quantum | 686c57db4eb63748c3ddfcfdecc9258e47fa0dc62762ffd4c0519f4a92d074dd

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04-02-2024 18:26

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General

Target

2cbb3497bfa28d9966c1feeae96d452d.dll
Size

1.6MB
MD5

2cbb3497bfa28d9966c1feeae96d452d
SHA1

9ef94c7d3fedc71bb3ed1abf542dfc7ec692883d
SHA256

85c3b718090144dadeb8035ac287d46b9d3458f9de409229217d42a475f42868
SHA512

eed7b210655030b3855f7a20f3bc7aecf8b927a33dfdaefe1d769fa42cbf7c88b1e8ab625f7258a79d2625e06005d25b03691fe911330876ae9e7f916ab2fe4c
SSDEEP

24576:KlQyNmMnq70NDxLOd0+UU1Thef1HrmP1D2:KlQyNmMq70NDROd0+UU1ThoHrA

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> f5de48b476c53833c47bc3b7c594420229c1ba29c9957131bdf3164bbef6294b </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://lsxkornhwiuchwvtrm2ru2hr25rovmyvrurgej7kwv3vd6rvbznpdwid.onion/?cid=f5de48b476c53833c47bc3b7c594420229c1ba29c9957131bdf3164bbef6294b">http://lsxkornhwiuchwvtrm2ru2hr25rovmyvrurgej7kwv3vd6rvbznpdwid.onion/?cid=f5de48b476c53833c47bc3b7c594420229c1ba29c9957131bdf3164bbef6294b</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

Deletes itself 1 IoCs

pid	Process
812	cmd.exe

Drops desktop.ini file(s) 32 IoCs

description	ioc	Process
File opened for modification	\??\c:\Users\Admin\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Music\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\Pictures\Sample Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\Links\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\Music\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\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Saved Games\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\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\Recorded TV\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Videos\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\EW3J74TG\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\TNEMG9GL\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Links\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\VFIJ47B3\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Favorites\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\AppData\Local\Microsoft\Feeds Cache\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\V17S5RKJ\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\Contacts\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Documents\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Documents\desktop.ini	rundll32.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:	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
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.quantum\shell\Open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.quantum	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.quantum\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.quantum\shell\Open	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2392	rundll32.exe
2392	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	2392	rundll32.exe
Token: SeDebugPrivilege	2392	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2392	3056	rundll32.exe	28
PID 3056 wrote to memory of 2392	3056	rundll32.exe	28
PID 3056 wrote to memory of 2392	3056	rundll32.exe	28
PID 3056 wrote to memory of 2392	3056	rundll32.exe	28
PID 3056 wrote to memory of 2392	3056	rundll32.exe	28
PID 3056 wrote to memory of 2392	3056	rundll32.exe	28
PID 3056 wrote to memory of 2392	3056	rundll32.exe	28
PID 2392 wrote to memory of 812	2392	rundll32.exe	32
PID 2392 wrote to memory of 812	2392	rundll32.exe	32
PID 2392 wrote to memory of 812	2392	rundll32.exe	32
PID 2392 wrote to memory of 812	2392	rundll32.exe	32
PID 812 wrote to memory of 1752	812	cmd.exe	34
PID 812 wrote to memory of 1752	812	cmd.exe	34
PID 812 wrote to memory of 1752	812	cmd.exe	34
PID 812 wrote to memory of 1752	812	cmd.exe	34

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1752	attrib.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2cbb3497bfa28d9966c1feeae96d452d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2cbb3497bfa28d9966c1feeae96d452d.dll,#1
  2⤵
  - Drops desktop.ini file(s)
  - Enumerates connected drives
  - Drops file in Program Files directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2392
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\\0F772C6D.bat" "C:\Users\Admin\AppData\Local\Temp\2cbb3497bfa28d9966c1feeae96d452d.dll""
    3⤵
    - Deletes itself
    - Suspicious use of WriteProcessMemory
    PID:812
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\2cbb3497bfa28d9966c1feeae96d452d.dll"
      4⤵
      Views/modifies file attributes
      PID:1752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
bc8488c86ea588f7ff8bcdddabd26d6a

SHA1
56b5128957664b48d9bfa75ee3b9304c2d86007c

SHA256
53703a38c75a4dc3f5c8be7a7a85b708196122d31de3e95b24f2c96b9833a8e6

SHA512
4f5f61f23fcfbca8fce0e37f6447e2bdbab2635e9f9890463a26ddee0a12015c74b82b896fd0e923acbb568d1ceacaaf7c0557dec4ffa94f766f5074b44ffe69

Download Submit
C:\Users\Admin\AppData\Local\Temp\0F772C6D.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit
memory/2392-26-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-16-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-6-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-7-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-8-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-17-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-0-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-4-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-2-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-360-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-361-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-568-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-579-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-1-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download
memory/2392-590-0x0000000000960000-0x0000000000A31000-memory.dmp

Filesize
836KB

Download