vjw0rm | 9981308b63cb177296414efd882a0e89e79ed1f0755cb56dc97ddb29601b3cce

General

Target

475f9fcd_xdlacJ9p1B.js
Size

198KB
MD5

475f9fcd8f4e9078227988e15ca463e9
SHA1

04c8d0e3ba01039616bd926fb83f261d6e0064f8
SHA256

9981308b63cb177296414efd882a0e89e79ed1f0755cb56dc97ddb29601b3cce
SHA512

408c9fddece3f106da183eb8b50192145f8b10ebd74699c5dafdfe15a22653704653f80fb12098e807f6e19b7833e284c44bc587721ad35339969c821a7b37b3

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
6	1896	WScript.exe
7	1896	WScript.exe
8	1896	WScript.exe
10	1896	WScript.exe
11	1896	WScript.exe
12	1896	WScript.exe
14	1896	WScript.exe
15	1896	WScript.exe
16	1896	WScript.exe
18	1896	WScript.exe
19	1896	WScript.exe
20	1896	WScript.exe
22	1896	WScript.exe
23	1896	WScript.exe
24	1896	WScript.exe
26	1896	WScript.exe
27	1896	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\wBFhGdlDsl.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wBFhGdlDsl.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
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\wBFhGdlDsl.js\""	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run	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

1868 1632 WerFault.exe javaw.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1868 WerFault.exe
1868 WerFault.exe
1868 WerFault.exe
1868 WerFault.exe
1868 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1868 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1868 WerFault.exe

pid	pid_target	process	target process
1868	1632	WerFault.exe	javaw.exe

pid	process
1868	WerFault.exe
1868	WerFault.exe
1868	WerFault.exe
1868	WerFault.exe
1868	WerFault.exe

pid	process
1868	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1868	WerFault.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

wscript.exejavaw.exe

description	pid	process	target process
PID 344 wrote to memory of 1896	344	wscript.exe	WScript.exe
PID 344 wrote to memory of 1896	344	wscript.exe	WScript.exe
PID 344 wrote to memory of 1896	344	wscript.exe	WScript.exe
PID 344 wrote to memory of 1632	344	wscript.exe	javaw.exe
PID 344 wrote to memory of 1632	344	wscript.exe	javaw.exe
PID 344 wrote to memory of 1632	344	wscript.exe	javaw.exe
PID 1632 wrote to memory of 1868	1632	javaw.exe	WerFault.exe
PID 1632 wrote to memory of 1868	1632	javaw.exe	WerFault.exe
PID 1632 wrote to memory of 1868	1632	javaw.exe	WerFault.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\475f9fcd_xdlacJ9p1B.js
1⤵
- Suspicious use of WriteProcessMemory
PID:344

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\wBFhGdlDsl.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1896

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\kbduimwfaf.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:1632

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1632 -s 140
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1868

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\kbduimwfaf.txt

MD5
468ec549c270898563a0d61e42a3bd17

SHA1
6bbd046226d2a87abd4e24d9831e029d97f5e0c7

SHA256
ba97fd311dcae06ced279a1a5503252c7c0986a28e4168f0f96b4afcbcb7f79b

SHA512
e9071cd00f5c12810e08655f9dedd740fa3052132467a1596056d986a505d980fde4a0bac0d9ff573b630fd0c5b4aeec05b878bd3d05c549e9745fe26dbc8039

Download Submit
C:\Users\Admin\AppData\Roaming\wBFhGdlDsl.js

MD5
8da364e48c1693849411e06c5d4124a2

SHA1
a3d64ad7a10fb4a3edd30eb368a47db9c3280bcf

SHA256
b58911f7beb1eacf2399e3fd1aadc1ca9c105844380a458e8fae6cb988ca6e68

SHA512
845616a49ee1bdb6fb16c29c604280a1ec19dc8665560c3eb4a9db8fc3fc02a85d0a6a9cc48cabad0828751eeaf607c984d1e54521b27a4788b9296f7bee8859

Download Submit
memory/344-60-0x000007FEFBAE1000-0x000007FEFBAE3000-memory.dmp

Filesize
8KB

Download
memory/1632-63-0x0000000000000000-mapping.dmp

Download
memory/1868-66-0x0000000000000000-mapping.dmp

Download
memory/1868-68-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/1896-61-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads