vjw0rm | 66575aff5d619c40d64bf682b4b2cf9ce95362b7ec2a9ff61232815dbc64c5bf

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
13/09/2022, 06:29

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General

Target

DOC_93402390755065443557.PDF.js
Size

11KB
MD5

4cb3bcb5164a630ee1bc20a532338380
SHA1

5fae7ffe7b32d65cd2f5e02bbff284a46aa53f9d
SHA256

66575aff5d619c40d64bf682b4b2cf9ce95362b7ec2a9ff61232815dbc64c5bf
SHA512

a534627daaf91dfc076d1b7ca468350a55bd1bce505d7212e668868ce8c70b9ed93d7ecf4aa995275ad63855165eed41c9bfc196359d296900d445da64317f9f
SSDEEP

192:kN22d0K75ggQW5r4aQZ0yT8BWiYztqdVLlr+ytv7FrzrUxF1jDjiRu2Po9:3E5ggrkaVyT9q56ytv7Fsxvvxqo9

Score

10^/10

vjw0rm trojan worm

Malware Config

Extracted

Family

vjw0rm

http://80.76.51.88:4780

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 1 IoCs

flow	pid	Process
17	1120	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DOC_93402390755065443557.PDF.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DOC_93402390755065443557.PDF.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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 1396	1120	wscript.exe	83
PID 1120 wrote to memory of 1396	1120	wscript.exe	83

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\DOC_93402390755065443557.PDF.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Jsywnwntxj.js"
  2⤵
  PID:1396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Jsywnwntxj.js

Filesize
1KB

MD5
57f61af05c1f5e6e0c38dbdf98f96873

SHA1
717234c5f983c515c2bccebe212ac87d3fe7fea1

SHA256
9d81faf56c5dfa2d6b0cb665d700823f661b69cf77f8b28dc33dc3b54a85026f

SHA512
67dcdf2060494f0d889afa3035e8c2e947a0c9cee2825b1db4fb23d61c29333eeed8f044cba930661511d1e5c257ac9cc7196b7c8de2fd3d89430ec80b500d08

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