vjw0rm | 9ef3d03530f8deac1764f12fe8260303fe8a5838e2858999674bf08cf90369e9

General

Target

SOLICITUD_99768674________.pdf.js
Size

207KB
MD5

607e7ae85b834c95db9a85d479751580
SHA1

185d69ebb99a415f47c83936c3a4ae3da12f7aa6
SHA256

9ef3d03530f8deac1764f12fe8260303fe8a5838e2858999674bf08cf90369e9
SHA512

65c5b4c95a5fe4ca6470a5abd6ef4de2f77fc2ed0638f914227190939d92378109216ea772ebf685858550c9d10586a6660642ae30ea26d3c8833e2ea77e2825

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
8	1804	WScript.exe
15	1804	WScript.exe
19	1804	WScript.exe
20	1804	WScript.exe
21	1804	WScript.exe
22	1804	WScript.exe
23	1804	WScript.exe
24	1804	WScript.exe
25	1804	WScript.exe
26	1804	WScript.exe
27	1804	WScript.exe
28	1804	WScript.exe
29	1804	WScript.exe
30	1804	WScript.exe
31	1804	WScript.exe
32	1804	WScript.exe
33	1804	WScript.exe
34	1804	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\CDImfLjZVm.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CDImfLjZVm.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\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\CDImfLjZVm.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

2852 2360 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
2852	2360	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
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe
2852	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 2852 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	2852	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 572 wrote to memory of 1804	572	wscript.exe	WScript.exe
PID 572 wrote to memory of 1804	572	wscript.exe	WScript.exe
PID 572 wrote to memory of 2360	572	wscript.exe	javaw.exe
PID 572 wrote to memory of 2360	572	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\SOLICITUD_99768674________.pdf.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:572

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\CDImfLjZVm.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1804

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\ojsqfpbyij.txt"
2⤵
PID:2360

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2360 -s 352
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2852

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\CDImfLjZVm.js
MD5
3c42714a2658cc70b45e715b97896d61

SHA1
11bdbbe7fe227bf2b06663c4e840c3db2c09200c

SHA256
13a0e50640c3bcfbe873da3a4a6483aabfd48cac75840e6b6c4991beb4468df1

SHA512
c42cff63543040f6c27d2fd69f2d54d9a69f5674ee842890c657cf1dc674fa5b59aa9d7fc7823a6b984a2930a66287b88f1b7ec87d9ea3bc0ccc1408ec798f5a

Download Submit
C:\Users\Admin\AppData\Roaming\ojsqfpbyij.txt
MD5
2e458a59025b390fbdf7d3717314b507

SHA1
d5a84f501bfa81682ebde5e31a68794140141785

SHA256
6b723bd260b53c68c716ef218c78718d3e99ab4d4238a4bd823fd0cd6ec8007b

SHA512
2b463bc4ef98264560abad47053549c463fc9ee098c97cd60d58c959ba67f4ddf2ca60856f6564802a9f056740fbedbb6bdc829388c136c13b334563465d1f22

Download Submit
memory/1804-114-0x0000000000000000-mapping.dmp

Download
memory/2360-116-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads