vjw0rm | 0ddfa19149e6fe2a1a8357b7019d5c2debcea3d5abd6739c0a9c16a989785a4a

Analysis

max time kernel
148s
max time network
148s
platform
windows10_x64
resource
win10v20210408
submitted
07-05-2021 15:02

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General

Target

Invoice.js
Size

3KB
MD5

29805cb77711c2d3ce8f364ade7996d6
SHA1

d22674b1971799ed5c5cbc54fd5b14de98ac1d96
SHA256

0ddfa19149e6fe2a1a8357b7019d5c2debcea3d5abd6739c0a9c16a989785a4a
SHA512

6b9ad6d698de973e6592144a0dc7d692525d9fcbb3a12cdcd4645d3c3b64863f1831bbea50300b76595ee6e6a5129738dedfd9bef6e3c93d23b9958fd82fbd3a

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

8 64 wscript.exe

flow	pid	process
8	64	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Invoice.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Invoice.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\5NJ8WG0CSO = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Invoice.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

2036 schtasks.exe
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description pid process target process

PID 64 wrote to memory of 2036 64 wscript.exe schtasks.exe
PID 64 wrote to memory of 2036 64 wscript.exe schtasks.exe

pid	process
2036	schtasks.exe

description	pid	process	target process
PID 64 wrote to memory of 2036	64	wscript.exe	schtasks.exe
PID 64 wrote to memory of 2036	64	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Invoice.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:64

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Invoice.js
2⤵
- Creates scheduled task(s)
PID:2036

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/2036-114-0x0000000000000000-mapping.dmp

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