vjw0rm | ad7abbd37502335bdf4b9d8053e8804b3b4e69085d3756ef4b8353c7eba81422

Analysis

max time kernel
52s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 13:39

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General

Target

1a4ada26cbf28c988746c71f8e1120fe.js
Size

34KB
MD5

1a4ada26cbf28c988746c71f8e1120fe
SHA1

6f4f29e0f1318c3a5f29598d17aad4d4b5d56245
SHA256

ad7abbd37502335bdf4b9d8053e8804b3b4e69085d3756ef4b8353c7eba81422
SHA512

84a23c93399a382f7f8a03d2c25a4860e04e6bbe7641d80ba2011d0135fc6a646fb9c18f94252b96d3e1d7cbd5bc000bea4a2a6b6711e2799e15e51b8de53a9e
SSDEEP

768:IRUodg4NkXEJWWlpwxAbiWkH+qCBhd1FP8WO/m/4tY03l83:Xo6EJWwY+qCp1FP8Wd/6U

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 2 IoCs

flow	pid	Process
14	912	wscript.exe
61	912	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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1a4ada26cbf28c988746c71f8e1120fe.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tUyslWndZh.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tUyslWndZh.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\tUyslWndZh.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3XFVC1CQKY = "\"C:\\Users\\Admin\\AppData\\Roaming\\1a4ada26cbf28c988746c71f8e1120fe.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
1896	schtasks.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 912 wrote to memory of 4336	912	wscript.exe	88
PID 912 wrote to memory of 4336	912	wscript.exe	88
PID 912 wrote to memory of 1896	912	wscript.exe	91
PID 912 wrote to memory of 1896	912	wscript.exe	91

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\1a4ada26cbf28c988746c71f8e1120fe.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:912
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\tUyslWndZh.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:4336
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\1a4ada26cbf28c988746c71f8e1120fe.js
  2⤵
  - Creates scheduled task(s)
  PID:1896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10KB

MD5
6fd5569effaec75b1245767332bbf659

SHA1
a36ee93e4c1c0e58cfb202d41393ece5f08268ae

SHA256
d99932fe34a7261aec97790804e61b6e871e4a2277899689dc9ea8f5024875af

SHA512
c8ac5d88d0e500c1303fac8d9a4c1304d20cf1cfdcf923049bfdddaa93d9eb8ed616c142988760462d7a9a5928b60f173bc8c74f783ffc218df8589cb100b202

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads