vjw0rm | 421c6e4dc68b3eb178243788435e0346b78fae06ffa5126c7b95bd222da0f9d9

General

Target

Remittance-634731.js
Size

462KB
MD5

526e79a834bb7c263ee552706e8ca417
SHA1

088706831253c13f4d77a76c3e9c4e85ac15e104
SHA256

421c6e4dc68b3eb178243788435e0346b78fae06ffa5126c7b95bd222da0f9d9
SHA512

8bb57999c72b37b2572c166c46026f53c5746992c0a7019f5aa74651e87bef9042254d031412c458a9542e38f61304756787822ffc4ef2ffcf3bd1ae07ccb59f

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 18 IoCs

Processes:

WScript.exe

flow	pid	process
9	4020	WScript.exe
18	4020	WScript.exe
20	4020	WScript.exe
21	4020	WScript.exe
22	4020	WScript.exe
23	4020	WScript.exe
24	4020	WScript.exe
25	4020	WScript.exe
26	4020	WScript.exe
27	4020	WScript.exe
28	4020	WScript.exe
29	4020	WScript.exe
30	4020	WScript.exe
31	4020	WScript.exe
32	4020	WScript.exe
33	4020	WScript.exe
34	4020	WScript.exe
35	4020	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\RypRJcyXfu.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RypRJcyXfu.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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\0HKX5ALWLG = "\"C:\\Users\\Admin\\AppData\\Roaming\\RypRJcyXfu.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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

640 1880 WerFault.exe javaw.exe
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings wscript.exe

pid	pid_target	process	target process
640	1880	WerFault.exe	javaw.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	wscript.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 640 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	640	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 396 wrote to memory of 4020	396	wscript.exe	WScript.exe
PID 396 wrote to memory of 4020	396	wscript.exe	WScript.exe
PID 396 wrote to memory of 1880	396	wscript.exe	javaw.exe
PID 396 wrote to memory of 1880	396	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Remittance-634731.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:396

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\RypRJcyXfu.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4020

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\pkrzoylle.txt"
2⤵
PID:1880

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1880 -s 352
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:640

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\RypRJcyXfu.js
MD5
1ba12eceb96fcc3f701b57a122d2d619

SHA1
e6760348cbee519d5f6d99f38cce7c4ead6fc9fa

SHA256
f5582ff25d56281b7a5158ff4105d71f6a1453f1f75e4f26a0d82efd2f61160d

SHA512
08a22d4a5642a828ebfdb18c99d20cbaa49ee966cd166f4338a8ddfc17875da3f5bb1feb7ab8a7aab3e2b98adca9d9464b786d7dc8329cad1e52082669b81ed7

Download Submit
C:\Users\Admin\AppData\Roaming\pkrzoylle.txt
MD5
4b04a5e29aeac9bc79a101dc514c33a4

SHA1
57abb8775a1d7642066df1acfb2568d92735f359

SHA256
c327f4e0d967b4560a204eaf5af02c7dc6a1d0989b57a8ce72afc640705170b9

SHA512
b4bf9a4f313b36291673912ae11315cbbf594ee6fe7df62a2e20fb795edb0db0862cdef20e81b391cdead629b11ad24922431766ab00f7810cfb097abae6e442

Download Submit
memory/1880-116-0x0000000000000000-mapping.dmp

Download
memory/4020-114-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads