vjw0rm | 2c8240a9a4d78a127b0fa7d019793a56b44aaef4be64525fbb1d76b534b0e7e0

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14-03-2024 12:33

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General

Target

c8a00e03b928e8d47433f73999d280f4.js
Size

38KB
MD5

c8a00e03b928e8d47433f73999d280f4
SHA1

3850009b8ad2c4957273f8c41555403c5aa502f5
SHA256

2c8240a9a4d78a127b0fa7d019793a56b44aaef4be64525fbb1d76b534b0e7e0
SHA512

5515a37e611d3a1666779ac85acce98323e9f7907722e58a9cca131d85e6a9afc18291f2505fe618e1e745cec004575ae8a8fe3e086fa2b97a40485fd9ee557a
SSDEEP

96:XE7DClCtcROHcRb+UfL7MHU+d3e74XkDCqs00AKp07llhIx07l49Unf66NGMefYU:pQ0FixS9kgT9y

Score

10^/10

vjw0rm trojan worm

Malware Config

Signatures

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

Blocklisted process makes network request 13 IoCs

flow	pid	Process
2	552	wscript.exe
23	552	wscript.exe
30	552	wscript.exe
44	552	wscript.exe
45	552	wscript.exe
46	552	wscript.exe
52	552	wscript.exe
58	552	wscript.exe
59	552	wscript.exe
72	552	wscript.exe
73	552	wscript.exe
74	552	wscript.exe
83	552	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c8a00e03b928e8d47433f73999d280f4.js	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job

T1053

pid	Process
4432	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 552 wrote to memory of 4432	552	wscript.exe	95
PID 552 wrote to memory of 4432	552	wscript.exe	95

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\c8a00e03b928e8d47433f73999d280f4.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:552
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\c8a00e03b928e8d47433f73999d280f4.js
  2⤵
  - Creates scheduled task(s)
  PID:4432

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1424 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:4904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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