vjw0rm | df29cf83fe008627f1475b86bf67530eab0680bc18995786f51719136d079926

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-en-20211208
submitted
16-12-2021 08:20

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General

Target

Scanned_copy.js
Size

3KB
MD5

069760354f3e37200a7112a84aaa3f3b
SHA1

7b55b0e82f004e922f2e886e800e9379c9e09250
SHA256

df29cf83fe008627f1475b86bf67530eab0680bc18995786f51719136d079926
SHA512

e77bc7cd7fbc38da4b9c59bcc1336c9a2e46e040606c8e6db12649cc6e29907ddbd6aa76005e760074ee3b04b6df9b3ac23d33927b41f134a2922ddf759a6d99

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://2ndversionjs.duckdns.org:9100

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

5 1276 wscript.exe

flow	pid	process
5	1276	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\Scanned_copy.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Scanned_copy.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-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\SBFT6OCUB2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Scanned_copy.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

980 schtasks.exe

pid	process
980	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1276 wrote to memory of 980	1276	wscript.exe	schtasks.exe
PID 1276 wrote to memory of 980	1276	wscript.exe	schtasks.exe
PID 1276 wrote to memory of 980	1276	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Scanned_copy.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1276

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Scanned_copy.js
2⤵
- Creates scheduled task(s)
PID:980

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/980-56-0x0000000000000000-mapping.dmp

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memory/1276-55-0x000007FEFB5D1000-0x000007FEFB5D3000-memory.dmp

Filesize
8KB

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