wshrat | 98a77976e106ed9d665a7856da1371dd1e6e61cda4dd076cbb6f191c2f1e9ff6

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
25-03-2023 17:18

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General

Target

Purchase_Order.vbs
Size

216KB
MD5

286fff39c1b94a7faea3275f7d32abfd
SHA1

fc077b0bcef5f5c694cf913cd69081c5bcf23d82
SHA256

98a77976e106ed9d665a7856da1371dd1e6e61cda4dd076cbb6f191c2f1e9ff6
SHA512

e618504775f2e3a5a294a519d18868531c51822ae4377ec800ad5fb264aaa2c77bbb3e0dfbc3c5f812b6940e6e91131d1616b75239a9dd6f4c7ab4f55df3d2c3
SSDEEP

384:dQiz8VURuMLULOnskUVyxn4eyY/3TmXSqEKk1x3D82nc8OmyGD0a9Yo4V4ShBBqn:18VURFqSXgNMeST

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
2	4508	WScript.exe
21	4508	WScript.exe
23	4508	WScript.exe
24	4508	WScript.exe
25	4508	WScript.exe
28	4508	WScript.exe
30	4508	WScript.exe
31	4508	WScript.exe
32	4508	WScript.exe
33	4508	WScript.exe
34	4508	WScript.exe
36	4508	WScript.exe
40	4508	WScript.exe
41	4508	WScript.exe
42	4508	WScript.exe
43	4508	WScript.exe
44	4508	WScript.exe
45	4508	WScript.exe
46	4508	WScript.exe
47	4508	WScript.exe
48	4508	WScript.exe
49	4508	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase_Order.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase_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-1-5-21-1013461898-3711306144-4198452673-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Purchase_Order = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purchase_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\Purchase_Order = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purchase_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\Purchase_Order.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4508

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\Purchase_Order.vbs

Filesize
216KB

MD5
286fff39c1b94a7faea3275f7d32abfd

SHA1
fc077b0bcef5f5c694cf913cd69081c5bcf23d82

SHA256
98a77976e106ed9d665a7856da1371dd1e6e61cda4dd076cbb6f191c2f1e9ff6

SHA512
e618504775f2e3a5a294a519d18868531c51822ae4377ec800ad5fb264aaa2c77bbb3e0dfbc3c5f812b6940e6e91131d1616b75239a9dd6f4c7ab4f55df3d2c3

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