vjw0rm | 05c63cde94e8cf070a1d5fe7e1d14cf4e8f37da01274224dcbe67a136a4f8d77

General

Target

7db6d9cd_4B7HWbADGO.js
Size

225KB
MD5

7db6d9cd3eb60b8e7296921e4d8d959e
SHA1

b2bbea5b2f903c83758d2bb31399addcab9a32ad
SHA256

05c63cde94e8cf070a1d5fe7e1d14cf4e8f37da01274224dcbe67a136a4f8d77
SHA512

c42bf22429f2f84cede85e6bdf93ac15a7cd6498086df302b8559575b2aa95bc88ad1da8e73096bd3f10549c5fc8f75c5bdd25b2d08862a1b3a144130e4fb44f

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
7	1720	WScript.exe
8	1720	WScript.exe
9	1720	WScript.exe
11	1720	WScript.exe
12	1720	WScript.exe
13	1720	WScript.exe
15	1720	WScript.exe
16	1720	WScript.exe
17	1720	WScript.exe
19	1720	WScript.exe
20	1720	WScript.exe
21	1720	WScript.exe
23	1720	WScript.exe
24	1720	WScript.exe
25	1720	WScript.exe
27	1720	WScript.exe
28	1720	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\HjFFOyQEiR.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HjFFOyQEiR.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-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\HjFFOyQEiR.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

888 1608 WerFault.exe javaw.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

888 WerFault.exe
888 WerFault.exe
888 WerFault.exe
888 WerFault.exe
888 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

888 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 888 WerFault.exe

pid	pid_target	process	target process
888	1608	WerFault.exe	javaw.exe

pid	process
888	WerFault.exe
888	WerFault.exe
888	WerFault.exe
888	WerFault.exe
888	WerFault.exe

pid	process
888	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	888	WerFault.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

wscript.exejavaw.exe

description	pid	process	target process
PID 1908 wrote to memory of 1720	1908	wscript.exe	WScript.exe
PID 1908 wrote to memory of 1720	1908	wscript.exe	WScript.exe
PID 1908 wrote to memory of 1720	1908	wscript.exe	WScript.exe
PID 1908 wrote to memory of 1608	1908	wscript.exe	javaw.exe
PID 1908 wrote to memory of 1608	1908	wscript.exe	javaw.exe
PID 1908 wrote to memory of 1608	1908	wscript.exe	javaw.exe
PID 1608 wrote to memory of 888	1608	javaw.exe	WerFault.exe
PID 1608 wrote to memory of 888	1608	javaw.exe	WerFault.exe
PID 1608 wrote to memory of 888	1608	javaw.exe	WerFault.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\7db6d9cd_4B7HWbADGO.js
1⤵
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\HjFFOyQEiR.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1720

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\yfhydmue.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:1608

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1608 -s 140
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:888

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\HjFFOyQEiR.js

MD5
25308d3faf2814d521f745a11eddb128

SHA1
c43b46b320a9712d7d2122c0815b4c89197658ad

SHA256
e07beb274f63e2a973e5dd8ba08c7898cfd04a878ed9e582783541ae95c863e5

SHA512
4a8cb10e2c453b168f83e5044d893231c245bbb76a9470bed8817d41daabd6c3fb7be8ae704b58850ac1c3e423668579db0faeac4d79ff1473e0adf2c04c7ae4

Download Submit
C:\Users\Admin\AppData\Roaming\yfhydmue.txt

MD5
d30db43fa4de3d1c86d88199fd218672

SHA1
f87e903271b69f5dc3dc5b1da84dca781a838247

SHA256
e3c140f5c4fa10ef365115cfa71f73b3a503313cf94068365472bb431e91e7e1

SHA512
ba7a5fb9a375a5e1edaf9821d3de2d466a2649cfc4a690170c0c295b7b98fdad9577427a45f6938a7c4ecd827e7554e70175a36f4dfbeb2f7d25f8d22de707ca

Download Submit
memory/888-58-0x0000000000000000-mapping.dmp

Download
memory/888-60-0x0000000001CE0000-0x0000000001CE1000-memory.dmp

Filesize
4KB

Download
memory/1608-55-0x0000000000000000-mapping.dmp

Download
memory/1720-53-0x0000000000000000-mapping.dmp

Download
memory/1908-52-0x000007FEFBD51000-0x000007FEFBD53000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads