quantum | edf7c1f8eeacc6488b621bafd733ee8b5744ebc76f2bfd2607aeba5cc8b2602a

Analysis

max time kernel
30s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
01-03-2023 17:27

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General

Target

edf7c1f8eeacc6488b621bafd733ee8b5744ebc76f2bfd2607aeba5cc8b2602a.dll
Size

74KB
MD5

f6ae7a37bae4e80f6514c14695b9cc38
SHA1

42987e66bd73418085e798a60f8ae1e0f1e02119
SHA256

edf7c1f8eeacc6488b621bafd733ee8b5744ebc76f2bfd2607aeba5cc8b2602a
SHA512

7827b6bc56f358ea09b02232ce7f41493d69f3aa9e65c0eb58fb6b696ac13cbed894774ffd9e39a084abfc50c459201e727619fd54b612ea62211a69f1d40700
SSDEEP

1536:daXbNVxTe67EXHnD5Pvs5VlEJkFs0jCp0:ubNVDgmJEJkFLCK

Score

10^/10

quantum ransomware

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\README_TO_DECRYPT.html

Family

quantum

Ransom Note

<html> <head> <title>Quantum</title> </head> <body> <h1>Your ID:</h1> <pre> ed3c2319bd1fb330629b4542597bf81c328faf0bcb81a560b0d405abcd007361 </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://2lshy6lfizovmqhoka4bg3h3selcrfk56fc7g3xj7vfe4zyxy25uapad.onion/?cid=ed3c2319bd1fb330629b4542597bf81c328faf0bcb81a560b0d405abcd007361">http://2lshy6lfizovmqhoka4bg3h3selcrfk56fc7g3xj7vfe4zyxy25uapad.onion/?cid=ed3c2319bd1fb330629b4542597bf81c328faf0bcb81a560b0d405abcd007361</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

description	ioc	Process
File opened for modification	\??\c:\Users\Admin\Pictures\ConvertMerge.tiff	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ConvertMerge.tiff => \??\c:\Users\Admin\Pictures\ConvertMerge.tiff.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\MeasureRemove.crw => \??\c:\Users\Admin\Pictures\MeasureRemove.crw.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ReceiveEnable.tif => \??\c:\Users\Admin\Pictures\ReceiveEnable.tif.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\UnlockRename.tif => \??\c:\Users\Admin\Pictures\UnlockRename.tif.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\UnregisterPublish.tif => \??\c:\Users\Admin\Pictures\UnregisterPublish.tif.quantum	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1740	cmd.exe

Drops desktop.ini file(s) 32 IoCs

description	ioc	Process
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\Contacts\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Searches\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\Links\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\SHXB1JXH\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Documents\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Videos\Sample Videos\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XS6M157B\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Saved Games\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Libraries\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Links\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\Music\Sample Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Recorded TV\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\HC7ZN6SY\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\PLKQQS67\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\AppData\Local\Microsoft\Feeds Cache\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Downloads\desktop.ini	rundll32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\README_TO_DECRYPT.html	rundll32.exe
File created	\??\c:\Program Files (x86)\README_TO_DECRYPT.html	rundll32.exe
File created	\??\c:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\README_TO_DECRYPT.html	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.quantum\shell\Open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.quantum	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.quantum\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.quantum\shell\Open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2020	rundll32.exe
2020	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	2020	rundll32.exe
Token: SeDebugPrivilege	2020	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 1740	2020	rundll32.exe	29
PID 2020 wrote to memory of 1740	2020	rundll32.exe	29
PID 2020 wrote to memory of 1740	2020	rundll32.exe	29
PID 1740 wrote to memory of 1608	1740	cmd.exe	31
PID 1740 wrote to memory of 1608	1740	cmd.exe	31
PID 1740 wrote to memory of 1608	1740	cmd.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1608	attrib.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\edf7c1f8eeacc6488b621bafd733ee8b5744ebc76f2bfd2607aeba5cc8b2602a.dll,#1
1⤵
- Modifies extensions of user files
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\\006C4BD0.bat" "C:\Users\Admin\AppData\Local\Temp\edf7c1f8eeacc6488b621bafd733ee8b5744ebc76f2bfd2607aeba5cc8b2602a.dll""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\edf7c1f8eeacc6488b621bafd733ee8b5744ebc76f2bfd2607aeba5cc8b2602a.dll"
    3⤵
    - Views/modifies file attributes
    PID:1608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\README_TO_DECRYPT.html

Filesize
2KB

MD5
51e178554648a567c07015330d3abfdc

SHA1
ac9b902dd545b3cdf457e0a4cb3e9f2196cad5a2

SHA256
3f3cd068ad1858c70a0ad744243a5413eca69f1346d0043207a5b315b391e074

SHA512
f47d099437ecff050a55b78f548ab5b0ddecf1018603594558e9eb2fd9ca96160b06c0307fdb01b99e49231149c121871b0a88ba8b012e5994a9c52bd12c8d4a

Download Submit
C:\Users\Admin\AppData\Local\Temp\006C4BD0.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit
C:\Users\Admin\AppData\Local\Temp\006C4BD0.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit