vjw0rm | ca4f5e21e40cebc6dcc711b89aa8ec71815bf8eea358768c037fde6dea26bc11

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 03:30

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General

Target

FedEx Shipment.js
Size

25KB
MD5

b5eec680d7588b496a4aa50223bc9714
SHA1

99cc3d44d5c78a39867f72b98a0fb1235b4bcd24
SHA256

259834c6e97251fc59c520e4f0591983cf6b1f414703e0c71b37482f7aea8509
SHA512

9c4218eb3f641fe02e8f4003b4fce928ef10d1d996ec0575bb4d823ca190e2f2b2d2a3cbc3678cdd2b94bfdc2c3d31aa97b144c47f7fcbcaaf0d682441bf74ac
SSDEEP

768:qEX5g9CYn496EkDLGdE743tUdXlfW1E0tAw7GYdTv:qY6w9XUgE749UtlfW1E0tAw7GY1v

Score

10^/10

vjw0rm execution persistence trojan worm

Malware Config

Signatures

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

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-1-5-21-3350944739-639801879-157714471-1000\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\vFSIByLXuN.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vFSIByLXuN.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FedEx Shipment.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\LL63U2MBDU = "\"C:\\Users\\Admin\\AppData\\Roaming\\FedEx Shipment.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\vFSIByLXuN.js\""	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1368	schtasks.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 2980	3164	wscript.exe	83
PID 3164 wrote to memory of 2980	3164	wscript.exe	83
PID 3164 wrote to memory of 1368	3164	wscript.exe	85
PID 3164 wrote to memory of 1368	3164	wscript.exe	85

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\FedEx Shipment.js"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\vFSIByLXuN.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:2980
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\FedEx Shipment.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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\vFSIByLXuN.js

Filesize
7KB

MD5
8939b995e3aec58517b96907da57e3a9

SHA1
4b7ce6924ef5d393fc867c340e7a6c91112fd8ec

SHA256
b4cb814927bab837bea0a60f854a6001a7cfffef34a8104e13832ac3f679e86a

SHA512
d1a2f6d9f0d98105fb15583f42f20e915e02eeb13f207cd18206e5317731fa67485e7bf44d6b8753d4eaaf6e5c3b7f6783b333ee3bd6fa3756164d7b4280b5a6

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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