vjw0rm | 410a7f406af3ce89f468bec2eefc1de50f424344019a5395d3b9e2d9429d2c94

Analysis

max time kernel
150s
max time network
146s
platform
windows7_x64
resource
win7v20210410
submitted
16-06-2021 13:07

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General

Target

ZXOMHSJOPMA.js
Size

9KB
MD5

e7b6b4fb18ab115e2f55b97830202746
SHA1

9c25aa6c5cce3445c8a08a84e35eece1a2050ab7
SHA256

410a7f406af3ce89f468bec2eefc1de50f424344019a5395d3b9e2d9429d2c94
SHA512

d3434d6c7d6541670b37d3fb516f83fa5b45d432d15f215a9eb8879089e1d7a375a15bdf6bc1d0c8762671ac3d55836f90a5745d2241a95f116f92591bc1c52c

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

21 1268 wscript.exe

flow	pid	process
21	1268	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\ZXOMHSJOPMA.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ZXOMHSJOPMA.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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\VQFSTDUJ0B = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ZXOMHSJOPMA.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

1628 schtasks.exe

pid	process
1628	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1268 wrote to memory of 1628	1268	wscript.exe	schtasks.exe
PID 1268 wrote to memory of 1628	1268	wscript.exe	schtasks.exe
PID 1268 wrote to memory of 1628	1268	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ZXOMHSJOPMA.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1268

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\ZXOMHSJOPMA.js
2⤵
- Creates scheduled task(s)
PID:1628

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

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Downloads

memory/1628-60-0x0000000000000000-mapping.dmp

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