vjw0rm | a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
26-02-2024 21:53

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General

Target

a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09.js
Size

82KB
MD5

7929c97ce63fe3cdacfc7352dc166de4
SHA1

01ba4443631259f15e9b699a1bb5da740ac2db5b
SHA256

a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09
SHA512

8785c0a0b54965d7e1d8f7936c9d7c0be72a1947f83821620b76428917cdbf0895d1de508262eb0f97743b82c5d989da45573faeffd0be207c854f27de18733e
SSDEEP

1536:Ys0U6gprfN7+KvoGAoQ2CdLzbYaaPFIs8Ja1cu:YI6Art+z3LkaA1

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 6 IoCs

flow	pid	Process
6	1660	wscript.exe
15	1660	wscript.exe
22	1660	wscript.exe
29	1660	wscript.exe
35	1660	wscript.exe
42	1660	wscript.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XxWHiUfsIt.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XxWHiUfsIt.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09.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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\XxWHiUfsIt.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\QMKYOV5VW3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09.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
2712	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 2532	1660	wscript.exe	28
PID 1660 wrote to memory of 2532	1660	wscript.exe	28
PID 1660 wrote to memory of 2532	1660	wscript.exe	28
PID 1660 wrote to memory of 2712	1660	wscript.exe	30
PID 1660 wrote to memory of 2712	1660	wscript.exe	30
PID 1660 wrote to memory of 2712	1660	wscript.exe	30

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\a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\XxWHiUfsIt.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:2532
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\a4668c29be9951320ab96983772a7ca6819e9c511502243ac8543b1879d6ed09.js
  2⤵
  - Creates scheduled task(s)
  PID:2712

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\XxWHiUfsIt.js

Filesize
29KB

MD5
f62b59edbb6e670d81c15130a915e2b1

SHA1
d4c4e5970208baaef7b5def3c6a498bdf22a0020

SHA256
c0d33f59aec9f2ed5a83b75f7f54e370ce8ba97e9575bd45d3cfe32631ecab18

SHA512
5ca9ead9f4c5b6404d09fe9185fd53e50e3c03ce4a62229cef851c605005aef8d83b48bf8403c26f6d7bb71fec2c7b387e341c70d8d4243b6bf6d532e3ed2baa

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads