vjw0rm | 6f42ed8f3470aa85f36c0f445793e24d5ad2c7637df440bfe3ebc2816a42f8ba

Analysis

max time kernel
143s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
12/01/2023, 04:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2b0c9059feece8475c71fbbde6cf4963132c274cf7ddebafbf2b0a59523c532e.js
Size

271KB
MD5

56874c0b5d9fe1a62597098be19113cb
SHA1

235b0c6b6ff8c2c667a3aca376e6d09bee039eee
SHA256

2b0c9059feece8475c71fbbde6cf4963132c274cf7ddebafbf2b0a59523c532e
SHA512

a1039448cf03ca10ef9d05cb3ebf418c45e2083964c9a66f7009beb7b36db41a979618813d0abf6cd03dc38c7709bf1aebe9cd11067afad2358a2145da109f2e
SSDEEP

6144:jCPjENIBMqnbvmNETFwauvrb7gOhpFtwWIVyWT:jCPjENI6Cm6zSP9pFKWK

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 15 IoCs

flow	pid	Process
7	5068	WScript.exe
26	5068	WScript.exe
30	5068	WScript.exe
38	5068	WScript.exe
56	5068	WScript.exe
113	5068	WScript.exe
148	5068	WScript.exe
178	5068	WScript.exe
207	5068	WScript.exe
214	5068	WScript.exe
215	5068	WScript.exe
234	5068	WScript.exe
235	5068	WScript.exe
236	5068	WScript.exe
237	5068	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

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

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb	javaw.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-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3208 wrote to memory of 5068	3208	wscript.exe	82
PID 3208 wrote to memory of 5068	3208	wscript.exe	82
PID 3208 wrote to memory of 4032	3208	wscript.exe	83
PID 3208 wrote to memory of 4032	3208	wscript.exe	83

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\2b0c9059feece8475c71fbbde6cf4963132c274cf7ddebafbf2b0a59523c532e.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\KeunXSGcHu.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:5068
- 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\dmesgsmu.txt"
  2⤵
  - Drops file in Program Files directory
  PID:4032

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

Loading Replay Monitor...

Downloads

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

Filesize
34KB

MD5
ec2f8b54b8cfbd39beb6b801a557bf47

SHA1
707d30d858c61d664e5808c1ccc5d7e335d3f6fe

SHA256
d22af6595a12474313f3e4c10300603e57c1cd04d9ebdffee52032a3411d2948

SHA512
49459bc20244d28a2882c6f98de3835bbb25efdaac42888cac0f01dfeca2e2909e447294d9559f9b6c9fa1e4583969d61facd79c0761fd52195f2dc4d3b47bda

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

Filesize
91KB

MD5
19d1b98ca53a49b901f056c6da2478d2

SHA1
c94af0fd581ed91814de3f01be03e42e143493dd

SHA256
0de7b7c82d71f980e5261c40188bafc6d95c484a2bf7007828e93f16d9ae1d9a

SHA512
ae74c208cf339c2831d9b5574826538f9c48766d7a94ec3632569d06ec0306e271eab539bde4cbeeff632f5c2d043b7b64cb25cf575b67b4fddff60e3adaf198

Download Submit
memory/4032-140-0x0000000002720000-0x0000000003720000-memory.dmp

Filesize
16.0MB

Download
memory/4032-157-0x0000000002720000-0x0000000003720000-memory.dmp

Filesize
16.0MB

Download
memory/4032-168-0x0000000002720000-0x0000000003720000-memory.dmp

Filesize
16.0MB

Download
memory/4032-171-0x0000000002720000-0x0000000003720000-memory.dmp

Filesize
16.0MB

Download
memory/4032-172-0x0000000002720000-0x0000000003720000-memory.dmp

Filesize
16.0MB

Download