wshrat | 3d3b93e744a9fc154a70b6a6b709be2806598abb2b00db8e51faa55f961f3076

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

C2

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 24 IoCs

flow	pid	Process
5	1712	wscript.exe
6	1712	wscript.exe
7	1712	wscript.exe
9	1712	wscript.exe
10	1712	wscript.exe
11	1712	wscript.exe
13	1712	wscript.exe
14	1712	wscript.exe
15	1712	wscript.exe
17	1712	wscript.exe
18	1712	wscript.exe
19	1712	wscript.exe
21	1712	wscript.exe
22	1712	wscript.exe
23	1712	wscript.exe
25	1712	wscript.exe
26	1712	wscript.exe
27	1712	wscript.exe
29	1712	wscript.exe
30	1712	wscript.exe
31	1712	wscript.exe
33	1712	wscript.exe
34	1712	wscript.exe
35	1712	wscript.exe

Drops startup file 2 IoCs

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\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 24 IoCs

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

description	flow	ioc
HTTP User-Agent header	6	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	7	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	11	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	14	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	15	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	23	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	25	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	26	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	33	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	22	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	5	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	13	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	19	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	21	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	30	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	31	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	35	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	9	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	10	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	17	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	18	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	27	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	29	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 20/5/2024\|JavaScript
HTTP User-Agent header	34	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|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:1712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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