Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240903-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
5ef325936584fbe65e97c89d5787b22b
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SHA1
fbe3db5453a683a05c140de6a48169c683ffdb68
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SHA256
b40b8ae2d3083f53ce18753b29592ba542865938295c4d656ecc649c6038d57b
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SHA512
62db38a9449a7e6bdb0fe26228df1a2a8c9f62a05a28aff043b0e40e0eb2ae91ffc7d765b9fcfd74e981e413ab732f54545fb40ffe7ff0904993ba61fa4c00ad
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SSDEEP
6144:lloZM+rIkd8g+EtXHkv/iD4AiblAmB5K9/Cwhl0B9b8e1mJi:noZtL+EP8AiblAmB5K9/Cwhl0z3
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1327001236427374632/7Pk6g0WQ6MwIEJIF_o_6hmjyc7skzfyqSA-CeUJAscxgUazxLOxY6BmLBp_NipL3KOiW
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: 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