Behavioral task
behavioral1
Sample
skuld.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
skuld.exe
Resource
win10v2004-20240508-en
General
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Target
skuld.exe
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Size
4.4MB
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MD5
4d8233c2309248eff8f140c546cd4962
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SHA1
436bf754b3044b57dce1c517fe42d9b0c46f1c3f
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SHA256
873cfea5aca550483852549eb4addd5a91490a4a5eb167283b1e2006436e98c3
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SHA512
392e959ed95c78660360cde7bc066e34880b0f56f354a7ab3bea2b88ce37197183ef557ed2602e88d50b614fd54e1d19423b5363cebb4b5245e1833dc72b5a0f
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SSDEEP
98304:gYFloJQ/50hZbP1nA2AfHjrpYcnhHmPCgJxxr0XKRDIt8aJvb+H7:gmoO/5WZT2xfDrucn4CGmwDI2aJvy
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: 10.3MB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 4.4MB - Virtual size: 4.4MB
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