General
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Target
SteamtoolsSetup.exe
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Size
837KB
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Sample
241225-rcvsfavlhr
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MD5
93ef55f275e12608889ba7c2e908e6d8
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SHA1
969a31955b49a8bd82567fa582b3f29528ceb6f1
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SHA256
7af03f9f3e8d96c931d69b1ecd531ee976c6e504d678bbf44f553ffea8943291
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SHA512
fa3dfb36608777a5942cc3ffdb5d1599efd0420dbd436def11d860312b6dff64af6d9c3022964c78eaf34c3173a8907a3b58e88fda8f83a4e8e4063287ba7c53
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SSDEEP
12288:GkNPWVmcf59WoYuEfR9hdAPS/OaoKDXE65hBWeSjpb1Bs7+5oQEEeTX:GGhu27maoKD0jeIpfs7xQAT
Static task
static1
Behavioral task
behavioral1
Sample
SteamtoolsSetup.exe
Resource
win10ltsc2021-20241211-en
Malware Config
Targets
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Target
SteamtoolsSetup.exe
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Size
837KB
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MD5
93ef55f275e12608889ba7c2e908e6d8
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SHA1
969a31955b49a8bd82567fa582b3f29528ceb6f1
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SHA256
7af03f9f3e8d96c931d69b1ecd531ee976c6e504d678bbf44f553ffea8943291
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SHA512
fa3dfb36608777a5942cc3ffdb5d1599efd0420dbd436def11d860312b6dff64af6d9c3022964c78eaf34c3173a8907a3b58e88fda8f83a4e8e4063287ba7c53
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SSDEEP
12288:GkNPWVmcf59WoYuEfR9hdAPS/OaoKDXE65hBWeSjpb1Bs7+5oQEEeTX:GGhu27maoKD0jeIpfs7xQAT
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Adds Run key to start application
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Modify Registry
2Subvert Trust Controls
2Install Root Certificate
1SIP and Trust Provider Hijacking
1