wshrat | 8d32af363e9f3720668195f73c5b0f439e77b695ad282efb6bb63b60ff5aed5c

Analysis

max time kernel
129s
max time network
142s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
18-05-2023 01:59

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General

Target

Purchase_Order.vbs
Size

260KB
MD5

2ff3bce5c3e24a9a66ed42b49c3da68d
SHA1

ca5506d9d30e0690d3cc023fafd524e09145ae83
SHA256

7287f5e59370b51b2fa62b837ef11e5b7c37703151227c2fee01feaf04836fce
SHA512

675956065410bc169900d5b2f7e5cc93c3499c222e3bb4cf83a578413a66fb9fdc0dad3f0af2a8fcefddcf178d6709f8e6efedea8a4bd6e25337026172706b85
SSDEEP

768:Uwh+I+2b4WelZTvQYeXbxbYvEl2C9v0s0kdj57L3bK:Uwq7

Score

10^/10

wshrat persistence trojan

Malware Config

Signatures

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

Blocklisted process makes network request 6 IoCs

flow	pid	Process
4	1148	WScript.exe
8	1148	WScript.exe
9	1148	WScript.exe
11	1148	WScript.exe
12	1148	WScript.exe
13	1148	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase_Order.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase_Order.vbs	WScript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Windows\CurrentVersion\Run\Purchase_Order = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purchase_Order.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Purchase_Order = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purchase_Order.vbs\""	WScript.exe

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

System Information Discovery
T1082

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Purchase_Order.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1148

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\Microsoft\Windows\Start Menu\Programs\Startup\Purchase_Order.vbs

Filesize
260KB

MD5
2ff3bce5c3e24a9a66ed42b49c3da68d

SHA1
ca5506d9d30e0690d3cc023fafd524e09145ae83

SHA256
7287f5e59370b51b2fa62b837ef11e5b7c37703151227c2fee01feaf04836fce

SHA512
675956065410bc169900d5b2f7e5cc93c3499c222e3bb4cf83a578413a66fb9fdc0dad3f0af2a8fcefddcf178d6709f8e6efedea8a4bd6e25337026172706b85

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