Analysis
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max time kernel
95s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
11-01-2025 04:35
Behavioral task
behavioral1
Sample
skuld.exe
Resource
win7-20240903-en
windows7-x64
0 signatures
150 seconds
Behavioral task
behavioral2
Sample
skuld.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
4 signatures
150 seconds
General
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Target
skuld.exe
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Size
9.9MB
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MD5
ac154708d404e8b4c7ffb4adbc894a3f
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SHA1
4ebc8ca32f3d0758824a67fb4d406f118820a840
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SHA256
d8dd27eea50881e5452e6ebf64677af426c61fcba3217d455fe544a518d6f09e
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SHA512
69cd284f8871a1bc7685c4faafd9e9da21e460f9fa261c60bcfeb3e96e4b60ff49f906544a3a06a911423a336f1cd01f54022db07c7067ee2ee7fb40ea254906
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SSDEEP
98304:ZIs9QsgBxNPYG+sc9IcfbsF0EX3+EHWGgbZmY2zK:ZIKgBxNwGW/bsF04372Qz
Score
6/10
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe" skuld.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1472 skuld.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1472 wrote to memory of 4232 1472 skuld.exe 84 PID 1472 wrote to memory of 4232 1472 skuld.exe 84 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4232 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\skuld.exe"C:\Users\Admin\AppData\Local\Temp\skuld.exe"1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1472 -
C:\Windows\system32\attrib.exeattrib +h +s C:\Users\Admin\AppData\Local\Temp\skuld.exe2⤵
- Views/modifies file attributes
PID:4232
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