quantum | 204ad9cc8149d5f6f24e76ac18883c4843081878397ad9cf2dc29842fc28f277

General

Target

sample/quantumlocker64_faf496.dll
Size

237KB
MD5

1ac3f71feece118a03c9e23af063f6d1
SHA1

bbc3979075e0574e54a5ead497fcba95fcc78fc0
SHA256

faf49653a0f057ed09a75c4dfc01e4d8e6fef203d0102a5947a73db80be0db1d
SHA512

5e75afffb1212057a9431818b54c9d08e4714b316593fd1eb4fe4abf49e85c7ca617d3b8206d97f42278060aee95c1e797df1848f178bded21c52773a5fd65c3
SSDEEP

3072:xpZMSVmCw3tF6iql+IKDQau58yJ5WIxFGddWMf+fmf7eATjiMRnIle8E:hnm78iqIIRauayJ8rhVT9nIle

Score

10^/10

quantum ransomware

Malware Config

Extracted

Path

C:\README_TO_DECRYPT.html

Family

quantum

Ransom Note

<html> <head> <title>Quantum</title> </head> <body> <h1>Your ID:</h1> <pre> ac76ebfba8f313e3035387cd174939e0388eb268ddbd1c8201799fd203769b39 </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=ac76ebfba8f313e3035387cd174939e0388eb268ddbd1c8201799fd203769b39">http://tijykgureh7kqq5cczzeutaoxvmf6yinpar72o3bxome7b44vwqxadyd.onion/?cid=ac76ebfba8f313e3035387cd174939e0388eb268ddbd1c8201799fd203769b39</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 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

rundll32.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\DebugNew.tiff	rundll32.exe
File renamed	C:\Users\Admin\Pictures\DebugNew.tiff => \??\c:\Users\Admin\Pictures\DebugNew.tiff.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\RemoveCompare.tif => \??\c:\Users\Admin\Pictures\RemoveCompare.tif.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\RestartSync.crw => \??\c:\Users\Admin\Pictures\RestartSync.crw.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\SaveJoin.tif => \??\c:\Users\Admin\Pictures\SaveJoin.tif.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\StepClear.raw => \??\c:\Users\Admin\Pictures\StepClear.raw.quantum	rundll32.exe

Drops desktop.ini file(s) 24 IoCs

Processes:

rundll32.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\Camera Roll\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Searches\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Videos\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\Saved Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Documents\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Documents\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\Links\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\OneDrive\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Contacts\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Links\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Saved Games\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\AccountPictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Libraries\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Videos\desktop.ini	rundll32.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1692 3796 WerFault.exe rundll32.exe

pid	pid_target	process	target process
1692	3796	WerFault.exe	rundll32.exe

Modifies registry class 5 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-640001698-3754512395-3275565439-1000_Classes\.quantum\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-640001698-3754512395-3275565439-1000_Classes\.quantum\shell\Open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-640001698-3754512395-3275565439-1000_Classes\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-640001698-3754512395-3275565439-1000_Classes\.quantum\shell\Open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-640001698-3754512395-3275565439-1000_Classes\.quantum	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3796 rundll32.exe
3796 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exe

description pid process

Token: SeRestorePrivilege 3796 rundll32.exe
Token: SeDebugPrivilege 3796 rundll32.exe

pid	process
3796	rundll32.exe
3796	rundll32.exe

description	pid	process
Token: SeRestorePrivilege	3796	rundll32.exe
Token: SeDebugPrivilege	3796	rundll32.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

rundll32.execmd.exe

description	pid	process	target process
PID 3796 wrote to memory of 4888	3796	rundll32.exe	cmd.exe
PID 3796 wrote to memory of 4888	3796	rundll32.exe	cmd.exe
PID 4888 wrote to memory of 528	4888	cmd.exe	attrib.exe
PID 4888 wrote to memory of 528	4888	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

528 attrib.exe

pid	process
528	attrib.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\sample\quantumlocker64_faf496.dll,#1
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:3796
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0E571A8D.bat" """
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4888
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h ""
    3⤵
    - Views/modifies file attributes
    PID:528
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 3796 -s 432
  2⤵
  - Program crash
  PID:1692

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2448

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:\README_TO_DECRYPT.html

Filesize
2KB

MD5
b7f6959164e820e178cf8a31fe982940

SHA1
ade9490ff6c1e393ad44756274f0999770ae05e7

SHA256
fc88a0e27b674dede4ec1535cd3210481719c1ea98d44558ca413fbcbbf1df49

SHA512
41ff1781645a00dc5f7c9ad27016ea3a47b02ed04d0e34068f105cf74387d2597847a56e99feb0151302b068c691d1df0d5ebea8f33ce7392a2797f282d23a42

Download Submit
C:\Users\Admin\AppData\Local\Temp\0E571A8D.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit
C:\Users\Admin\AppData\Local\Temp\sample\.log

Filesize
64KB

MD5
beb197fbb0feea94e44fd053dde081b5

SHA1
edc46284fcdbf9e63b09c984a1cddf3b36abb16b

SHA256
915af8896051755f8e0d1d0c77591f90db8b302f31a923179537fe3702e9abd5

SHA512
6770cc1df3e78c62d71c359fd6de8409a7a846db6289bde80e8da76492ed7255e3dfa2209ea793e574f1a71823041475204a4ad884a3b28d8fc9f9f77785a95e

Download Submit
memory/3796-121-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download
memory/3796-122-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download
memory/3796-125-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download
memory/3796-127-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download
memory/3796-351-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download
memory/3796-352-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download
memory/3796-354-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download
memory/3796-365-0x00007FF75C0C0000-0x00007FF75C0D8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads