vjw0rm | 1204d1db36163eef881e0e2293c27fa3b83f036e1c5f8b9f39eee6de138b8752

Analysis

max time kernel
147s
max time network
149s
platform
windows10_x64
resource
win10v20210408
submitted
06-10-2021 18:55

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General

Target

INTERAC Service Request9466544665440.js
Size

3KB
MD5

82ccbb5d83d342bf2a38081b98b1704d
SHA1

7b72886e685c44f752a72826c315f86dee81251f
SHA256

1204d1db36163eef881e0e2293c27fa3b83f036e1c5f8b9f39eee6de138b8752
SHA512

05d9ed5a6499d4bd920f27d5e750874fdd812811117ce2fd4fbc4587a5f3121bf9d6b5f512c345c1cfa02ccad94c098758570b7c1d4dd173de60a093abd921a9

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 1 IoCs

Processes:

wscript.exe

flow pid process

2 740 wscript.exe

flow	pid	process
2	740	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\INTERAC Service Request9466544665440.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\INTERAC Service Request9466544665440.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\IFOPY6H4EL = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\INTERAC Service Request9466544665440.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

Processes:

schtasks.exe

pid process

368 schtasks.exe
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description pid process target process

PID 740 wrote to memory of 368 740 wscript.exe schtasks.exe
PID 740 wrote to memory of 368 740 wscript.exe schtasks.exe

pid	process
368	schtasks.exe

description	pid	process	target process
PID 740 wrote to memory of 368	740	wscript.exe	schtasks.exe
PID 740 wrote to memory of 368	740	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\INTERAC Service Request9466544665440.js"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:740

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\INTERAC Service Request9466544665440.js
2⤵
- Creates scheduled task(s)
PID:368

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/368-114-0x0000000000000000-mapping.dmp

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