vjw0rm | 1a49aaae2ba16cc05a96ebe87a81a5cd20de012e6970f3e252dbaf8ee99d3381

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
23-09-2022 06:15

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General

Target

eReceipt.js
Size

20KB
MD5

e07134ac3929d76845a48a0eba4d80f3
SHA1

b386428d0df6b2e9c89f9ad2bc45f169e6e57e57
SHA256

1a49aaae2ba16cc05a96ebe87a81a5cd20de012e6970f3e252dbaf8ee99d3381
SHA512

981b1a54fdfeb67ea8d3023805f6810b66ee0a8a1741ee95816b07e0a4aad844318363aecab74e56478d3ced12002d0ed7b5115f1d333da32fa2489462bc7341
SSDEEP

384:QTjoy68n6K6HGIW6ghWKW6zYaJ7fhlnTao3jAq7+pQh/iNbGgTwO3kV:wnd6cpTVplZgbGgTwOUV

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://zeegod.duckdns.org:9004

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 15 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
6	4992	wscript.exe
7	3400	wscript.exe
19	3400	wscript.exe
30	3400	wscript.exe
32	3400	wscript.exe
38	3400	wscript.exe
41	3400	wscript.exe
42	3400	wscript.exe
43	3400	wscript.exe
45	3400	wscript.exe
46	3400	wscript.exe
47	3400	wscript.exe
48	3400	wscript.exe
49	3400	wscript.exe
50	3400	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 3 IoCs

Processes:

wscript.exewscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ecOTkqWSWV.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eReceipt.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ecOTkqWSWV.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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KYXNMD0WI5 = "\"C:\\Users\\Admin\\eReceipt.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

4352 schtasks.exe

pid	process
4352	schtasks.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4992 wrote to memory of 3400	4992	wscript.exe	wscript.exe
PID 4992 wrote to memory of 3400	4992	wscript.exe	wscript.exe
PID 4992 wrote to memory of 4352	4992	wscript.exe	schtasks.exe
PID 4992 wrote to memory of 4352	4992	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\eReceipt.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4992

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\ecOTkqWSWV.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
PID:3400

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\eReceipt.js
2⤵
- Creates scheduled task(s)
PID:4352

Network

MITRE ATT&CK Matrix ATT&CK 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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\ecOTkqWSWV.js
Filesize
6KB

MD5
c5bfe416f6a801a7424fc79dd8f6ef8d

SHA1
672d15536f43d5565f70d8055b39af59996925d2

SHA256
ba760a5cce3ab662b39760d301d75bd82b2e49328fe917a4135069ffa91dd428

SHA512
85fc096d04dbc442a7871794c0161073cfd95cc69135109d393a774612225a3d372efe577187ccd9f268d07c56d7476c0d234b1651b2932da92680d6aa0d3be4

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memory/3400-132-0x0000000000000000-mapping.dmp

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memory/4352-134-0x0000000000000000-mapping.dmp

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