vjw0rm | 6170f6b6d0e8b91a5fd037a7322bfe80471b982c066fd1ea64e588eaad3147b1

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
15-02-2023 20:11

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General

Target

PO.230029.js
Size

3.5MB
MD5

2760f9a45e9e74c4eedfe9b0ee918e6b
SHA1

277c62b14c987da3cf4c9e7d4ee4478cf61580c7
SHA256

18827fed6ecd5e4d2c548dcad1eb21730a95f52b578bed75e3003b06a7390482
SHA512

45aa5c7a51f644e82fc436029187fef542ee9a3be80ed8c3535c0383c938509f4d3f4414c97328430092bec1eed5a5105d47f45f36664f49c63a146b12a9fb7e
SSDEEP

6144:nDKcCNX9cMH0svW5he7NbWSRU9qB02HkyjM6P:nDupdf

Score

10^/10

vjw0rm wshrat persistence trojan worm

Malware Config

Extracted

Family

wshrat

http://datalogs33.ddns.net:48665

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

Blocklisted process makes network request 62 IoCs

flow	pid	Process
7	2020	wscript.exe
8	760	wscript.exe
9	328	wscript.exe
11	2020	wscript.exe
13	328	wscript.exe
14	760	wscript.exe
16	2020	wscript.exe
18	2020	wscript.exe
20	328	wscript.exe
22	760	wscript.exe
25	2020	wscript.exe
26	2020	wscript.exe
28	760	wscript.exe
30	328	wscript.exe
32	2020	wscript.exe
33	328	wscript.exe
36	760	wscript.exe
37	2020	wscript.exe
38	2020	wscript.exe
42	760	wscript.exe
43	328	wscript.exe
47	2020	wscript.exe
48	2020	wscript.exe
49	328	wscript.exe
51	760	wscript.exe
53	2020	wscript.exe
56	760	wscript.exe
57	328	wscript.exe
59	2020	wscript.exe
60	2020	wscript.exe
62	760	wscript.exe
64	328	wscript.exe
66	2020	wscript.exe
69	2020	wscript.exe
70	760	wscript.exe
72	328	wscript.exe
74	2020	wscript.exe
76	760	wscript.exe
77	2020	wscript.exe
80	328	wscript.exe
81	2020	wscript.exe
83	760	wscript.exe
85	328	wscript.exe
87	2020	wscript.exe
89	760	wscript.exe
91	2020	wscript.exe
94	328	wscript.exe
95	2020	wscript.exe
97	760	wscript.exe
99	328	wscript.exe
100	2020	wscript.exe
101	2020	wscript.exe
104	760	wscript.exe
107	328	wscript.exe
108	2020	wscript.exe
111	760	wscript.exe
112	2020	wscript.exe
114	328	wscript.exe
115	2020	wscript.exe
118	760	wscript.exe
119	2020	wscript.exe
121	328	wscript.exe

Drops startup file 5 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO.230029.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO.230029.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EgxzFQzayc.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EgxzFQzayc.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EgxzFQzayc.js	wscript.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\PO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO.230029.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO.230029.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\PO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO.230029.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO.230029.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\software\microsoft\windows\currentversion\run	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Script User-Agent 28 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	18	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	37	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	108	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	7	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	59	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	60	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	91	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	16	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	87	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	95	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	101	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	11	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	32	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	53	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	38	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	66	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	69	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	77	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	47	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	48	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	74	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	100	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	119	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	25	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	26	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	81	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	112	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript
HTTP User-Agent header	115	WSHRAT\|94A7BB46\|RYNKSFQE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 15/2/2023\|JavaScript

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 828 wrote to memory of 760	828	wscript.exe	27
PID 828 wrote to memory of 760	828	wscript.exe	27
PID 828 wrote to memory of 760	828	wscript.exe	27
PID 828 wrote to memory of 2020	828	wscript.exe	28
PID 828 wrote to memory of 2020	828	wscript.exe	28
PID 828 wrote to memory of 2020	828	wscript.exe	28
PID 2020 wrote to memory of 328	2020	wscript.exe	30
PID 2020 wrote to memory of 328	2020	wscript.exe	30
PID 2020 wrote to memory of 328	2020	wscript.exe	30

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO.230029.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:828
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\EgxzFQzayc.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:760
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\PO.230029.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\EgxzFQzayc.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:328

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\EgxzFQzayc.js

Filesize
346KB

MD5
5aa142c9e33d0c5d72f0fc4951e6c080

SHA1
b20626787b7e3f16c2c8aa46489c60002be05b79

SHA256
d0dbf9b445cc01f36e0d7b3483ade4479a2f1b54bf531716330b32b0d904d303

SHA512
a8c9769fc98a8e867b0b5e8bd73fc602f906d63ead71ad85da084c00c32e0a12dd8c124d82fffe8117fc325a7325e2e9caf2e3e49a6ebed2cd5daf6d27b60e77

Download Submit
C:\Users\Admin\AppData\Roaming\EgxzFQzayc.js

Filesize
346KB

MD5
5aa142c9e33d0c5d72f0fc4951e6c080

SHA1
b20626787b7e3f16c2c8aa46489c60002be05b79

SHA256
d0dbf9b445cc01f36e0d7b3483ade4479a2f1b54bf531716330b32b0d904d303

SHA512
a8c9769fc98a8e867b0b5e8bd73fc602f906d63ead71ad85da084c00c32e0a12dd8c124d82fffe8117fc325a7325e2e9caf2e3e49a6ebed2cd5daf6d27b60e77

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO.230029.js

Filesize
3.5MB

MD5
2760f9a45e9e74c4eedfe9b0ee918e6b

SHA1
277c62b14c987da3cf4c9e7d4ee4478cf61580c7

SHA256
18827fed6ecd5e4d2c548dcad1eb21730a95f52b578bed75e3003b06a7390482

SHA512
45aa5c7a51f644e82fc436029187fef542ee9a3be80ed8c3535c0383c938509f4d3f4414c97328430092bec1eed5a5105d47f45f36664f49c63a146b12a9fb7e

Download Submit
C:\Users\Admin\AppData\Roaming\PO.230029.js

Filesize
3.5MB

MD5
2760f9a45e9e74c4eedfe9b0ee918e6b

SHA1
277c62b14c987da3cf4c9e7d4ee4478cf61580c7

SHA256
18827fed6ecd5e4d2c548dcad1eb21730a95f52b578bed75e3003b06a7390482

SHA512
45aa5c7a51f644e82fc436029187fef542ee9a3be80ed8c3535c0383c938509f4d3f4414c97328430092bec1eed5a5105d47f45f36664f49c63a146b12a9fb7e

Download Submit