Behavioral task
behavioral1
Sample
Umbral3.exe
Resource
win7-20240221-en
General
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Target
Umbral3.exe
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Size
229KB
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MD5
7a902c87a60986f18a6b097712299256
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SHA1
2c01906a39faa9d27a41e0d3cd84e92410b9c483
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SHA256
e4e4f9045dc3683a2a69b9c7625f2ff46ed241ff64b47660a039dbc9d34cb0d5
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SHA512
c8b75b3f0a77d1f84167af3c431e186802ccd5271fc4a361142e0209541de37f5d584d487bf5ea4b4d921e6e3846267fdea9f65cbd71001331bfea08de5425b6
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SSDEEP
6144:tloZMCrIkd8g+EtXHkv/iD4DDUgoOJBiLHaIJtM34b8e1mmi:voZRL+EP8DDUgoOJBiLHaIJtMQI
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1233119648527159317/Az86qBZQwyED_alc1sGO6UWR18PzIJCJX0PM3XdL1VTOwZPXr0B4Rc6-GqAkKUjg4Jn2
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 Umbral3.exe
Files
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Umbral3.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