wshrat | b4420793217d8bd201ba7f61b863873c7ec1befa308d9eea52b90cb2cbc4d1a9

Analysis

max time kernel
128s
max time network
129s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07-05-2024 08:12

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General

Target

Pending_Invoice_Bank_Details_XLSX.js
Size

616KB
MD5

146543805fbb1a73135ca00f2899118f
SHA1

f13878fd653431ab505ee248abe931880faab471
SHA256

b4420793217d8bd201ba7f61b863873c7ec1befa308d9eea52b90cb2cbc4d1a9
SHA512

efad864edb7dff50ef656481de3664f0752449ffc4b3c4cebc4fd5fe3b241c663c2948eb6c93c20e68b1ffd0a19061b8200c2a779bf55a6746827aa9b23a53a0
SSDEEP

12288:OYeIrWr/qRigAyX/kngXFbjTLvaH28nZH19Iimg0VtxWvTbxzOObcizI/mofdEM+:OYeIrWr/qRigAyX/kngXFbjTLvaH28n1

Score

10^/10

wshrat execution persistence trojan

Malware Config

Extracted

Family

wshrat

http://masterokrwh.duckdns.org:8426

Signatures

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

Blocklisted process makes network request 12 IoCs

flow	pid	Process
4	2932	wscript.exe
7	2932	wscript.exe
9	2932	wscript.exe
10	2932	wscript.exe
12	2932	wscript.exe
14	2932	wscript.exe
15	2932	wscript.exe
18	2932	wscript.exe
19	2932	wscript.exe
20	2932	wscript.exe
21	2932	wscript.exe
23	2932	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Pending_Invoice_Bank_Details_XLSX.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Pending_Invoice_Bank_Details_XLSX.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\Pending_Invoice_Bank_Details_XLSX = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Pending_Invoice_Bank_Details_XLSX.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Pending_Invoice_Bank_Details_XLSX = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Pending_Invoice_Bank_Details_XLSX.js\""	wscript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	pastebin.com
10	pastebin.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
11	ip-api.com

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 9 IoCs

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

description	flow	ioc
HTTP User-Agent header	9	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	10	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	19	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 7/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	21	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 7/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	23	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 7/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	14	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 7/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	15	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 7/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	18	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 7/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	20	WSHRAT\|688E6B44\|HKULBIBU\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 7/5/2024\|JavaScript-v3.4\|GB:United Kingdom

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Pending_Invoice_Bank_Details_XLSX.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Pending_Invoice_Bank_Details_XLSX.js

Filesize
616KB

MD5
146543805fbb1a73135ca00f2899118f

SHA1
f13878fd653431ab505ee248abe931880faab471

SHA256
b4420793217d8bd201ba7f61b863873c7ec1befa308d9eea52b90cb2cbc4d1a9

SHA512
efad864edb7dff50ef656481de3664f0752449ffc4b3c4cebc4fd5fe3b241c663c2948eb6c93c20e68b1ffd0a19061b8200c2a779bf55a6746827aa9b23a53a0

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads