wshrat | 2b4d9736707fe7481f7ecfa29db3ae062f61452308d8f6f352cb970fa243fadf

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2023, 01:16

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General

Target
a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.vbs
Size 271KB
Sample230408-bm61fsdc61
SHA256 a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a
MD5 26dd4d56ebc911f4088bff1a4ba6d90d
SHA1 81be8f4ad3eb8061da6722a8e69c4ca67c0c1a66
SHA512 2cb54bd272b2238a2168828e69c39e0c9ed9017690f08130927a71aa89e638419cce3d63e8e582ec151414c8c6bc94a56b2d5e937a56df182914e8ac6e0b3f59
SSDEEP 768:DQsieR2wEfnsuuhjdVex8HWqHBACAaDHfj5BjW:wl
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 21 IoCs

flow	pid	Process
17	4936	WScript.exe
25	4936	WScript.exe
26	4936	WScript.exe
27	4936	WScript.exe
29	4936	WScript.exe
33	4936	WScript.exe
35	4936	WScript.exe
37	4936	WScript.exe
40	4936	WScript.exe
44	4936	WScript.exe
45	4936	WScript.exe
47	4936	WScript.exe
48	4936	WScript.exe
49	4936	WScript.exe
51	4936	WScript.exe
52	4936	WScript.exe
53	4936	WScript.exe
54	4936	WScript.exe
56	4936	WScript.exe
57	4936	WScript.exe
58	4936	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\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.vbs	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.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\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.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\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4936

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

a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a.vbs
Size 271KB
SHA256 a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a
MD5 26dd4d56ebc911f4088bff1a4ba6d90d
SHA1 81be8f4ad3eb8061da6722a8e69c4ca67c0c1a66
SHA512 2cb54bd272b2238a2168828e69c39e0c9ed9017690f08130927a71aa89e638419cce3d63e8e582ec151414c8c6bc94a56b2d5e937a56df182914e8ac6e0b3f59
SSDEEP 768:DQsieR2wEfnsuuhjdVex8HWqHBACAaDHfj5BjW:wl
MD5 SHA1 SHA512 SSDEEP

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