Behavioral task
behavioral1
Sample
file_out.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
file_out.exe
Resource
win10v2004-20240802-en
General
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Target
file_out.exe
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Size
214KB
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MD5
a23841ed39cc3b09d4e731a80e2d70a6
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SHA1
89f95246610063d67db46554f9d4ac61b8c45e02
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SHA256
e1663465701c284caff2ef4acd4649efb4aae0b9d935da69766dca2c019bcd0f
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SHA512
1a6c9478beccf81c1371bb59a7c7854d7f19481747705419e5816e42271b526469c74e06b66910514cc5385a69819cc86016ede8b0ccd970976ac59d52afffa5
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SSDEEP
3072:1lP/chtWkOIGSSvDvPnsUSCpjli8vRXfOZ44lllllj0em1Sl8eN7bqXBptXT5j/:bcyHIGNsUSUBvRty8eNH8pR
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1087006813825802300/3wUHLU9aZjQ8FO3D6nxGMiHOkFOXdcgPlzsn0-BiZ65SuyOgTOcIixqUH-JEOCn0w142
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 file_out.exe
Files
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file_out.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: 212KB - Virtual size: 212KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1024B - Virtual size: 864B
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