wshrat | 9ff895ca38e2eb401146ca815c8e1cc91bf4dde21e069dbe41603aed7cb5f0bd

Analysis

max time kernel
160s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
10-03-2023 01:42

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General

Target

a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs
Size

267KB
MD5

a4876007d9afb92163ed9933656eacbd
SHA1

8eafbf2887bb39ac089c95b50bf34fd27b7ee36f
SHA256

a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7
SHA512

8db4e28e3e1718416c1a3dfe7d461efd429345621f30bfe2f3b67532e2c26833a53b57a89cd4b3587488bf017926076b12b92ec15e1868babe5ded766cfa335c
SSDEEP

768:NGiZmuiZO+YlWGNOHGxOrBr/kXiFs6d3f9GdsGd+9dP1EC4SV5BW:l

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
23	4068	WScript.exe
37	4068	WScript.exe
40	4068	WScript.exe
53	4068	WScript.exe
54	4068	WScript.exe
65	4068	WScript.exe
80	4068	WScript.exe
85	4068	WScript.exe
86	4068	WScript.exe
87	4068	WScript.exe
89	4068	WScript.exe
93	4068	WScript.exe
94	4068	WScript.exe
95	4068	WScript.exe
97	4068	WScript.exe
98	4068	WScript.exe
99	4068	WScript.exe
100	4068	WScript.exe
101	4068	WScript.exe
102	4068	WScript.exe
103	4068	WScript.exe
104	4068	WScript.exe
105	4068	WScript.exe
106	4068	WScript.exe
107	4068	WScript.exe
108	4068	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.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\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.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\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4068

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\a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7.vbs

Filesize
267KB

MD5
a4876007d9afb92163ed9933656eacbd

SHA1
8eafbf2887bb39ac089c95b50bf34fd27b7ee36f

SHA256
a58c4155a01aab820977ec8d2880edc9408b320f54ec7089db79e50da1b525a7

SHA512
8db4e28e3e1718416c1a3dfe7d461efd429345621f30bfe2f3b67532e2c26833a53b57a89cd4b3587488bf017926076b12b92ec15e1868babe5ded766cfa335c

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