quantum | 99cb0f92c60d88aadbb3e821f277ab51f6d8861c202cc1e16bb9ff0da10348a9

Analysis

max time kernel
1493s
max time network
1499s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
18-05-2024 15:47

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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 spyware stealer

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> f5de48b476c53833c47bc3b7c594420220deb62cd09f6034bdf3164bbef62937 </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=f5de48b476c53833c47bc3b7c594420220deb62cd09f6034bdf3164bbef62937">http://lsxkornhwiuchwvtrm2ru2hr25rovmyvrurgej7kwv3vd6rvbznpdwid.onion/?cid=f5de48b476c53833c47bc3b7c594420220deb62cd09f6034bdf3164bbef62937</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
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops desktop.ini file(s) 24 IoCs

Processes:

rundll32.exe

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

Processes:

rundll32.exe

description ioc process

File opened (read-only) \??\f: rundll32.exe

description	ioc	process
File opened (read-only)	\??\f:	rundll32.exe

Drops file in Program Files directory 2 IoCs

Processes:

rundll32.exe

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

Modifies registry class 5 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000_Classes\.quantum\shell\Open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000_Classes\.quantum	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000_Classes\.quantum\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000_Classes\.quantum\shell\Open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000_Classes\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

4360 rundll32.exe
4360 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exe

description pid process

Token: SeRestorePrivilege 4360 rundll32.exe
Token: SeDebugPrivilege 4360 rundll32.exe

pid	process
4360	rundll32.exe
4360	rundll32.exe

description	pid	process
Token: SeRestorePrivilege	4360	rundll32.exe
Token: SeDebugPrivilege	4360	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

rundll32.exerundll32.execmd.exe

description	pid	process	target process
PID 3808 wrote to memory of 4360	3808	rundll32.exe	rundll32.exe
PID 3808 wrote to memory of 4360	3808	rundll32.exe	rundll32.exe
PID 3808 wrote to memory of 4360	3808	rundll32.exe	rundll32.exe
PID 4360 wrote to memory of 3412	4360	rundll32.exe	cmd.exe
PID 4360 wrote to memory of 3412	4360	rundll32.exe	cmd.exe
PID 4360 wrote to memory of 3412	4360	rundll32.exe	cmd.exe
PID 3412 wrote to memory of 2400	3412	cmd.exe	attrib.exe
PID 3412 wrote to memory of 2400	3412	cmd.exe	attrib.exe
PID 3412 wrote to memory of 2400	3412	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

2400 attrib.exe

pid	process
2400	attrib.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2cbb3497bfa28d9966c1feeae96d452d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3808
- 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:4360
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0E577D2F.bat" "C:\Users\Admin\AppData\Local\Temp\2cbb3497bfa28d9966c1feeae96d452d.dll""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3412
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\2cbb3497bfa28d9966c1feeae96d452d.dll"
      4⤵
      Views/modifies file attributes
      PID:2400

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\README_TO_DECRYPT.html

Filesize
2KB

MD5
5ad33fc6eb4dabd77715a95ac400e555

SHA1
9d1895169783943c3c35a87915bf4fb082fa77fd

SHA256
494f123c1c8a878207b26f5660f9be92a34b64d477fe814f05cbc4611d2517be

SHA512
a6dc80747eff2048b70fc03c9889ec0ce7e7859434f30a065f4ec53239064d16e317a15b2e2f3d94dda704c33571986716c161efbb1354fc76bbd1d61b5f925c

Download Submit
C:\Users\Admin\AppData\Local\Temp\0E577D2F.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit
memory/4360-19-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-8-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-4-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-12-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-11-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-9-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-0-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-15-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-3-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-1-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-1125-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-1128-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-1134-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download
memory/4360-2-0x0000000002410000-0x00000000024E1000-memory.dmp

Filesize
836KB

Download