Analysis
- max time kernel
149s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
15/06/2023, 12:30
Static task
static1
Behavioral task
behavioral1
Sample
04371699.vbs
Resource
win7-20230220-en
windows7-x64
1 signatures
150 seconds
Behavioral task
behavioral2
Sample
04371699.vbs
Resource
win10v2004-20230220-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 04371699.vbs
- Size 8KB
- Sample230615-ppfsyagg37
- SHA256 b03c3e78db7276e75dbb30b144d6dba8d417c25a59ea563c5691b5dbdc2b69e9
- MD5 5c75f54e96d8ac97fa9644b0c8bac3d7
- SHA1 668fef3a068cbbdf4c8fc4b81f3b81b4a671460e
- SHA512 d9eb586c09e3b05d6f35b20f56d4ebb3e4b80da490af0894a37d0388f406c819e66c5355297e0acbbe408b2066467e73bb801d360c8501afb975f1aaf868723a
- SSDEEP 48:5AqkDUOQB6D8LD1QOFLDnw30Gwj0H6r5d3bCgDoB:IDLDuDVDdIgDe
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
wshrat
C2
-
http://chongmei33.publicvm.com:7045
Signatures
- Blocklisted process makes network request 17 IoCs
flow pid Process 7 1176 WScript.exe 10 1176 WScript.exe 13 1176 WScript.exe 28 904 WScript.exe 45 904 WScript.exe 47 904 WScript.exe 59 904 WScript.exe 69 904 WScript.exe 72 904 WScript.exe 73 904 WScript.exe 74 904 WScript.exe 76 904 WScript.exe 86 904 WScript.exe 87 904 WScript.exe 88 904 WScript.exe 89 904 WScript.exe 90 904 WScript.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\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\SSYDSS.js WScript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SSYDSS.js WScript.exe - Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\software\microsoft\windows\currentversion\run WScript.exe Set value (str) \REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SSYDSS = "wscript.exe //B 'C:\\Users\\Admin\\AppData\\Local\\Temp\\SSYDSS.js'" WScript.exe Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run WScript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SSYDSS = "wscript.exe //B 'C:\\Users\\Admin\\AppData\\Local\\Temp\\SSYDSS.js'" WScript.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000_Classes\Local Settings WScript.exe - Script User-Agent 10 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 87 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 89 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 69 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 86 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 72 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 73 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 88 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 90 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 28 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript HTTP User-Agent header 45 WSHRAT|A0A385EE|LYVTYGSI|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 15/6/2023|JavaScript - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1176 wrote to memory of 904 1176 WScript.exe 85 PID 1176 wrote to memory of 904 1176 WScript.exe 85
Processes
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\04371699.vbs"1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1176 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\SSYDSS.js"2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:904
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\SSYDSS.js
- Size 539KB
- SHA256 3579c1346320ede28d523e6074c0729d2ae8e64e8e7983161097e733b259a7fd
- MD5 0284159948343867496533e56f590b4f
- SHA1 bc30c2ad6e4c4cc8f931f0b19891a34eab65b06b
- SHA512 1473b7b562f05268ad8b97b713a7b77f7fa9de289ba33d31d3bdadd19f37e9d2e1eccc127ffba44b08c4cd6f87230d67b6ce35aee2a1d291d8e9e960af785882
- SSDEEP 384:cIWtnZWWE4gEggoX8zeWWWWWLHweWWWWWLrkSadao6GfkkHkYfXdXkCZkCvJu9fY:k548HYor5tRZRnnd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SSYDSS.js
- Size 539KB
- SHA256 3579c1346320ede28d523e6074c0729d2ae8e64e8e7983161097e733b259a7fd
- MD5 0284159948343867496533e56f590b4f
- SHA1 bc30c2ad6e4c4cc8f931f0b19891a34eab65b06b
- SHA512 1473b7b562f05268ad8b97b713a7b77f7fa9de289ba33d31d3bdadd19f37e9d2e1eccc127ffba44b08c4cd6f87230d67b6ce35aee2a1d291d8e9e960af785882
- SSDEEP 384:cIWtnZWWE4gEggoX8zeWWWWWLHweWWWWWLrkSadao6GfkkHkYfXdXkCZkCvJu9fY:k548HYor5tRZRnnd
- MD5 SHA1 SHA512 SSDEEP