F3D.bat" "C:\Users\Admin\AppData\Local\Temp\quantum_locker\quantum_locker.exe""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\quantum_locker\quantum_locker.exe"
    3⤵
    - Views/modifies file attributes
    PID:3040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

1

T1564.001

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\0E580F3D.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

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

Filesize
2KB

MD5
37d37ee07cc60fb8778228cc0279d867

SHA1
f9aeef8388431d32d8ca871495ac5e30b9ed84c8

SHA256
a516094f8e9d015b7443b26f60c55d4da9ac878cfd2850402699a51504aa4457

SHA512
5e80b9a013ce5e8193247f218772593db0de9b5334b35a4a2007c25c433b772271f6fdd004cedfa38c4480913600c6e125ee89906f8c2c8d7b2938465677863d

Download Submit

Analysis

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