wshrat | 8d32af363e9f3720668195f73c5b0f439e77b695ad282efb6bb63b60ff5aed5c

Analysis

max time kernel
157s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-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

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 24 IoCs

Processes:

WScript.exe

flow	pid	process
18	4104	WScript.exe
29	4104	WScript.exe
40	4104	WScript.exe
44	4104	WScript.exe
46	4104	WScript.exe
51	4104	WScript.exe
53	4104	WScript.exe
59	4104	WScript.exe
65	4104	WScript.exe
66	4104	WScript.exe
68	4104	WScript.exe
70	4104	WScript.exe
71	4104	WScript.exe
72	4104	WScript.exe
74	4104	WScript.exe
75	4104	WScript.exe
76	4104	WScript.exe
77	4104	WScript.exe
79	4104	WScript.exe
80	4104	WScript.exe
81	4104	WScript.exe
83	4104	WScript.exe
84	4104	WScript.exe
85	4104	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\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

Processes:

WScript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\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:4104

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

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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