vjw0rm | e67cad373ea8e2db60f4f40422645d2d6dec30a589d56426f86678aed2838ce5

Analysis

max time kernel
149s
max time network
180s
platform
windows7_x64
resource
win7v20210410
submitted
21-07-2021 19:19

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General

Target

Inovice_01.js
Size

5KB
MD5

bb68ffac31a93529e16ad187a8628ec6
SHA1

189155d0c00a2f3225513444b4a5281f5517c256
SHA256

e67cad373ea8e2db60f4f40422645d2d6dec30a589d56426f86678aed2838ce5
SHA512

1e228ba75aed38f165f1c6f661b3a6354bc4d4849aaac3a034c7fb76b4385a79412fff413ca0ce1df9066d6a616264152ca99eb507a2ae4aadeb2ae3f7b89e40

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

6 1036 wscript.exe

flow	pid	process
6	1036	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\Inovice_01.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Inovice_01.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\PAJT6TR2BX = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Inovice_01.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

1660 schtasks.exe

pid	process
1660	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1036 wrote to memory of 1660	1036	wscript.exe	schtasks.exe
PID 1036 wrote to memory of 1660	1036	wscript.exe	schtasks.exe
PID 1036 wrote to memory of 1660	1036	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Inovice_01.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1036

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Inovice_01.js
2⤵
- Creates scheduled task(s)
PID:1660

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/1036-59-0x000007FEFBB41000-0x000007FEFBB43000-memory.dmp

Filesize
8KB

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memory/1660-60-0x0000000000000000-mapping.dmp

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