wshrat | 3d3b93e744a9fc154a70b6a6b709be2806598abb2b00db8e51faa55f961f3076

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20-05-2024 11:27

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General

Target

mc.js
Size

262KB
MD5

61003ace63f39ed1cc39a22cb924e6b1
SHA1

914548e77023a990b0e79e1cea9ce25991e8116e
SHA256

3d3b93e744a9fc154a70b6a6b709be2806598abb2b00db8e51faa55f961f3076
SHA512

e9d25955a7a9700b996dc435e23505ddb772290bf6370a0ccd122a34fc6c21c935b6a4dfc60fd2d2d00e74e6edb0f6f49d9df960a2ac3b7155a98d908560ba53
SSDEEP

96:GM969Xx6VdE6ruU6S+4SWp9uS+V6fXuSEFYcnhVM3/DyBCODI99PRdN1QNLq9Iu/:gWGcucNHw1c5UEWzC423S68XC

Score

10^/10

wshrat execution persistence trojan

Malware Config

Extracted

Family

wshrat

http://chongmei33.publicvm.com:7045

Signatures

WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

Blocklisted process makes network request 22 IoCs

Processes:

wscript.exe

flow	pid	process
13	3300	wscript.exe
33	3300	wscript.exe
34	3300	wscript.exe
35	3300	wscript.exe
44	3300	wscript.exe
47	3300	wscript.exe
48	3300	wscript.exe
49	3300	wscript.exe
50	3300	wscript.exe
53	3300	wscript.exe
60	3300	wscript.exe
61	3300	wscript.exe
63	3300	wscript.exe
64	3300	wscript.exe
70	3300	wscript.exe
81	3300	wscript.exe
82	3300	wscript.exe
83	3300	wscript.exe
84	3300	wscript.exe
85	3300	wscript.exe
86	3300	wscript.exe
87	3300	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\mc.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mc.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mc = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\mc.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mc = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\mc.js\""	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Script User-Agent 22 IoCs

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

Processes:

description	flow	ioc
HTTP User-Agent header	13	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	86	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	47	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	48	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	53	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	61	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	64	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	70	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	84	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	87	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	33	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	60	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	81	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	82	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	85	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	34	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	35	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	44	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	49	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	50	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	63	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	83	WSHRAT\|5C2C50AC\|OBJIYUIE\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 20/5/2024\|JavaScript

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\mc.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3300

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mc.js
Filesize
262KB

MD5
61003ace63f39ed1cc39a22cb924e6b1

SHA1
914548e77023a990b0e79e1cea9ce25991e8116e

SHA256
3d3b93e744a9fc154a70b6a6b709be2806598abb2b00db8e51faa55f961f3076

SHA512
e9d25955a7a9700b996dc435e23505ddb772290bf6370a0ccd122a34fc6c21c935b6a4dfc60fd2d2d00e74e6edb0f6f49d9df960a2ac3b7155a98d908560ba53

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