vjw0rm | 49de1486da8e0260248822d29129e3bf73ba3db8d94fb933571ab020934626f5

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-en-20211104
submitted
15/11/2021, 21:28

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General

Target
#BS0932MTANS622.js
Size 64KB
Sample211115-1bty7agebr
SHA256 ca65bd6a5fc3f9263908d87b4fd4dd70e1f1f83c67c3ea740132595a40dd6c52
MD5 4c58f749583af215176df06d6e92586b
SHA1 924a37a2d50d9c13378c67713071f6f9f7d439bc
SHA512 a5dd1e1b4f1b76e24fb238858b4c9f255e478621b2cfcab89411e7211711a27be4d6589399d18ac784ed6bc7a139ddfb1f6da1bb982240fcc5fe631077a0165b
MD5 SHA1 SHA512

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://13.92.159.78:6430

Signatures

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	320	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#BS0932MTANS622.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#BS0932MTANS622.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run\6APWATPSUN = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#BS0932MTANS622.js\""	wscript.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
436	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 320 wrote to memory of 436	320	wscript.exe	29
PID 320 wrote to memory of 436	320	wscript.exe	29
PID 320 wrote to memory of 436	320	wscript.exe	29

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\#BS0932MTANS622.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:320
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#BS0932MTANS622.js
  2⤵
  - Creates scheduled task(s)
  PID:436

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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