vjw0rm | 6e64dbcbe7e1c0e0eb8f4f967b936221c7a6c0185718fe991612e478e22f9cc8

Analysis

max time kernel
151s
max time network
180s
platform
windows7_x64
resource
win7v20210408
submitted
29-07-2021 11:01

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General

Target

COTIZACION July 1079.js
Size

16KB
MD5

8a64707b027a9b569641b6151c54ba24
SHA1

b34f4dbb2f5b9a34645ea444db51841d9325a8cf
SHA256

6e64dbcbe7e1c0e0eb8f4f967b936221c7a6c0185718fe991612e478e22f9cc8
SHA512

9cade1e35eca162b7c06529b104db155e7c3a3f62965a88cbc66d709ee17ae7e86f53307b2208829d8c1ed498c96bbc3f73e7935df12b01533b4ef693f900456

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 2 IoCs

Processes:

wscript.exewscript.exe

flow pid process

8 1980 wscript.exe
9 1208 wscript.exe

flow	pid	process
8	1980	wscript.exe
9	1208	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\NBQpvDxIha.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NBQpvDxIha.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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\B02N3ZE1UL = "\"C:\\Users\\Admin\\AppData\\Roaming\\NBQpvDxIha.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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1208 wrote to memory of 1980	1208	wscript.exe	wscript.exe
PID 1208 wrote to memory of 1980	1208	wscript.exe	wscript.exe
PID 1208 wrote to memory of 1980	1208	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\COTIZACION July 1079.js"
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1208

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\NBQpvDxIha.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1980

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\NBQpvDxIha.js
MD5
1807d266a0331297bb3459474f4a78b5

SHA1
724d14ff54fa10acdddb4d158c68782388ca3ae6

SHA256
0167ce0f367ac05128ac702d9f1b8a853a56e5fc0fa113d53a34266b6de3f1ac

SHA512
a980c5db1bfe54a7cf5e091ae79a73240c1d17cc6cdd99b154375921030827cc0494bf8a024d0ba9a22aeb14a0960d8c8011b84683142c72ed7030c01327d132

Download Submit
memory/1208-60-0x000007FEFB9F1000-0x000007FEFB9F3000-memory.dmp

Filesize
8KB

Download
memory/1980-61-0x0000000000000000-mapping.dmp

Download