Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240220-en
General
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Target
Umbral.exe
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Size
227KB
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MD5
9373f372b640980c2c21635ea1d0e198
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SHA1
4a839ba396c68479c9b78cbfd1ea9005c9c1840e
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SHA256
1d4614f2beab6bab69464e7cf41e34db255e42a9b8d754d598faa0b9ec4d7b99
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SHA512
9a6db6f4a87666e9789273027217d9656257917f530b36c60f9e026bbc9ef2229f66718b6365d0691ec254e153a537bfa1c577f7df4d588218b3c110ffbd46d8
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SSDEEP
6144:+loZM+rIkd8g+EtXHkv/iD4SRLvW0b3c5NImHHm9cb8e1m6i:ooZtL+EP8SRLvW0b3c5NImHHmec
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1256869688487710730/3Fj510GAhIc5eHrXmSNeNQgCXtDIkrV654Xp5RicQTcyuhg2Jty3efrsKc3zfTViSvsg
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 Umbral.exe
Files
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Umbral.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: 224KB - Virtual size: 224KB
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