wshrat | 59ce78d979aca8457c92a37f6a93f81836af751bae9339d47359891fafebbbbc

Analysis

max time kernel
136s
max time network
146s
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
a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs
Size 267KB
Sample230321-r5xshabe74
SHA256 a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7
MD5 a4876007d9afb92163ed9933656eacbd
SHA1 8eafbf2887bb39ac089c95b50bf34fd27b7ee36f
SHA512 8db4e28e3e1718416c1a3dfe7d461efd429345621f30bfe2f3b67532e2c26833a53b57a89cd4b3587488bf017926076b12b92ec15e1868babe5ded766cfa335c
SSDEEP 768:NGiZmuiZO+YlWGNOHGxOrBr/kXiFs6d3f9GdsGd+9dP1EC4SV5BW:l
MD5 SHA1 SHA512 SSDEEP

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 11 IoCs

flow	pid	Process
22	3196	WScript.exe
49	3196	WScript.exe
51	3196	WScript.exe
67	3196	WScript.exe
91	3196	WScript.exe
97	3196	WScript.exe
113	3196	WScript.exe
114	3196	WScript.exe
118	3196	WScript.exe
119	3196	WScript.exe
120	3196	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.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
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs\""	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\software\microsoft\windows\currentversion\run	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\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3196

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

a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs
Size 267KB
SHA256 a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7
MD5 a4876007d9afb92163ed9933656eacbd
SHA1 8eafbf2887bb39ac089c95b50bf34fd27b7ee36f
SHA512 8db4e28e3e1718416c1a3dfe7d461efd429345621f30bfe2f3b67532e2c26833a53b57a89cd4b3587488bf017926076b12b92ec15e1868babe5ded766cfa335c
SSDEEP 768:NGiZmuiZO+YlWGNOHGxOrBr/kXiFs6d3f9GdsGd+9dP1EC4SV5BW:l
MD5 SHA1 SHA512 SSDEEP

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