Analysis
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max time kernel
93s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
21-02-2025 18:46
Behavioral task
behavioral1
Sample
slinky.exe
Resource
win7-20240903-en
windows7-x64
0 signatures
150 seconds
Behavioral task
behavioral2
Sample
slinky.exe
Resource
win10v2004-20250217-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
slinky.exe
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Size
14.8MB
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MD5
58bc5cc47fa258cd1be97ee171a551d6
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SHA1
d359a53319cd2d6da314b1d3d3626c9d2f455f8d
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SHA256
28d351252216d3ac879ed61553fabb73ba58890ad1a603ecf23083e07dc00612
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SHA512
2e7de308bce8865dcca1ca25c78d0be9128ad4efe0f48a7e4216c04822b07325964bfb2a0958952f10e155e510a450bbab113cf2e92a7a0017bf05335676ab55
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SSDEEP
196608:DqZ4f/oCqKqc/3h4Po9NXx+29GAB7ob73mrVGwYdNE2vfUW:OZ4XoBKHN9AuM73gQDvfUW
Score
10/10
Malware Config
Extracted
Family
skuld
C2
https://ptb.discord.com/api/webhooks/1342388168812527616/-lRZ8Lzq0-yW-y8xBH1Y_PX4RtQflysH7EEHAsl_JbK32v8hRM3xrYRbVdzoiRn3xwmE
Signatures
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Skuld family
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe" slinky.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 1 api.ipify.org 2 api.ipify.org 7 ip-api.com -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 9 Go-http-client/1.1 -
Modifies system certificate store 2 TTPs 3 IoCs
description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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 slinky.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C slinky.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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 slinky.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 4528 slinky.exe Token: SeIncreaseQuotaPrivilege 2868 wmic.exe Token: SeSecurityPrivilege 2868 wmic.exe Token: SeTakeOwnershipPrivilege 2868 wmic.exe Token: SeLoadDriverPrivilege 2868 wmic.exe Token: SeSystemProfilePrivilege 2868 wmic.exe Token: SeSystemtimePrivilege 2868 wmic.exe Token: SeProfSingleProcessPrivilege 2868 wmic.exe Token: SeIncBasePriorityPrivilege 2868 wmic.exe Token: SeCreatePagefilePrivilege 2868 wmic.exe Token: SeBackupPrivilege 2868 wmic.exe Token: SeRestorePrivilege 2868 wmic.exe Token: SeShutdownPrivilege 2868 wmic.exe Token: SeDebugPrivilege 2868 wmic.exe Token: SeSystemEnvironmentPrivilege 2868 wmic.exe Token: SeRemoteShutdownPrivilege 2868 wmic.exe Token: SeUndockPrivilege 2868 wmic.exe Token: SeManageVolumePrivilege 2868 wmic.exe Token: 33 2868 wmic.exe Token: 34 2868 wmic.exe Token: 35 2868 wmic.exe Token: 36 2868 wmic.exe Token: SeIncreaseQuotaPrivilege 2868 wmic.exe Token: SeSecurityPrivilege 2868 wmic.exe Token: SeTakeOwnershipPrivilege 2868 wmic.exe Token: SeLoadDriverPrivilege 2868 wmic.exe Token: SeSystemProfilePrivilege 2868 wmic.exe Token: SeSystemtimePrivilege 2868 wmic.exe Token: SeProfSingleProcessPrivilege 2868 wmic.exe Token: SeIncBasePriorityPrivilege 2868 wmic.exe Token: SeCreatePagefilePrivilege 2868 wmic.exe Token: SeBackupPrivilege 2868 wmic.exe Token: SeRestorePrivilege 2868 wmic.exe Token: SeShutdownPrivilege 2868 wmic.exe Token: SeDebugPrivilege 2868 wmic.exe Token: SeSystemEnvironmentPrivilege 2868 wmic.exe Token: SeRemoteShutdownPrivilege 2868 wmic.exe Token: SeUndockPrivilege 2868 wmic.exe Token: SeManageVolumePrivilege 2868 wmic.exe Token: 33 2868 wmic.exe Token: 34 2868 wmic.exe Token: 35 2868 wmic.exe Token: 36 2868 wmic.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4528 wrote to memory of 4988 4528 slinky.exe 85 PID 4528 wrote to memory of 4988 4528 slinky.exe 85 PID 4528 wrote to memory of 3716 4528 slinky.exe 86 PID 4528 wrote to memory of 3716 4528 slinky.exe 86 PID 4528 wrote to memory of 2868 4528 slinky.exe 89 PID 4528 wrote to memory of 2868 4528 slinky.exe 89 -
Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 3716 attrib.exe 4988 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\slinky.exe"C:\Users\Admin\AppData\Local\Temp\slinky.exe"1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4528 -
C:\Windows\system32\attrib.exeattrib +h +s C:\Users\Admin\AppData\Local\Temp\slinky.exe2⤵
- Views/modifies file attributes
PID:4988
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C:\Windows\system32\attrib.exeattrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe2⤵
- Views/modifies file attributes
PID:3716
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C:\Windows\System32\Wbem\wmic.exewmic csproduct get UUID2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2868
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
14.8MB
MD558bc5cc47fa258cd1be97ee171a551d6
SHA1d359a53319cd2d6da314b1d3d3626c9d2f455f8d
SHA25628d351252216d3ac879ed61553fabb73ba58890ad1a603ecf23083e07dc00612
SHA5122e7de308bce8865dcca1ca25c78d0be9128ad4efe0f48a7e4216c04822b07325964bfb2a0958952f10e155e510a450bbab113cf2e92a7a0017bf05335676ab55