General
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Target
Fixer1.exe
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Size
229KB
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MD5
c983a88386a45445f30fefba68596cb0
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SHA1
98448dca5a7d9d893148f361401260f600c082de
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SHA256
fff5e75a847e42b873cc8af76960e9ef47ff8e2f23055c52af4f304541440cec
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SHA512
d76a25f7f037aaf4e4a820836434d080d7fa7188afbbb7810c724ab8a4da13b88ac407c85d04b59074d6ab0f448879dfcc13d1e14f807fcb8ec16320da0a8ef9
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SSDEEP
6144:9loZM+rIkd8g+EtXHkv/iD4I/DAecjfUH1gevPeNtb8e1moBi:foZtL+EP8I/DAecjfUH1gevPenxY
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1245418252000297030/sohxyziMpQVyaeSEXBZZM0dc4NW8GkmWsUqGfGiHIlYs8Nm7PV5Y4S0Zww_h8eVLHDlX
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Fixer1.exe
Files
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Fixer1.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 227KB - Virtual size: 226KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ