wshrat | e1755cf3f8f189cb93bffdb04f0263d07718e0c5827fc45dfe5227df64fd67b3

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
21-03-2023 14:47

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General

Target

64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64.vbs
Size

198KB
MD5

cabfb532b1a74b86c6e2bda9d2085079
SHA1

076889ea3c5850677c67fad271028d717c21a37e
SHA256

64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64
SHA512

44e3024f159cd82f0b6886e51a2aed74613315f06a8d15e9a21c4e2e7967048d4c0b29f6ce431d64cc4b42bb8b9410a4afbb495c283fff136744a479f8397fd2
SSDEEP

384:g0EW3eLEL8Og4Rw1BMUsQ9JT2dR02zqB7L7cKF5B7A7MR9+0Kg0Bhpt7wp2k5V+0:g0ET1Epbhuh5mQBnF

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 13 IoCs

flow	pid	Process
7	1544	WScript.exe
26	1544	WScript.exe
41	1544	WScript.exe
44	1544	WScript.exe
45	1544	WScript.exe
46	1544	WScript.exe
58	1544	WScript.exe
60	1544	WScript.exe
64	1544	WScript.exe
84	1544	WScript.exe
88	1544	WScript.exe
92	1544	WScript.exe
96	1544	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64.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\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64.vbs\""	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64.vbs\""	WScript.exe

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

System Information Discovery
T1082

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1544

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\64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64.vbs

Filesize
198KB

MD5
cabfb532b1a74b86c6e2bda9d2085079

SHA1
076889ea3c5850677c67fad271028d717c21a37e

SHA256
64271b2cc7849f1e9ea9d881f6014af70db7800dd86397437342b11ac6ed9d64

SHA512
44e3024f159cd82f0b6886e51a2aed74613315f06a8d15e9a21c4e2e7967048d4c0b29f6ce431d64cc4b42bb8b9410a4afbb495c283fff136744a479f8397fd2

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