vjw0rm | 498156166a19ca4a2f60475444a7dba94441f4a3839e9e98d0e7d9aa970fc7fa

Analysis

max time kernel
153s
max time network
170s
platform
windows7_x64
resource
win7-en-20211208
submitted
07-02-2022 16:50

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General

Target

YRGH009QA.js
Size

13KB
MD5

7e4052c4ef66b69ea6567cf9511cddcd
SHA1

4d3b046443bbba80244121c7ff44b3c4425292d3
SHA256

c91b33406d00fdedeebd6ce809a612df96b5cea7835c2c13061498c6960d76e3
SHA512

2b0ee57fdd1f77cb54f657fbea8637f040bba3728916f7e376e9f465ecca70e52dc9296c185908b9a37760812f85962b323bfcc7acdb74563cb45b089e8c0f19

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
5	1392	wscript.exe
6	1392	wscript.exe
7	1392	wscript.exe
9	1392	wscript.exe
10	1392	wscript.exe
11	1392	wscript.exe
13	1392	wscript.exe
14	1392	wscript.exe
15	1392	wscript.exe
17	1392	wscript.exe
18	1392	wscript.exe
19	1392	wscript.exe
21	1392	wscript.exe
22	1392	wscript.exe
23	1392	wscript.exe
25	1392	wscript.exe
26	1392	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\YRGH009QA.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\YRGH009QA.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-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\Q0K8KAC1S1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\YRGH009QA.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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1620 schtasks.exe

pid	process
1620	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1392 wrote to memory of 1620	1392	wscript.exe	schtasks.exe
PID 1392 wrote to memory of 1620	1392	wscript.exe	schtasks.exe
PID 1392 wrote to memory of 1620	1392	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\YRGH009QA.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1392

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\YRGH009QA.js
2⤵
- Creates scheduled task(s)
PID:1620

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1392-54-0x000007FEFB711000-0x000007FEFB713000-memory.dmp

Filesize
8KB

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