wshrat | 3dbe569606e7cb9d93ad9f5bb8135fb9e6faf2d525c365dbc0eb672a45419ff9

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231127-en
resource tags

arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2023 12:58

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General

Target

SA___CS_Purchase_Order.xls.js
Size

7KB
MD5

516442412f0c621f39abd64b645f587c
SHA1

20565fcbcf30ced136c6e6a9c6539a139f610233
SHA256

3dbe569606e7cb9d93ad9f5bb8135fb9e6faf2d525c365dbc0eb672a45419ff9
SHA512

3d96d973e3a1a6bca2cdd982e50524c3d1b79df03eedd1165ecae94d408fdd12a1f14a9b4fb7660f71e0be912ba469e1e4f88b42f8f6c66758f8e2d16342b1e6
SSDEEP

48:MOIWNECVZvY3thH1S4T0O2NiIVEggU3mOOFANEeoTmKaU9Osxi4OcKGE+G:zYCVZ+FTbmVEgg+u9Ny8MXV+G

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 27 IoCs

flow	pid	Process
7	3732	wscript.exe
16	3732	wscript.exe
39	324	WScript.exe
54	324	WScript.exe
60	324	WScript.exe
61	324	WScript.exe
64	324	WScript.exe
76	324	WScript.exe
79	324	WScript.exe
80	324	WScript.exe
81	324	WScript.exe
82	324	WScript.exe
87	324	WScript.exe
88	324	WScript.exe
89	324	WScript.exe
93	324	WScript.exe
94	324	WScript.exe
95	324	WScript.exe
96	324	WScript.exe
97	324	WScript.exe
101	324	WScript.exe
102	324	WScript.exe
103	324	WScript.exe
104	324	WScript.exe
105	324	WScript.exe
110	324	WScript.exe
111	324	WScript.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-3635043082-2972811465-3176142135-1000\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\HVVVOU.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HVVVOU.vbs	WScript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3635043082-2972811465-3176142135-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HVVVOU = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\HVVVOU.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HVVVOU = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\HVVVOU.vbs\""	WScript.exe

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-1-5-21-3635043082-2972811465-3176142135-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3732 wrote to memory of 324	3732	wscript.exe	90
PID 3732 wrote to memory of 324	3732	wscript.exe	90

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\SA___CS_Purchase_Order.xls.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3732
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\HVVVOU.vbs"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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\HVVVOU.vbs

Filesize
257KB

MD5
4d09dbc70709eb2790c491dc476d508b

SHA1
605728acfd07b053024b1cbd83950deaf3c0bbdc

SHA256
8939bff041d3968fe34dd5ded9c609364d0c5f2989ff60b1703a8c557fe09d84

SHA512
db4b822056704b8738acdf71b0a7e3ca86ddb72b888f87018e06360cfb54159eeeabdd843332ada1eba9b4d3125c35de5d0d86c4a0f808aeb803e1621dd396c4

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads