quantum | faf49653a0f057ed09a75c4dfc01e4d8e6fef203d0102a5947a73db80be0db1d

General

Target

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:\Users\Admin\Desktop\README_TO_DECRYPT.html

Family

quantum

Ransom Note

<html> <head> <title>Quantum</title> </head> <body> <h1>Your ID:</h1> <pre> ac76ebfba8f313e3035387cd174939e02a9ca175dea80b9701799fd203769b65 </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=ac76ebfba8f313e3035387cd174939e02a9ca175dea80b9701799fd203769b65">http://tijykgureh7kqq5cczzeutaoxvmf6yinpar72o3bxome7b44vwqxadyd.onion/?cid=ac76ebfba8f313e3035387cd174939e02a9ca175dea80b9701799fd203769b65</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

Processes:

rundll32.exe

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\ConnectSave.crw => \??\c:\Users\Admin\Pictures\ConnectSave.crw.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\MoveRepair.png => \??\c:\Users\Admin\Pictures\MoveRepair.png.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\SearchMount.tif => \??\c:\Users\Admin\Pictures\SearchMount.tif.quantum	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\SkipDisable.tiff	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\BlockImport.tiff	rundll32.exe
File renamed	C:\Users\Admin\Pictures\BlockImport.tiff => \??\c:\Users\Admin\Pictures\BlockImport.tiff.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\BlockSearch.tif => \??\c:\Users\Admin\Pictures\BlockSearch.tif.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ConfirmSend.raw => \??\c:\Users\Admin\Pictures\ConfirmSend.raw.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\SkipDisable.tiff => \??\c:\Users\Admin\Pictures\SkipDisable.tiff.quantum	rundll32.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
544	cmd.exe

Drops desktop.ini file(s) 26 IoCs

Processes:

rundll32.exe

description	ioc	Process
File opened for modification	\??\c:\Users\Admin\Documents\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\Links for United States\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Libraries\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Music\Sample Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Pictures\Sample Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Recorded TV\Sample Media\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Videos\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Desktop\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\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Videos\Sample Videos\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\Links\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Searches\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Contacts\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Videos\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Documents\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Recorded TV\desktop.ini	rundll32.exe

Modifies registry class 5 IoCs

Processes:

rundll32.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.quantum\shell\Open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.quantum	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.quantum\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.quantum\shell\Open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid	Process
1208	rundll32.exe
1208	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exe

description	pid	Process
Token: SeRestorePrivilege	1208	rundll32.exe
Token: SeDebugPrivilege	1208	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.execmd.exe

description	pid	Process	procid_target
PID 1208 wrote to memory of 544	1208	rundll32.exe	29
PID 1208 wrote to memory of 544	1208	rundll32.exe	29
PID 1208 wrote to memory of 544	1208	rundll32.exe	29
PID 544 wrote to memory of 952	544	cmd.exe	31
PID 544 wrote to memory of 952	544	cmd.exe	31
PID 544 wrote to memory of 952	544	cmd.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Processes:

attrib.exe

pid	Process
952	attrib.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\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:1208
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\\006C71A8.bat" """
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:544
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h ""
    3⤵
    - Views/modifies file attributes
    PID:952

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

C:\Users\Admin\AppData\Local\Temp\.log

Filesize
69KB

MD5
cd2751a922c65f9fb8a580b378bae31f

SHA1
f456431648eacefc9cc146ad3b7a753074e6037e

SHA256
3eedf62aead4379dde47656905a66ee23c8d97cb59e3cdf5715dc03e6f97a868

SHA512
5b95c187b05aa29b271f0f64c0b98cf2c604cb52e2de067f0a9971b16bd4cdae309733e0dc9d97f7e1cf31c31b901601749854547a884932bda1bdf5fe94b7c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\006C71A8.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit
C:\Users\Admin\AppData\Local\Temp\006C71A8.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

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

Filesize
2KB

MD5
dbb237db15b08dd707f5b7dc3e5f4ce0

SHA1
03a6d435f7f312adf4ee50c13e4884fdac3513e4

SHA256
dab86bea2d86359a2bfe80fac940af846c8bfbf3ed7c2910ace0a13ae5272dcc

SHA512
5d48868819bb45827b79dfebf88fdd018de000c04fcc1ff4c09f2d7a4690118a87d8e4c6459b1dcb9376374781725dd717a8faa54bc374c7472e88de05497da5

Download Submit
memory/1208-54-0x000007FFFFF90000-0x000007FFFFFA8000-memory.dmp

Filesize
96KB

Download
memory/1208-55-0x000007FFFFF90000-0x000007FFFFFA8000-memory.dmp

Filesize
96KB

Download
memory/1208-57-0x000007FFFFF90000-0x000007FFFFFA8000-memory.dmp

Filesize
96KB

Download
memory/1208-68-0x000007FFFFF90000-0x000007FFFFFA8000-memory.dmp

Filesize
96KB

Download
memory/1208-59-0x000007FFFFF90000-0x000007FFFFFA8000-memory.dmp

Filesize
96KB

Download
memory/1208-310-0x000007FFFFF90000-0x000007FFFFFA8000-memory.dmp

Filesize
96KB

Download
memory/1208-313-0x000007FFFFF90000-0x000007FFFFFA8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads