wshrat | 29fcddcff1474d9e57d582d2ea2a22330c10e6b3f9f346263ffc5dba11707e74

Analysis

max time kernel
151s
max time network
153s
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
ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs
Size 273KB
Sample230321-r5xshabe75
SHA256 ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585
MD5 a82190a1aa4c07cf23e80083694ae1fd
SHA1 d62b8414e9872584c1498584b68b61e5a0e4dd26
SHA512 6b594b492aac69dfe0e2ff352b9ce131293bb4acdf7a9391200d1da8bd378f241160510da03cb53e1551a240dd90a1e773c9f35064b9cf5cd70dd4bc82b2f01f
SSDEEP 384:B3gLoLuSIMHELTMbseb4jxvTuh0I6EJG7T7EYXDL787OD3Hk2YeE1dDvJuVGKrhh:r/i
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
9	3588	WScript.exe
11	3588	WScript.exe
24	3588	WScript.exe
26	3588	WScript.exe
48	3588	WScript.exe
84	3588	WScript.exe
93	3588	WScript.exe
94	3588	WScript.exe
98	3588	WScript.exe
100	3588	WScript.exe
109	3588	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.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-1-5-21-1013461898-3711306144-4198452673-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.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\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3588

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

ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs
Size 273KB
SHA256 ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585
MD5 a82190a1aa4c07cf23e80083694ae1fd
SHA1 d62b8414e9872584c1498584b68b61e5a0e4dd26
SHA512 6b594b492aac69dfe0e2ff352b9ce131293bb4acdf7a9391200d1da8bd378f241160510da03cb53e1551a240dd90a1e773c9f35064b9cf5cd70dd4bc82b2f01f
SSDEEP 384:B3gLoLuSIMHELTMbseb4jxvTuh0I6EJG7T7EYXDL787OD3Hk2YeE1dDvJuVGKrhh:r/i
MD5 SHA1 SHA512 SSDEEP

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