wshrat | 814dc387a51fcee7e9345017656cb77dc1f90c26bc61d16b9116a6f83978752f

Analysis

max time kernel
165s
max time network
187s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
21/03/2023, 14:47

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General

Target
ORDER_230320.pdf.vbs
Size 267KB
Sample230321-r5xshabe76
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 10 IoCs

flow	pid	Process
40	3496	WScript.exe
69	3496	WScript.exe
82	3496	WScript.exe
100	3496	WScript.exe
104	3496	WScript.exe
105	3496	WScript.exe
106	3496	WScript.exe
110	3496	WScript.exe
112	3496	WScript.exe
113	3496	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ORDER_230320.pdf.vbs	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ORDER_230320.pdf.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-1-5-21-2805025096-2326403612-4231045514-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ORDER_230320 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ORDER_230320.pdf.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ORDER_230320 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ORDER_230320.pdf.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\ORDER_230320.pdf.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3496

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

ORDER_230320.pdf.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ORDER_230320.pdf.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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