wshrat | 75f76d1f0ac721195b5521cf3ed4c980f757c0517046ecfdc24de3451852c67f

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
22-02-2023 11:13

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General

Target

Payment Copy.vbs
Size

245KB
MD5

6cf25c54bbf78ea413ad803fffe22b13
SHA1

f0ff88f5a0279e5c36432c17551aeb22be1d156a
SHA256

75f76d1f0ac721195b5521cf3ed4c980f757c0517046ecfdc24de3451852c67f
SHA512

46aa06243670976bf6f4e9120e9f82abc74d500ed59478eba919d11d16258aca889f2f695d7895f546ffcbee630cd0f29ccdb6572f52f4e76cd73e7c52473492
SSDEEP

768:2CGOM8Mukd+YyZ2bcSKGDJ5h8HAzmMPziai2f3Dxz7Jc:2C/Mm+bG

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 22 IoCs

flow	pid	Process
4	1744	WScript.exe
5	1744	WScript.exe
6	1744	WScript.exe
9	1744	WScript.exe
10	1744	WScript.exe
11	1744	WScript.exe
13	1744	WScript.exe
14	1744	WScript.exe
15	1744	WScript.exe
17	1744	WScript.exe
18	1744	WScript.exe
19	1744	WScript.exe
21	1744	WScript.exe
22	1744	WScript.exe
23	1744	WScript.exe
25	1744	WScript.exe
26	1744	WScript.exe
27	1744	WScript.exe
29	1744	WScript.exe
30	1744	WScript.exe
31	1744	WScript.exe
33	1744	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\Payment Copy.vbs	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Payment Copy.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\Payment Copy = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Payment Copy.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Payment Copy = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Payment Copy.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\Payment Copy.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1744

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\Payment Copy.vbs

Filesize
245KB

MD5
6cf25c54bbf78ea413ad803fffe22b13

SHA1
f0ff88f5a0279e5c36432c17551aeb22be1d156a

SHA256
75f76d1f0ac721195b5521cf3ed4c980f757c0517046ecfdc24de3451852c67f

SHA512
46aa06243670976bf6f4e9120e9f82abc74d500ed59478eba919d11d16258aca889f2f695d7895f546ffcbee630cd0f29ccdb6572f52f4e76cd73e7c52473492

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