vjw0rm | 9d4b71f7a7886232ed1977d2c92870637ffc08dba838b20245ad60aeb7d2b102

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 15:03

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General

Target
8ca1ecf268ce85ceb8855ac8e2c55414.jar
Size 123KB
Sample240203-sfar4seeak
SHA256 9d4b71f7a7886232ed1977d2c92870637ffc08dba838b20245ad60aeb7d2b102
MD5 8ca1ecf268ce85ceb8855ac8e2c55414
SHA1 40cb27e69cff3e53a252a9d539fa60314ac4e3a7
SHA512 9ddaebdade5d99b2a12e0753a7dd7f4a81857b8654461bfe2119cade2665f5db33a769788a3d72f2582a20ba7fe736033882cc279c16759a14c025b920130605
SSDEEP 3072:ZLLB9Vo35PRErXjMOKCaOgyeAz1+i1GMcU6A7Auka/:ZvLVo3TYMtZA+HA6Ja/
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-1-5-21-1168293393-3419776239-306423207-1000\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\cTmNhYTLpQ.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cTmNhYTLpQ.js	WScript.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
316	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-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\cTmNhYTLpQ.js\""	WScript.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\jvm.pdb	javaw.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-1-5-21-1168293393-3419776239-306423207-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 316	2360	java.exe	85
PID 2360 wrote to memory of 316	2360	java.exe	85
PID 2360 wrote to memory of 1844	2360	java.exe	87
PID 2360 wrote to memory of 1844	2360	java.exe	87
PID 1844 wrote to memory of 1452	1844	wscript.exe	88
PID 1844 wrote to memory of 1452	1844	wscript.exe	88
PID 1844 wrote to memory of 2576	1844	wscript.exe	90
PID 1844 wrote to memory of 2576	1844	wscript.exe	90

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\8ca1ecf268ce85ceb8855ac8e2c55414.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:2360
- 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:316
- C:\Windows\SYSTEM32\wscript.exe
  wscript C:\Users\Admin\_output.js
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1844
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\cTmNhYTLpQ.js"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    PID:1452
- - 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\niyhvuaacc.txt"
    3⤵
    - Drops file in Program Files directory
    PID:2576

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 c9ce53f698fc987c7d058e689be03814064a6c8343acb93fb535459f62ebca55
MD5 28b06263aec0f70d1aae1449e8ca5cbd
SHA1 fde96b7e14bed5ca334f2289a9521181310d9d6e
SHA512 9c8877b79ce7e8bc6f50606952be8e2d461e1856fa4a1d5eccf9595a8c106129474a7f410f86ac05fe66a79e7db2a27fc39caa11125bdc4ebf3febbb89aaeb62
MD5 SHA1 SHA512

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cTmNhYTLpQ.js

Path C:\Users\Admin\AppData\Roaming\cTmNhYTLpQ.js
Size 9KB
SHA256 a0468409b7c7800ce0b1df997097525357bb2b93686afba5e5f82dd03667c00c
MD5 685b1b2952c8efe8584d692840416ebb
SHA1 d52696d12e7aa7b5c3757bfc0d524e11a527edba
SHA512 7b173df0ef8b2045f65980e2ea657a544551b4809eb6d82b5eed829e5858fab4966e500912f193d2a6382974f2d1c775a93454f562a6a826d6a191dec7f39868
SSDEEP 192:1UrQ0rOigSKwdkLXcnJAJS63zKdeHHRhWtcJFCCyijuIb:oUSekJa3W8xhkS
MD5 SHA1 SHA512 SSDEEP

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niyhvuaacc.txt

Path C:\Users\Admin\AppData\Roaming\niyhvuaacc.txt
Size 88KB
SHA256 ba97fd311dcae06ced279a1a5503252c7c0986a28e4168f0f96b4afcbcb7f79b
MD5 468ec549c270898563a0d61e42a3bd17
SHA1 6bbd046226d2a87abd4e24d9831e029d97f5e0c7
SHA512 e9071cd00f5c12810e08655f9dedd740fa3052132467a1596056d986a505d980fde4a0bac0d9ff573b630fd0c5b4aeec05b878bd3d05c549e9745fe26dbc8039
SSDEEP 1536:TQPYoeZSzJKjInhIw7y2HknWVFXUvMfUt8mNksHuocuO8WNTgX:ToreWPXWMfUKXFuO8WN4
MD5 SHA1 SHA512 SSDEEP

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_output.js

Path C:\Users\Admin\_output.js
Size 195KB
SHA256 019a6c3f10ef4440d4c08462eaca4acca8f58e16bc375c0483336368bc919457
MD5 9e872de7115891e5eea6c64be9164ad9
SHA1 c279eb494fbf5cd0a398fb02c4b10e8728b4198b
SHA512 b9d651f7f4bc7edbd4f66c0acad209bcbc3268a648a02cff5b19b5f30eafe2c6e1ade7ce617f4b16433585cf3aa3f13a25f665a7541371af0e587c2a472453db
SSDEEP 3072:WY+n3QxmgBp64aCMyf1m67IYGP8RLI/VvsY4h34VruWwuUwWrFPv5:63y7Meh7gP3uTh34VrhwuVWrFPv5
MD5 SHA1 SHA512 SSDEEP

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memory/2360-4-0x000001FD54A80000-0x000001FD55A80000-memory.dmp

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memory/2360-14-0x000001FD54A60000-0x000001FD54A61000-memory.dmp

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memory/2576-39-0x000002AA36310000-0x000002AA37310000-memory.dmp

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memory/2576-33-0x000002AA362F0000-0x000002AA362F1000-memory.dmp

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memory/2576-30-0x000002AA36310000-0x000002AA37310000-memory.dmp

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memory/2576-44-0x000002AA362F0000-0x000002AA362F1000-memory.dmp

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memory/2576-48-0x000002AA365A0000-0x000002AA365B0000-memory.dmp

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memory/2576-47-0x000002AA36590000-0x000002AA365A0000-memory.dmp

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memory/2576-49-0x000002AA365B0000-0x000002AA365C0000-memory.dmp

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memory/2576-50-0x000002AA365D0000-0x000002AA365E0000-memory.dmp

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memory/2576-51-0x000002AA365E0000-0x000002AA365F0000-memory.dmp

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memory/2576-52-0x000002AA36310000-0x000002AA37310000-memory.dmp

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memory/2576-53-0x000002AA36310000-0x000002AA37310000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads