General
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Target
Cool.exe
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Size
229KB
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MD5
a88da7af6e8d876cdcaf780187aaee84
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SHA1
6ed68b09fa6ff56e96570a19521ecaa05780cd3d
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SHA256
8cd9fd712793b39d1101a1cd37c763c28349a644e6c000a81975a0ae9db48840
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SHA512
925860f9e756735219fe1c0958dfcee0308d5c948ace11203c8b5fb17120014a4026bceb1b1a25d999b1141488608dfe5091ebb1588f1cd01dfbbc499f0ecc75
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SSDEEP
6144:9loZMLrIkd8g+EtXHkv/iD4LJXMJX8Qfx+nJUg1uQb8e1mci:foZ0L+EP8LJXMJX8Qfx+nJUg13i
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1328126053419319428/8yzmzbcH_-8n35wquQ9bYn6EeazVOx_xSd3Mb29bIbQLZk88ne7bW0cUcAe6-c2xt3gU
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 Cool.exe
Files
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Cool.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