vjw0rm | ba43508418c1890886dd6c68e7dc0d0a8291c147c3919147d0ba89b29e427566

General

Target

2021_11_17_AB2106159.js
Size

272KB
MD5

1fa10808ee55f1de160b3628fde35526
SHA1

5422d9396f3b782fc88dfba492a51560a9e98275
SHA256

ba43508418c1890886dd6c68e7dc0d0a8291c147c3919147d0ba89b29e427566
SHA512

ed6e4c317560165f13dfdaf7839a187c38e2e67255753e11f5c3f090a595a44991a2394210439ad9554e3f501ab12621413b44409ea5d348fbaa0533abba565b

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 17 IoCs

Processes:

WScript.exe

flow	pid	process
9	4460	WScript.exe
10	4460	WScript.exe
21	4460	WScript.exe
26	4460	WScript.exe
27	4460	WScript.exe
28	4460	WScript.exe
31	4460	WScript.exe
32	4460	WScript.exe
33	4460	WScript.exe
34	4460	WScript.exe
35	4460	WScript.exe
36	4460	WScript.exe
37	4460	WScript.exe
38	4460	WScript.exe
39	4460	WScript.exe
40	4460	WScript.exe
41	4460	WScript.exe

Drops startup file 2 IoCs

Processes:

WScript.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WScript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\xRYuhuOAyv.js\""	WScript.exe

Drops file in Program Files directory 12 IoCs

Processes:

javaw.exe

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\symbols\dll\jvm.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\server\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\server\ntdll.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\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

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

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4312 wrote to memory of 4460	4312	wscript.exe	WScript.exe
PID 4312 wrote to memory of 4460	4312	wscript.exe	WScript.exe
PID 4312 wrote to memory of 4452	4312	wscript.exe	javaw.exe
PID 4312 wrote to memory of 4452	4312	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\2021_11_17_AB2106159.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4312

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\xRYuhuOAyv.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4460

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\azidrmvop.txt"
2⤵
- Drops file in Program Files directory
PID:4452

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\azidrmvop.txt
MD5
e5c57969a139fa14269758cb8cc8f9a7

SHA1
432f65c2b1da28b421eac3956d8cefd72f04ae6a

SHA256
b2b661ff89ba10a5a27a06df63a9ffd158b254aff5f38a96ff5c1f6344959501

SHA512
526f7f1717488c87457353d78480ec590d5abf5bf6bdc697dc92433c26a949c649b94bd83cfc7891c24fbc5e96414793fb9a192f77a3ded9ad434d8524a215d5

Download Submit
C:\Users\Admin\AppData\Roaming\xRYuhuOAyv.js
MD5
77003839125047ffd125864a341da2c8

SHA1
fc0f65ee6753d601c81ca684516d59366e123022

SHA256
663031fd5b14f95adef162804c059269979693700b14a7a551d28bde04298372

SHA512
9c90e748b94ed8d7fc65f80470df44fbcc1c3d0068232a9fd25b87bcecce48b54de17ac226db416173e5f8b6538695b67a0b9e8e876a5da44393557c0ffcbaad

Download Submit
memory/4452-121-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download
memory/4452-117-0x0000000000000000-mapping.dmp

Download
memory/4452-119-0x0000000002A30000-0x0000000002CA0000-memory.dmp

Filesize
2.4MB

Download
memory/4452-120-0x0000000002A30000-0x0000000002CA0000-memory.dmp

Filesize
2.4MB

Download
memory/4452-123-0x0000000002CA0000-0x0000000002CB0000-memory.dmp

Filesize
64KB

Download
memory/4452-126-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download
memory/4452-127-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download
memory/4452-128-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

Filesize
64KB

Download
memory/4452-129-0x0000000002CC0000-0x0000000002CD0000-memory.dmp

Filesize
64KB

Download
memory/4452-130-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/4452-132-0x0000000002CE0000-0x0000000002CF0000-memory.dmp

Filesize
64KB

Download
memory/4460-115-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads