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> 9064d8b148a0f19a9e3598a6e0b0aeb16b26dd98663f9745164eefdf45b6ef3c </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=9064d8b148a0f19a9e3598a6e0b0aeb16b26dd98663f9745164eefdf45b6ef3c">http://tijykgureh7kqq5cczzeutaoxvmf6yinpar72o3bxome7b44vwqxadyd.onion/?cid=9064d8b148a0f19a9e3598a6e0b0aeb16b26dd98663f9745164eefdf45b6ef3c</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 1 IoCs
Ransomware generally changes the extension on encrypted files.
ransomware

Processes:

quantum_locker.exe

description ioc process

File renamed C:\Users\Admin\Pictures\SwitchEnter.raw => \??\c:\Users\Admin\Pictures\SwitchEnter.raw.quantum quantum_locker.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\SwitchEnter.raw => \??\c:\Users\Admin\Pictures\SwitchEnter.raw.quantum	quantum_locker.exe

Drops desktop.ini file(s) 25 IoCs

Processes:

quantum_locker.exe

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

Modifies registry class 5 IoCs

Processes:

quantum_locker.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000_Classes\.quantum\shell	quantum_locker.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000_Classes\.quantum\shell\Open	quantum_locker.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000_Classes\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	quantum_locker.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000_Classes\.quantum\shell\Open\command	quantum_locker.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000_Classes\.quantum	quantum_locker.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

quantum_locker.exe

pid process

4440 quantum_locker.exe
4440 quantum_locker.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

quantum_locker.exe

description pid process

Token: SeRestorePrivilege 4440 quantum_locker.exe
Token: SeDebugPrivilege 4440 quantum_locker.exe

pid	process
4440	quantum_locker.exe
4440	quantum_locker.exe

description	pid	process
Token: SeRestorePrivilege	4440	quantum_locker.exe
Token: SeDebugPrivilege	4440	quantum_locker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

quantum_locker.execmd.exe

description	pid	process	target process
PID 4440 wrote to memory of 3912	4440	quantum_locker.exe	cmd.exe
PID 4440 wrote to memory of 3912	4440	quantum_locker.exe	cmd.exe
PID 3912 wrote to memory of 3424	3912	cmd.exe	attrib.exe
PID 3912 wrote to memory of 3424	3912	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

3424 attrib.exe

pid	process
3424	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⤵
- 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:4440
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0E56B626.bat" "C:\Users\Admin\AppData\Local\Temp\quantum_locker\quantum_locker.exe""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3912
- - 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:3424

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\0E56B626.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

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

Filesize
2KB

MD5
701afd391301bccef3de9558c8aa86ea

SHA1
5e7c84ee4a8ac22a83b10ff5f0c274f53fc70bec

SHA256
5bf44eec39e6085e9ae20188bdf213a2c2edc8ec4afef09c687ff90b79bda428

SHA512
70a931424cd6d2e5b773124586658f707f9ab5f93fc46ffe807613a556088cb97ad7dae7c4abb08713b79135cc87f545626e676fb04b21db6998d78d908b4f87

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads