vjw0rm | c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350

General

Target
c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js
Size 3.1MB
Sample230927-vqqbnaea45
SHA256 c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350
MD5 cf54d832051744f8a17d8883bb0d7579
SHA1 8996b0ea7579eefdc5b143d8e71e00fbabef2749
SHA512 9918d08bdbcec5213e30cc732dbd0705bcc3a7db08090ae8366a57c9cbbb87296861c75eafb6f239deba92711d7cbacd482f2a25dea0ef96545fe00ae0cb40b6
SSDEEP 768:aBLsno5sVaEb33OSp4//6AtsaaiIWVibo1WFti/KaqQh:aBLso5sVaEb3+SAtsaaiBwU1WFyKnO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 18 IoCs

flow	pid	Process
29	1368	wscript.exe
32	2988	wscript.exe
33	1980	wscript.exe
59	1980	wscript.exe
61	1368	wscript.exe
62	2988	wscript.exe
63	1980	wscript.exe
64	1368	wscript.exe
65	2988	wscript.exe
66	1980	wscript.exe
67	1368	wscript.exe
68	2988	wscript.exe
69	1980	wscript.exe
70	1368	wscript.exe
71	2988	wscript.exe
72	1980	wscript.exe
76	1368	wscript.exe
77	2988	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OfYaEGuGdY.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OfYaEGuGdY.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OfYaEGuGdY.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js	wscript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 1368	5052	wscript.exe	89
PID 5052 wrote to memory of 1368	5052	wscript.exe	89
PID 5052 wrote to memory of 1980	5052	wscript.exe	90
PID 5052 wrote to memory of 1980	5052	wscript.exe	90
PID 1980 wrote to memory of 2988	1980	wscript.exe	93
PID 1980 wrote to memory of 2988	1980	wscript.exe	93

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\OfYaEGuGdY.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:1368
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js"
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\OfYaEGuGdY.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:2988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js
Size 3.1MB
SHA256 c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350
MD5 cf54d832051744f8a17d8883bb0d7579
SHA1 8996b0ea7579eefdc5b143d8e71e00fbabef2749
SHA512 9918d08bdbcec5213e30cc732dbd0705bcc3a7db08090ae8366a57c9cbbb87296861c75eafb6f239deba92711d7cbacd482f2a25dea0ef96545fe00ae0cb40b6
SSDEEP 768:aBLsno5sVaEb33OSp4//6AtsaaiIWVibo1WFti/KaqQh:aBLso5sVaEb3+SAtsaaiBwU1WFyKnO
MD5 SHA1 SHA512 SSDEEP

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OfYaEGuGdY.js

Path C:\Users\Admin\AppData\Roaming\OfYaEGuGdY.js
Size 1.1MB
SHA256 06375c4dce8d2215d5f4efcb7f9d4bc2154df82cb49f5b8ad2cde6b662880d2b
MD5 596b02ecc4bc0964ab1a1852fa0a3aa7
SHA1 87ada931135f1d66f3a63c653d6934556421d922
SHA512 5394a397e818eb8d9f2a6c2849a87201bc4a13314a7ae4381658421eb666023d225e29fdda57b999ecd49b0e445026e522f4be843994688fd415d308bc98c885
SSDEEP 96:wDAW3wbDCJ86OzRjyWqnSES7IXE0FnRK8PiVyPvNJMFqMFNONkMUOGcvu0yRh:wDObua6OzQtSEa0SyvMMMjikMUvsyRh
MD5 SHA1 SHA512 SSDEEP

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OfYaEGuGdY.js

Path C:\Users\Admin\AppData\Roaming\OfYaEGuGdY.js
Size 1.1MB
SHA256 06375c4dce8d2215d5f4efcb7f9d4bc2154df82cb49f5b8ad2cde6b662880d2b
MD5 596b02ecc4bc0964ab1a1852fa0a3aa7
SHA1 87ada931135f1d66f3a63c653d6934556421d922
SHA512 5394a397e818eb8d9f2a6c2849a87201bc4a13314a7ae4381658421eb666023d225e29fdda57b999ecd49b0e445026e522f4be843994688fd415d308bc98c885
SSDEEP 96:wDAW3wbDCJ86OzRjyWqnSES7IXE0FnRK8PiVyPvNJMFqMFNONkMUOGcvu0yRh:wDObua6OzQtSEa0SyvMMMjikMUvsyRh
MD5 SHA1 SHA512 SSDEEP

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c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js

Path C:\Users\Admin\AppData\Roaming\c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350_JC.js
Size 3.1MB
SHA256 c98083c89ba696fdc10a9528722e8673f70b0b1872b52fbda472a38d4cfbf350
MD5 cf54d832051744f8a17d8883bb0d7579
SHA1 8996b0ea7579eefdc5b143d8e71e00fbabef2749
SHA512 9918d08bdbcec5213e30cc732dbd0705bcc3a7db08090ae8366a57c9cbbb87296861c75eafb6f239deba92711d7cbacd482f2a25dea0ef96545fe00ae0cb40b6
SSDEEP 768:aBLsno5sVaEb33OSp4//6AtsaaiIWVibo1WFti/KaqQh:aBLso5sVaEb3+SAtsaaiBwU1WFyKnO
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads