wshrat | 3e922156cad894b1d7cfe17e02e90fe0b2c97d7fc8db93b3fde190ddd20a41ad

Analysis

max time kernel
148s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
06-04-2023 18:39

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General

Target

Quotation_230406A.vbs
Size

271KB
MD5

26dd4d56ebc911f4088bff1a4ba6d90d
SHA1

81be8f4ad3eb8061da6722a8e69c4ca67c0c1a66
SHA256

a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a
SHA512

2cb54bd272b2238a2168828e69c39e0c9ed9017690f08130927a71aa89e638419cce3d63e8e582ec151414c8c6bc94a56b2d5e937a56df182914e8ac6e0b3f59
SSDEEP

768:DQsieR2wEfnsuuhjdVex8HWqHBACAaDHfj5BjW:wl

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 21 IoCs

flow	pid	Process
15	4012	WScript.exe
33	4012	WScript.exe
36	4012	WScript.exe
43	4012	WScript.exe
53	4012	WScript.exe
54	4012	WScript.exe
55	4012	WScript.exe
56	4012	WScript.exe
57	4012	WScript.exe
61	4012	WScript.exe
63	4012	WScript.exe
64	4012	WScript.exe
65	4012	WScript.exe
66	4012	WScript.exe
67	4012	WScript.exe
68	4012	WScript.exe
69	4012	WScript.exe
70	4012	WScript.exe
71	4012	WScript.exe
72	4012	WScript.exe
73	4012	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quotation_230406A.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quotation_230406A.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Quotation_230406A = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Quotation_230406A.vbs\""	WScript.exe
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\Quotation_230406A = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Quotation_230406A.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	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\Quotation_230406A.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4012

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\Quotation_230406A.vbs

Filesize
271KB

MD5
26dd4d56ebc911f4088bff1a4ba6d90d

SHA1
81be8f4ad3eb8061da6722a8e69c4ca67c0c1a66

SHA256
a3d0cbb2060021757f2514e9f190b1ac4d7d0ec79bc91351ed7a794ba05cab0a

SHA512
2cb54bd272b2238a2168828e69c39e0c9ed9017690f08130927a71aa89e638419cce3d63e8e582ec151414c8c6bc94a56b2d5e937a56df182914e8ac6e0b3f59

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