wshrat | 3e0a98bcc5a42869c0afa89ef0f32ccc974ceb62f79f3329049a6b8239711678

Analysis

max time kernel
145s
max time network
148s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-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 23 IoCs

flow	pid	Process
4	1472	WScript.exe
5	1472	WScript.exe
6	1472	WScript.exe
9	1472	WScript.exe
10	1472	WScript.exe
11	1472	WScript.exe
13	1472	WScript.exe
14	1472	WScript.exe
15	1472	WScript.exe
17	1472	WScript.exe
18	1472	WScript.exe
19	1472	WScript.exe
21	1472	WScript.exe
22	1472	WScript.exe
23	1472	WScript.exe
25	1472	WScript.exe
26	1472	WScript.exe
27	1472	WScript.exe
29	1472	WScript.exe
30	1472	WScript.exe
31	1472	WScript.exe
33	1472	WScript.exe
34	1472	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-1-5-21-3499517378-2376672570-1134980332-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\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:1472

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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