vjw0rm | 670632fdc0765b6ffb85dea661fc69f1e03ac526e19c135e0279d1656c350f93

Analysis

max time kernel
142s
max time network
144s
platform
windows7_x64
resource
win7-en-20211208
submitted
21-12-2021 14:37

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General

Target

ESDAOPMDGJW.js
Size

55KB
MD5

1a2ea3f42fd43a6d0133f11b1c4f3a01
SHA1

dac15bb13bf9336397405bb6d4b8499823b1bf96
SHA256

670632fdc0765b6ffb85dea661fc69f1e03ac526e19c135e0279d1656c350f93
SHA512

cbdf9180fc765d827a732bfbabd1a733d8577b3da7bd33bfc22cba614d162dd502cc21ba932fbfbf662832dd5065f2af183b8f7a774b34405de93372b6768c9c

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 17 IoCs

Processes:

wscript.exe

flow	pid	process
5	956	wscript.exe
6	956	wscript.exe
7	956	wscript.exe
9	956	wscript.exe
10	956	wscript.exe
11	956	wscript.exe
13	956	wscript.exe
14	956	wscript.exe
15	956	wscript.exe
17	956	wscript.exe
18	956	wscript.exe
19	956	wscript.exe
21	956	wscript.exe
22	956	wscript.exe
23	956	wscript.exe
25	956	wscript.exe
26	956	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\ESDAOPMDGJW.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ESDAOPMDGJW.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-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\POXI8QWF6K = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ESDAOPMDGJW.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

1468 schtasks.exe

pid	process
1468	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 956 wrote to memory of 1468	956	wscript.exe	schtasks.exe
PID 956 wrote to memory of 1468	956	wscript.exe	schtasks.exe
PID 956 wrote to memory of 1468	956	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ESDAOPMDGJW.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\ESDAOPMDGJW.js
2⤵
- Creates scheduled task(s)
PID:1468

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/1468-54-0x0000000000000000-mapping.dmp

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