vjw0rm | 62bca662223a0017baef72c972f7a626e527b1aae6794461851a47533ad38825

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
06/02/2024, 21:46

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General

Target
958b76889b6838f35a81e5a67f2e58f5.jar
Size 128KB
Sample240206-1mskhahaf9
SHA256 62bca662223a0017baef72c972f7a626e527b1aae6794461851a47533ad38825
MD5 958b76889b6838f35a81e5a67f2e58f5
SHA1 aad0e3fa3460df2e1466048ddf172b0208b16789
SHA512 fb7a709f7457e64b4470c030bde5d942b342273809ae4b4ea4eca1b14a86d7b3bbd0b533e6e1979bf2360a12ebb75d961a90fc056ff02f1536fd00b295963bdc
SSDEEP 3072:bp2hBCNHl4WbH3dN3HEVy0091wNyY9sjtnHqwFXVbaA5faS0c:bp2vCNHTD8F0n3ljxHqyghY
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

vjw0rm discovery persistence trojan worm

Malware Config

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm 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-1-5-21-3791175113-1062217823-1177695025-1000\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\TrvKczAWPy.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TrvKczAWPy.js	WScript.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
5068	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\TrvKczAWPy.js\""	WScript.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 5068	4500	java.exe	85
PID 4500 wrote to memory of 5068	4500	java.exe	85
PID 4500 wrote to memory of 4816	4500	java.exe	87
PID 4500 wrote to memory of 4816	4500	java.exe	87
PID 4816 wrote to memory of 1124	4816	wscript.exe	88
PID 4816 wrote to memory of 1124	4816	wscript.exe	88
PID 4816 wrote to memory of 2604	4816	wscript.exe	89
PID 4816 wrote to memory of 2604	4816	wscript.exe	89

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\958b76889b6838f35a81e5a67f2e58f5.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:4500
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:5068
- C:\Windows\SYSTEM32\wscript.exe
  wscript C:\Users\Admin\[output].js
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4816
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\TrvKczAWPy.js"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    PID:1124
- - C:\Program Files\Java\jre-1.8\bin\javaw.exe
    "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\umrlweufq.txt"
    3⤵
    PID:2604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

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

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 b86462b9b69db06e7e63a91b8b8c6446e2eaaca3e5fc3ebe0472a4104b188f8a
MD5 c608b5dcf7f2565ebb63974a3bcecac2
SHA1 2fc0a0ab9fa89b7f1f31d2bd74b61b5f9bb65eba
SHA512 da8169b7c68c81ec3dbde80d7a197a3a2e9d64211153e89206e359a2cc111681c84dfc80c72f8acc84010451f57acf9ebcc047f63a0628d947882352472c30fb
MD5 SHA1 SHA512

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TrvKczAWPy.js

Path C:\Users\Admin\AppData\Roaming\TrvKczAWPy.js
Size 9KB
SHA256 5929e5fe4b3864ee6d9218b91dd88ca9f8a30a235d3a42ee587d3a1f8ef68a6f
MD5 cf858266b13ee357cf8f5f5e12151885
SHA1 7a460ee3ad3c7b42c98676a39412ba5245fa8757
SHA512 69075ef84e7ec1ee05faa059d67dd1ce7439e886c83fbb9572858b6a4051cdab96212a0544260fd2a3d257534908e17c46c480c96b455686b133b9a565e09058
SSDEEP 192:VoRQOOicPEkL8AuJcIDEqj0O8vRLcJVdnyiea92Hqb:bwlJwqjaZA320
MD5 SHA1 SHA512 SSDEEP

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umrlweufq.txt

Path C:\Users\Admin\AppData\Roaming\umrlweufq.txt
Size 92KB
SHA256 7d14c63974afd53f32e6b5b5d22f0e0e6d49e4a04b67b4670ebeaf8c2a658b64
MD5 3e93005e30804f380c9c3fb392c32e4d
SHA1 68b3a053276a14c8059d58eab447927868f2f785
SHA512 307f8de410b15e2f28740bf776d27c201d9eebd2a5936757becddfb31ed9724f2ab866bdeac0ddd5184aa91457a276379a0a08fb24830df57d854e5c450fd129
SSDEEP 1536:/od/w1AfuP1I9Qu1+j3xcMinGSNPsr/C0BpLLWjmTycGheLqZHGvNvxsptHrPN0H:gdNfuP18QXjYGkP2/LB9LWCT9LqgvcLM
MD5 SHA1 SHA512 SSDEEP

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[output].js

Path C:\Users\Admin\[output].js
Size 202KB
SHA256 330d4d4c03364842209ab162eabb72fc9e5aa9c0b7271bd83599cb27f492601c
MD5 37c0373548f1334764a0fe139bc4b0e4
SHA1 bea7360b7252701f1a1411d7a84c9ac631267559
SHA512 bdcd45ccdf92966b5733f286a4608dfb3fc4566715045e80a92edebbf827db3994a91176e8f1945785c0af9d103259c192ae44561fe0c8d5c0286c62c2b0b4e3
SSDEEP 3072:kbH2QdessMSnPtHbh42rOYXt5+E2G/UE0Wvidfbwta+sYL8e+FX6HVmgSRn7dKI7:f11HV9OYXtMyH0WCD6a+PYBKI+4jN5lF
MD5 SHA1 SHA512 SSDEEP

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memory/2604-52-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-73-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-27-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-38-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-40-0x00000213E4A30000-0x00000213E4A31000-memory.dmp

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memory/2604-51-0x00000213E4A30000-0x00000213E4A31000-memory.dmp

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memory/2604-174-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-66-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-71-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-173-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-75-0x00000213E4A30000-0x00000213E4A31000-memory.dmp

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memory/2604-100-0x00000213E4A30000-0x00000213E4A31000-memory.dmp

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memory/2604-105-0x00000213E4A30000-0x00000213E4A31000-memory.dmp

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memory/2604-171-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/2604-172-0x00000213E6290000-0x00000213E7290000-memory.dmp

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memory/4500-14-0x0000021993AF0000-0x0000021993AF1000-memory.dmp

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memory/4500-4-0x00000219953B0000-0x00000219963B0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads