wshrat | 01313c486b99a572a9dbcbc3e01d414f11624d4e9b813a825f962b5ce66fcf64

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
09-04-2023 07:10

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General

Target

Purcahse_Order.vbs
Size

230KB
MD5

dfaa0731635b4e0867fb1a5b00f97cd4
SHA1

0c0723a3447aa571afb33db576421a4af2dc8b86
SHA256

01313c486b99a572a9dbcbc3e01d414f11624d4e9b813a825f962b5ce66fcf64
SHA512

093af630e4ef2ad24ebfc088af53e5f6b6c9c88f51b6075aace72d9ce4a1de89d6825ace40eb23d7ae6c22900d1e6db04aee1544be4a701ed0c3980109fb326c
SSDEEP

768:HxeMsGDC5m7QRcs7Gbs9GNjfN4Jxw9qOlFOeO2rlznJfjc:2J

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	1424	WScript.exe
5	1424	WScript.exe
6	1424	WScript.exe
9	1424	WScript.exe
10	1424	WScript.exe
11	1424	WScript.exe
13	1424	WScript.exe
14	1424	WScript.exe
15	1424	WScript.exe
17	1424	WScript.exe
18	1424	WScript.exe
19	1424	WScript.exe
21	1424	WScript.exe
22	1424	WScript.exe
23	1424	WScript.exe
25	1424	WScript.exe
26	1424	WScript.exe
27	1424	WScript.exe
29	1424	WScript.exe
30	1424	WScript.exe
31	1424	WScript.exe
33	1424	WScript.exe
34	1424	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purcahse_Order.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purcahse_Order.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-1-5-21-3948302646-268491222-1934009652-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\Purcahse_Order = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purcahse_Order.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Purcahse_Order = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purcahse_Order.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\Purcahse_Order.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1424

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purcahse_Order.vbs

Filesize
230KB

MD5
dfaa0731635b4e0867fb1a5b00f97cd4

SHA1
0c0723a3447aa571afb33db576421a4af2dc8b86

SHA256
01313c486b99a572a9dbcbc3e01d414f11624d4e9b813a825f962b5ce66fcf64

SHA512
093af630e4ef2ad24ebfc088af53e5f6b6c9c88f51b6075aace72d9ce4a1de89d6825ace40eb23d7ae6c22900d1e6db04aee1544be4a701ed0c3980109fb326c

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