vjw0rm | a8c0236c98449cbca8097ca4923fe0b5b878944796e240f64595fc85b99092e4

Analysis

max time kernel
141s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
26-03-2023 09:44

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General

Target

c72d738747f68d4f8d9e9368e47928bf.js
Size

9.2MB
MD5

c72d738747f68d4f8d9e9368e47928bf
SHA1

00b523b2e3ab0f2bfd7d4aabf3b1c33ae390c585
SHA256

06b94b3ec86bd4a61888848f379808954de1ff2a1fe471edcfa312f5e9ba2ab5
SHA512

1a01baa0c813b928cf5dfe456f76acdcf9be0e0df8a6131e248f9aa5456c65a69cb9809efe56afc4db32cfeeb93ca42e3319f1e53689ba4ed23b77911b802c61
SSDEEP

3072:gNK8RjR/R8x/xqm2O1IrWa7Mjv/GnOv3GmPLjCKKIz9vs2J96i/OBDVOdz83Pm7+:I

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 2 IoCs

flow	pid	Process
9	2800	WScript.exe
47	2800	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-1-5-21-144354903-2550862337-1367551827-1000\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\oUvEoxxwKv.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oUvEoxxwKv.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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 2800	4980	wscript.exe	84
PID 4980 wrote to memory of 2800	4980	wscript.exe	84
PID 4980 wrote to memory of 4376	4980	wscript.exe	85
PID 4980 wrote to memory of 4376	4980	wscript.exe	85

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\c72d738747f68d4f8d9e9368e47928bf.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\oUvEoxxwKv.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:2800
- C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
  "C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\rodmr.txt"
  2⤵
  PID:4376

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\oUvEoxxwKv.js

Filesize
1.1MB

MD5
b7e9c8bac9afc434944605c2422e1ad0

SHA1
a653b478be92ecbd848bf79e175c454ebb9ccf21

SHA256
be481241ae35aed859e1b558e23fcf640e0ec5f36d1e993a085ccc499b62c465

SHA512
b790f27cce05ee3c754728489c8912501dc5c61d00639db760957697e3ea28855a81ce38634ddf2d98bf865055977c4d5dd2faaecc3a625eb090012161df2190

Download Submit
C:\Users\Admin\AppData\Roaming\rodmr.txt

Filesize
164KB

MD5
ec5e12b3ea2318692c2d2b74c33dfbda

SHA1
f7f6c3d3e266c7a85ec489389d5508eaa1983055

SHA256
056579d3948044c01ffa21dd8a14f7c4109efd25e609055e24a37cb6db603ef7

SHA512
0c91246971bb23ba3801b348ca8148c048de43c4caa7912b681868e471f5a0f080f2969e8fda1b04a002a81b403bddb22b62496b8eee75814cb691391ad5851a

Download Submit
memory/4376-150-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-170-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-177-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-178-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-185-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-192-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-193-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-196-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-197-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-204-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4376-206-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download