quantum | 2f1fddcad157ff886106ff2205a3b82291ae2fedd52526da8d0c19684f727021

General

Target

sample.exe
Size

75KB
MD5

97b012d95745c2d4670f90ea81a3167a
SHA1

8ea598b142fb2ca30318b968dc61f912587a5824
SHA256

2fd8356abd42b19799aca857990a5f49631b02bd3253f80d96b5d27dcfd2f7c9
SHA512

6d9b760f7c092fcaf942b67a37cdebe12bce50c0e5badb15cf00f2d10caa0dae8d1c59b4e2e130da55beab200e06fbebf097661c85eb834396e968a6d996a853
SSDEEP

1536:9aX51pVH9hsgNGLs6BLM1frxz/HTfcKKBaJG:OfJGLs6BwNxnfTKsG

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> 7d964f3d2efe012eb21dd419ffdf79c263d3915b69ea856c4df218bdedde1060 </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://obqregdsd7dmilzf3aqvegn3sofpufsvb2n3m2dvwfhsgthemvyi44qd.onion/?cid=7d964f3d2efe012eb21dd419ffdf79c263d3915b69ea856c4df218bdedde1060">http://obqregdsd7dmilzf3aqvegn3sofpufsvb2n3m2dvwfhsgthemvyi44qd.onion/?cid=7d964f3d2efe012eb21dd419ffdf79c263d3915b69ea856c4df218bdedde1060</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>

Extracted

Path

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

Family

quantum

Ransom Note

Your ID: 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. http://obqregdsd7dmilzf3aqvegn3sofpufsvb2n3m2dvwfhsgthemvyi44qd.onion/?cid=7d964f3d2efe012eb21dd419ffdf79c263d3915b69ea856c4df218bdedde1060 Password field should be blank for the first login. Note that this server is available via Tor browser only. P.S. How to get TOR browser - see at https://www.torproject.org

URLs

http://obqregdsd7dmilzf3aqvegn3sofpufsvb2n3m2dvwfhsgthemvyi44qd.onion/?cid=7d964f3d2efe012eb21dd419ffdf79c263d3915b69ea856c4df218bdedde1060

Signatures

Quantum Ransomware
A rebrand of the MountLocker ransomware first seen in August 2021.
ransomware quantum

Modifies extensions of user files 5 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

sample.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\RenameWrite.tiff	sample.exe
File renamed	C:\Users\Admin\Pictures\RenameWrite.tiff => \??\c:\Users\Admin\Pictures\RenameWrite.tiff.quantum	sample.exe
File renamed	C:\Users\Admin\Pictures\ClearConvertFrom.png => \??\c:\Users\Admin\Pictures\ClearConvertFrom.png.quantum	sample.exe
File renamed	C:\Users\Admin\Pictures\ExpandUnregister.tif => \??\c:\Users\Admin\Pictures\ExpandUnregister.tif.quantum	sample.exe
File renamed	C:\Users\Admin\Pictures\PopUnblock.tif => \??\c:\Users\Admin\Pictures\PopUnblock.tif.quantum	sample.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1348 cmd.exe

pid	process
1348	cmd.exe

Drops desktop.ini file(s) 26 IoCs

Processes:

sample.exe

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

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{B27C3A71-B85B-11ED-9F32-72D88D434236} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe

Modifies registry class 5 IoCs

Processes:

sample.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.quantum\shell\Open\command	sample.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.quantum	sample.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.quantum\shell	sample.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.quantum\shell\Open	sample.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	sample.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

sample.exe

pid process

1712 sample.exe
1712 sample.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

sample.exe

description pid process

Token: SeRestorePrivilege 1712 sample.exe
Token: SeDebugPrivilege 1712 sample.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1604 iexplore.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1604 iexplore.exe
1604 iexplore.exe
1924 IEXPLORE.EXE
1924 IEXPLORE.EXE

pid	process
1712	sample.exe
1712	sample.exe

description	pid	process
Token: SeRestorePrivilege	1712	sample.exe
Token: SeDebugPrivilege	1712	sample.exe

pid	process
1604	iexplore.exe

pid	process
1604	iexplore.exe
1604	iexplore.exe
1924	IEXPLORE.EXE
1924	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

sample.execmd.exeiexplore.exe

description	pid	process	target process
PID 1712 wrote to memory of 1348	1712	sample.exe	cmd.exe
PID 1712 wrote to memory of 1348	1712	sample.exe	cmd.exe
PID 1712 wrote to memory of 1348	1712	sample.exe	cmd.exe
PID 1348 wrote to memory of 992	1348	cmd.exe	attrib.exe
PID 1348 wrote to memory of 992	1348	cmd.exe	attrib.exe
PID 1348 wrote to memory of 992	1348	cmd.exe	attrib.exe
PID 1604 wrote to memory of 1924	1604	iexplore.exe	IEXPLORE.EXE
PID 1604 wrote to memory of 1924	1604	iexplore.exe	IEXPLORE.EXE
PID 1604 wrote to memory of 1924	1604	iexplore.exe	IEXPLORE.EXE
PID 1604 wrote to memory of 1924	1604	iexplore.exe	IEXPLORE.EXE

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

992 attrib.exe

pid	process
992	attrib.exe

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
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:1712
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\\006C2EAF.bat" "C:\Users\Admin\AppData\Local\Temp\sample.exe""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1348
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\sample.exe"
    3⤵
    - Views/modifies file attributes
    PID:992

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\README_TO_DECRYPT.html
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1604 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\006C2EAF.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit
C:\Users\Admin\AppData\Local\Temp\006C2EAF.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

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

Filesize
2KB

MD5
a5e11de76e9119941ee94fc96c72b58a

SHA1
70f3836fbb8316bf64237fdb2635e874825be9c6

SHA256
8f0cb2f74705aa3361f034b079f2646624b1f0f6867848356a2ac87897f071b8

SHA512
7a95726913f2ac33ea03aca4c6ea69b76c05d6307386534b751833683dce5ab0baa221917850a0b59238582cbb1ec547d31e9930ef5ec95e6f91465f7c5b0cab

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

Filesize
2KB

MD5
a5e11de76e9119941ee94fc96c72b58a

SHA1
70f3836fbb8316bf64237fdb2635e874825be9c6

SHA256
8f0cb2f74705aa3361f034b079f2646624b1f0f6867848356a2ac87897f071b8

SHA512
7a95726913f2ac33ea03aca4c6ea69b76c05d6307386534b751833683dce5ab0baa221917850a0b59238582cbb1ec547d31e9930ef5ec95e6f91465f7c5b0cab

Download Submit
memory/1604-315-0x0000000002F10000-0x0000000002F20000-memory.dmp

Filesize
64KB

Download
memory/1924-316-0x0000000000350000-0x0000000000352000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads