vjw0rm | 86177bfcebdc7ae4a3d049399710ff6272f8289160c068465d729e7cff80f4c7

Analysis

max time kernel
144s
max time network
159s
platform
windows10_x64
resource
win10v20210408
submitted
01-09-2021 14:05

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General

Target

yyUgEcLmud.js
Size

10KB
MD5

65363d0ea259acee31709e3e7a45cab8
SHA1

10143fc1636eb68c01f5fd6b39244dbd393c66e9
SHA256

86177bfcebdc7ae4a3d049399710ff6272f8289160c068465d729e7cff80f4c7
SHA512

6eb5e93b6a6be0e0c9aecbb4f356e188c41a475a926ef1de5329bfbb80509ab4dbbafd219027ea42e89ae4d355740277820a5e20c0dae5cb27d00e2f00ee070f

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	632	wscript.exe
17	632	wscript.exe
19	632	wscript.exe
20	632	wscript.exe
21	632	wscript.exe
22	632	wscript.exe
23	632	wscript.exe
24	632	wscript.exe
25	632	wscript.exe
26	632	wscript.exe
27	632	wscript.exe
28	632	wscript.exe
29	632	wscript.exe
30	632	wscript.exe
31	632	wscript.exe
32	632	wscript.exe
33	632	wscript.exe
34	632	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\yyUgEcLmud.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\yyUgEcLmud.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\\Local\\Temp\\yyUgEcLmud.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

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\yyUgEcLmud.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:632

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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