General
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Target
CairoSetup_64bit.exe
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Size
3.5MB
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Sample
230331-tkdv1abd59
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MD5
1f69e8a557b018eaacbe77d7242095ef
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SHA1
afd6f7fc776979f0ff4e36aa243b3a56ba8489e4
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SHA256
c84ce4f35dfe0ada475f680551d653d264855a1d477ead3af5c0564e8b74a4a7
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SHA512
73c690204af95930e27b29f704f6802ef67a545bbbb41309b70ba5a67b8e3335bab5f6ba6bf7cb72679d4c9c648dff519a1c0c582442a2f955a1b409b30eb984
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SSDEEP
49152:6pDzGV9EVA5Nm2VkrORk8+hJplCe7ye1sCqkrH0RKOrCbpS/vFdQ1aNv:6JzGIVATZV7RkplyWq6XOrGS3Qkv
Static task
static1
Behavioral task
behavioral1
Sample
CairoSetup_64bit.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
CairoSetup_64bit.exe
Resource
win10v2004-20230220-en
Malware Config
Targets
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Target
CairoSetup_64bit.exe
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Size
3.5MB
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MD5
1f69e8a557b018eaacbe77d7242095ef
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SHA1
afd6f7fc776979f0ff4e36aa243b3a56ba8489e4
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SHA256
c84ce4f35dfe0ada475f680551d653d264855a1d477ead3af5c0564e8b74a4a7
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SHA512
73c690204af95930e27b29f704f6802ef67a545bbbb41309b70ba5a67b8e3335bab5f6ba6bf7cb72679d4c9c648dff519a1c0c582442a2f955a1b409b30eb984
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SSDEEP
49152:6pDzGV9EVA5Nm2VkrORk8+hJplCe7ye1sCqkrH0RKOrCbpS/vFdQ1aNv:6JzGIVATZV7RkplyWq6XOrGS3Qkv
Score10/10-
Modifies WinLogon for persistence
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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