wshrat | f43d3dd0794bb4d89b813dcee1d029b0d743c2da958a0cf690582a2e71c00122

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2024 05:46

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General

Target

MACHINE_SPECIFICATION.js
Size

7KB
MD5

d19beb79e886bf34835533189bf71c47
SHA1

fdfc5ab5e9613fead711101be1f3fb82521c6d32
SHA256

f43d3dd0794bb4d89b813dcee1d029b0d743c2da958a0cf690582a2e71c00122
SHA512

9e386dd16880addfb7f0ef5adbb72eeffae8365191a51631da399e2bb6b12f634c3dfcd878ea5d822a5d901db9014f28489e89e29b7983efcb578bd21010a1ce
SSDEEP

192:pyBl/3sunJVjnnbKe9VPvGulLdPCvUaVsC89ADYZsAPz:IBjTnTl9y1a5z

Score

10^/10

wshrat execution persistence trojan

Malware Config

Extracted

Family

wshrat

http://chongmei33.publicvm.com:7044

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
3	3992	wscript.exe
17	3988	wscript.exe
21	3988	wscript.exe
26	3988	wscript.exe
27	3988	wscript.exe
28	3988	wscript.exe
41	3988	wscript.exe
43	3988	wscript.exe
44	3988	wscript.exe
45	3988	wscript.exe
46	3988	wscript.exe
49	3988	wscript.exe
50	3988	wscript.exe
51	3988	wscript.exe
52	3988	wscript.exe
54	3988	wscript.exe
57	3988	wscript.exe
62	3988	wscript.exe
63	3988	wscript.exe
64	3988	wscript.exe
65	3988	wscript.exe
66	3988	wscript.exe
67	3988	wscript.exe
68	3988	wscript.exe
69	3988	wscript.exe
70	3988	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HVGBJI.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HVGBJI.vbs	wscript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HVGBJI = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\HVGBJI.vbs\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HVGBJI = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\HVGBJI.vbs\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HVGBJI = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\HVGBJI.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HVGBJI = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\HVGBJI.vbs\""	WScript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 3676	3992	wscript.exe	86
PID 3992 wrote to memory of 3676	3992	wscript.exe	86
PID 3676 wrote to memory of 3988	3676	WScript.exe	87
PID 3676 wrote to memory of 3988	3676	WScript.exe	87

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\MACHINE_SPECIFICATION.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\HVGBJI.vbs"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3676
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\HVGBJI.vbs"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    - Adds Run key to start application
    PID:3988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\HVGBJI.vbs

Filesize
253KB

MD5
e0b9a7748f289bbcdac5546c26475fef

SHA1
417f7a2654c86b4a51e4d477246c312d009300c1

SHA256
114913df9d86d36a5541b5b85082eef8c19ce31db3928916a0dda6ec3fac0b68

SHA512
7a432f1ef6c5c09f046b07f7df2b67298589521f7b31e946f28b4d4e3969c4ff5427c40645a4050a54b9d9190286cb63492ec672ec97ceff1fb3c48bbe0715c0

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads