wshrat | af225710834945af83a66163ffe1549d64c624d5d95f527fdd7eced708497fc4

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2023 15:33

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General

Target

Purchase_Order.xls.vbs
Size

527KB
MD5

8faf36edfae1ec0e8eccd3c562c03903
SHA1

0c44c3c6291c67c4eae6e1f8238f098adaee1a32
SHA256

1c546a6548beda639640ebfbb52abd5f6013c33500172cfccf0e8716c96bb196
SHA512

a54ea5e74c1320259b23d43e2eaadf83cf0705306df6dd1ba4bd4e9d77889d04449aa5161ad33165814a8b0f7baf41567537b721a048222f655216d1efdca56b
SSDEEP

384:Lu1hvWiWMmkNULg4viK3Ai44MXziJGUSJ0Pw6qVskjhj6Zxc6Xx0f3+hFx+gItIL:cvO

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 26 IoCs

flow	pid	Process
16	3240	WScript.exe
22	3240	WScript.exe
29	3240	WScript.exe
31	3240	WScript.exe
37	3240	WScript.exe
38	3240	WScript.exe
40	3240	WScript.exe
42	3240	WScript.exe
46	3240	WScript.exe
48	3240	WScript.exe
50	3240	WScript.exe
51	3240	WScript.exe
53	3240	WScript.exe
54	3240	WScript.exe
55	3240	WScript.exe
57	3240	WScript.exe
58	3240	WScript.exe
59	3240	WScript.exe
60	3240	WScript.exe
62	3240	WScript.exe
63	3240	WScript.exe
64	3240	WScript.exe
65	3240	WScript.exe
67	3240	WScript.exe
68	3240	WScript.exe
69	3240	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.xls.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase_Order.xls.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-1-5-21-1529757233-3489015626-3409890339-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Purchase_Order = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purchase_Order.xls.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.xls.vbs\""	WScript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Purchase_Order.xls.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3240

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\Purchase_Order.xls.vbs

Filesize
527KB

MD5
8faf36edfae1ec0e8eccd3c562c03903

SHA1
0c44c3c6291c67c4eae6e1f8238f098adaee1a32

SHA256
1c546a6548beda639640ebfbb52abd5f6013c33500172cfccf0e8716c96bb196

SHA512
a54ea5e74c1320259b23d43e2eaadf83cf0705306df6dd1ba4bd4e9d77889d04449aa5161ad33165814a8b0f7baf41567537b721a048222f655216d1efdca56b

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