vjw0rm | 91bf45557d26f24ad6224c87c80e94ee9c19094b66f67bcfb121e65c568e9632

Analysis

max time kernel
149s
max time network
165s
platform
windows10_x64
resource
win10v20210410
submitted
01-09-2021 07:06

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General

Target

1.js
Size

31KB
MD5

3771bb59d87a6d8e0d7e7a9846e71f1a
SHA1

dc4046ac08b572ad4c155606de569456ec4335b4
SHA256

91bf45557d26f24ad6224c87c80e94ee9c19094b66f67bcfb121e65c568e9632
SHA512

2d70c22373e4e2ef3803acd55985ee3202ead0078bff572ddb9de06e8fed1e29ff12df61387c6afa929b74b0e4c1309cbae66effb134fdbc48b390ba50254c1e

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 20 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
6	3980	wscript.exe
8	1308	wscript.exe
15	1308	wscript.exe
18	1308	wscript.exe
19	1308	wscript.exe
20	1308	wscript.exe
21	1308	wscript.exe
22	1308	wscript.exe
23	1308	wscript.exe
24	1308	wscript.exe
25	1308	wscript.exe
26	1308	wscript.exe
27	1308	wscript.exe
28	1308	wscript.exe
29	1308	wscript.exe
30	1308	wscript.exe
31	1308	wscript.exe
32	1308	wscript.exe
33	1308	wscript.exe
34	1308	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\amqolYPJMq.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\amqolYPJMq.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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\amqolYPJMq.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 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 3980 wrote to memory of 1308	3980	wscript.exe	wscript.exe
PID 3980 wrote to memory of 1308	3980	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\1.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3980

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\amqolYPJMq.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1308

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\amqolYPJMq.js
MD5
3f7b92769fc59d8adc125b4d4e8adee4

SHA1
b3ea6913dcf3681572a1db1f429cc5e1e49b060e

SHA256
e1fccde6528046c2c1e41096085c199efaddc1393d42f6696165aeec43c9a209

SHA512
659caad97e885af9d5f2dece465873b517fc34a5c67f5f0aba08b9ef868cca57fe025ed9979bd0933e46ee45792d5b424bd99a24c4449c5b739f17e0b6bdf01f

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memory/1308-114-0x0000000000000000-mapping.dmp

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