vjw0rm | 1e4b0b6254e8f64254e54a9b587c58b1b315d3778f2f359c1e2fa8a5eedf2832

General

Target

29e6358d_aGAuLITv8n.js
Size

231KB
MD5

29e6358dcc6c6518ff978ed2e06a097f
SHA1

963d7a5020461bf138b723518c4b606599ad18b4
SHA256

1e4b0b6254e8f64254e54a9b587c58b1b315d3778f2f359c1e2fa8a5eedf2832
SHA512

25310412f2e6b727cc990a17a6c6435a5c2380245beeae7fdfe45748bb7858d48910da032bf277322b7639bfb49c247f066aa3030758b344eb4403f88a9e4c62

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	3936	WScript.exe
18	3936	WScript.exe
19	3936	WScript.exe
20	3936	WScript.exe
21	3936	WScript.exe
22	3936	WScript.exe
23	3936	WScript.exe
24	3936	WScript.exe
25	3936	WScript.exe
26	3936	WScript.exe
27	3936	WScript.exe
28	3936	WScript.exe
29	3936	WScript.exe
30	3936	WScript.exe
31	3936	WScript.exe
32	3936	WScript.exe
33	3936	WScript.exe
34	3936	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\URivKZByzt.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\URivKZByzt.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\\URivKZByzt.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

212 3172 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
212	3172	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
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe
212	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 212 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	212	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 908 wrote to memory of 3936	908	wscript.exe	WScript.exe
PID 908 wrote to memory of 3936	908	wscript.exe	WScript.exe
PID 908 wrote to memory of 3172	908	wscript.exe	javaw.exe
PID 908 wrote to memory of 3172	908	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\29e6358d_aGAuLITv8n.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\URivKZByzt.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3936

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\siaeuoppwf.txt"
2⤵
PID:3172

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 3172 -s 352
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:212

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

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Downloads

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

MD5
4fccb6c905ca75de32d215f44e5adf08

SHA1
a72402da433c6a2f4de9b9dfa2e9cd6b38ff754c

SHA256
d396e916d9ca8d1505a157a4eca9626f9a15be706f64b65e2e8c5859c7776eb5

SHA512
c05de1d95ee26a3f90424aa9acc89940d305c96aebc31815ace24096349b344920701848d8eea63b14471c391cbf6913d586eae0734f7bee25797fe42b5854ed

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

MD5
d1abdb24c44f1ec93c4800f3128cf01f

SHA1
765a23589063a01d8c3e0b4e5615ac5d0ac475a6

SHA256
15ddd12f95653df0799fc8420b8d5d73361d3fd9a97237da094f4440ba108580

SHA512
659310fb4e2750cbb87ead008ffda551c6ce3296690c8747231b21ce8543961cecfbefb2c1cb9ba41f6fe87c60cd4f312549b1eab6039337514e2c18b529887f

Download Submit
memory/3172-116-0x0000000000000000-mapping.dmp

Download
memory/3936-114-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads