quantum | b3da47207fbc6087f87f5d09aea32be664e399b0328bc05e520cb4ef567fb994

General

Target

sample.dll
Size

365KB
MD5

4401c2782092881cd54018f1381b1521
SHA1

8e96e2c9f1ade2a762c839e5dd6d2c6beb576363
SHA256

6606dac5b89e76be4d85a85bdd8cb5f6c13c0fc887a3c0072d064713932a23f4
SHA512

4c383a6901ba719fd15d56ba6b40f1cd0dc5f2e20eae9cadd2d477f8f16262a0f8fca3a4ca20227a02d5eb086a774ba0783b3dcaf019bbe09ff21a3182b2b0d9
SSDEEP

6144:Rtht/U8T6AOHdt8lIJASVO30UFimXNxtipVO30UFimXNxtiH:/wValD/30Wietia30Wieti

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> 207aa5c60e08117ba86c113b3ff9e2987f2ec1b61ddbbc60799ece0677a89f46 </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=207aa5c60e08117ba86c113b3ff9e2987f2ec1b61ddbbc60799ece0677a89f46">http://obqregdsd7dmilzf3aqvegn3sofpufsvb2n3m2dvwfhsgthemvyi44qd.onion/?cid=207aa5c60e08117ba86c113b3ff9e2987f2ec1b61ddbbc60799ece0677a89f46</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=207aa5c60e08117ba86c113b3ff9e2987f2ec1b61ddbbc60799ece0677a89f46 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=207aa5c60e08117ba86c113b3ff9e2987f2ec1b61ddbbc60799ece0677a89f46

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

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\CopyFormat.crw => \??\c:\Users\Admin\Pictures\CopyFormat.crw.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\HideNew.raw => \??\c:\Users\Admin\Pictures\HideNew.raw.quantum	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\SyncPush.tiff	rundll32.exe
File renamed	C:\Users\Admin\Pictures\SyncPush.tiff => \??\c:\Users\Admin\Pictures\SyncPush.tiff.quantum	rundll32.exe
File renamed	C:\Users\Admin\Pictures\UninstallMerge.raw => \??\c:\Users\Admin\Pictures\UninstallMerge.raw.quantum	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1044	cmd.exe

Drops desktop.ini file(s) 26 IoCs

description	ioc	Process
File opened for modification	\??\c:\Users\Public\Videos\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\Searches\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\Saved Games\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\Pictures\Sample Pictures\desktop.ini	rundll32.exe
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\Public\Recorded TV\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\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Music\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Links\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Downloads\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Videos\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\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\Admin\Desktop\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Documents\desktop.ini	rundll32.exe
File opened for modification	\??\c:\Users\Public\Videos\Sample Videos\desktop.ini	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{FA249481-B84C-11ED-9640-D2C9D0B8F522} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\.quantum\shell\Open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\.quantum	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\.quantum\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\.quantum\shell\Open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\.quantum\shell\Open\command\ = "explorer.exe README_TO_DECRYPT.html"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1088	rundll32.exe
1088	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	1088	rundll32.exe
Token: SeDebugPrivilege	1088	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1172	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1172	iexplore.exe
1172	iexplore.exe
964	IEXPLORE.EXE
964	IEXPLORE.EXE
964	IEXPLORE.EXE
964	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 1044	1088	rundll32.exe	29
PID 1088 wrote to memory of 1044	1088	rundll32.exe	29
PID 1088 wrote to memory of 1044	1088	rundll32.exe	29
PID 1044 wrote to memory of 2000	1044	cmd.exe	31
PID 1044 wrote to memory of 2000	1044	cmd.exe	31
PID 1044 wrote to memory of 2000	1044	cmd.exe	31
PID 1172 wrote to memory of 964	1172	iexplore.exe	34
PID 1172 wrote to memory of 964	1172	iexplore.exe	34
PID 1172 wrote to memory of 964	1172	iexplore.exe	34
PID 1172 wrote to memory of 964	1172	iexplore.exe	34

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2000	attrib.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\sample.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:1088
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\\006C2CFB.bat" """
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1044
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h ""
    3⤵
    - Views/modifies file attributes
    PID:2000

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:1172
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1172 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:964

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

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Downloads

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

Filesize
67KB

MD5
90967ee52ea40e331f71f08d20000ce9

SHA1
7076957f00ecdfccf91c9d3f9eec08ad1a7de36e

SHA256
9bbd6b1ad0a49c6c005743c9a290df95697820f0a120ef2afa252c5dd540f47b

SHA512
4f0e3593ef9ec19436640d736ccd5de258a06a15fd84a471a74f80ef7a15aa90e5b7254c167db1023d31d2de4b44bb4a35c597c5dd9b927556be251242fe3123

Download Submit
C:\Users\Admin\AppData\Local\Temp\006C2CFB.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

Download Submit
C:\Users\Admin\AppData\Local\Temp\006C2CFB.bat

Filesize
65B

MD5
348cae913e496198548854f5ff2f6d1e

SHA1
a07655b9020205bd47084afd62a8bb22b48c0cdc

SHA256
c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506

SHA512
799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611

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

Filesize
2KB

MD5
9550cbefd1083fb8014225d1b9594a51

SHA1
953f117034039caed594b4c951903224d0d3fcd5

SHA256
facb0eb6696ab5c91dd35398099836baa3a6aa4ecbf93ba66466287fa7e6c2f8

SHA512
a350e587f48efacaaef9bf21c3d5394cb265dadd096f618125bf29552d4653fbe2fc6a84ed20d8c3287d0462c78c6e66acd58826f449b45831e0b43ee6fd7d91

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

Filesize
2KB

MD5
9550cbefd1083fb8014225d1b9594a51

SHA1
953f117034039caed594b4c951903224d0d3fcd5

SHA256
facb0eb6696ab5c91dd35398099836baa3a6aa4ecbf93ba66466287fa7e6c2f8

SHA512
a350e587f48efacaaef9bf21c3d5394cb265dadd096f618125bf29552d4653fbe2fc6a84ed20d8c3287d0462c78c6e66acd58826f449b45831e0b43ee6fd7d91

Download Submit
memory/964-330-0x0000000002D30000-0x0000000002D32000-memory.dmp

Filesize
8KB

Download
memory/1088-54-0x0000010180000000-0x0000010180018000-memory.dmp

Filesize
96KB

Download
memory/1088-61-0x0000000180000000-0x0000000180063000-memory.dmp

Filesize
396KB

Download
memory/1088-326-0x0000000180000000-0x0000000180063000-memory.dmp

Filesize
396KB

Download
memory/1172-329-0x00000000026D0000-0x00000000026E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads