Behavioral task
behavioral1
Sample
skuld.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
skuld.exe
Resource
win10v2004-20240426-en
General
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Target
skuld.exe
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Size
4.5MB
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MD5
40ddd7a295ae6555997f96df3d6f024d
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SHA1
b06392b82b20dc6f816afdc7722897604403f2af
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SHA256
83afb002d227f6ba2e3d158cbd62ffd6fa1de65d290827be5ecdd791a43a5648
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SHA512
eb9c4be2ad0ee3d6989dcd8ff0a78676fea7dfe6597b5c82e4102061f985dfc37faf9970b926995c89b5588f6593f370c730f579018686498f7e1f4d8680f8cb
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SSDEEP
98304:9VtcED6RSelpK+wp+jIhuigow2caVMOyIipQxXXwmi:afRSelpU+dPow2caiOyIipQxpi
Malware Config
Signatures
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resource yara_rule sample upx -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource skuld.exe
Files
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skuld.exe.exe windows:6 windows x64 arch:x64
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Sections
UPX0 Size: - Virtual size: 11.2MB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 4.5MB - Virtual size: 4.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX2 Size: 512B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE