wshrat | 3e0a98bcc5a42869c0afa89ef0f32ccc974ceb62f79f3329049a6b8239711678

Analysis

max time kernel
146s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
03-03-2023 01:36

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General

Target

ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs
Size

273KB
MD5

a82190a1aa4c07cf23e80083694ae1fd
SHA1

d62b8414e9872584c1498584b68b61e5a0e4dd26
SHA256

ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585
SHA512

6b594b492aac69dfe0e2ff352b9ce131293bb4acdf7a9391200d1da8bd378f241160510da03cb53e1551a240dd90a1e773c9f35064b9cf5cd70dd4bc82b2f01f
SSDEEP

384:B3gLoLuSIMHELTMbseb4jxvTuh0I6EJG7T7EYXDL787OD3Hk2YeE1dDvJuVGKrhh:r/i

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 26 IoCs

flow	pid	Process
28	3792	WScript.exe
30	3792	WScript.exe
34	3792	WScript.exe
39	3792	WScript.exe
41	3792	WScript.exe
49	3792	WScript.exe
59	3792	WScript.exe
71	3792	WScript.exe
72	3792	WScript.exe
76	3792	WScript.exe
82	3792	WScript.exe
83	3792	WScript.exe
84	3792	WScript.exe
85	3792	WScript.exe
88	3792	WScript.exe
89	3792	WScript.exe
90	3792	WScript.exe
91	3792	WScript.exe
92	3792	WScript.exe
93	3792	WScript.exe
94	3792	WScript.exe
95	3792	WScript.exe
96	3792	WScript.exe
97	3792	WScript.exe
98	3792	WScript.exe
99	3792	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
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\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
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\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3792

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\ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585.vbs

Filesize
273KB

MD5
a82190a1aa4c07cf23e80083694ae1fd

SHA1
d62b8414e9872584c1498584b68b61e5a0e4dd26

SHA256
ca8c51adb24f855f6e92f107ccb4b782081661d8a5288b08bf4fd5911ae02585

SHA512
6b594b492aac69dfe0e2ff352b9ce131293bb4acdf7a9391200d1da8bd378f241160510da03cb53e1551a240dd90a1e773c9f35064b9cf5cd70dd4bc82b2f01f

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