Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
Umbral.exe
Resource
win10v2004-20241007-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
05396af5253bb6dd42278b146668faac
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SHA1
44a769f9800ed7675b6b6bd57a6a123b6dc10371
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SHA256
eacb721b092e628a9699924dad19f4ea4ae1f3d7eb5dce85b5dcd16a273cd78b
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SHA512
3283964cff79c4fa5319f92bd429c19b0f99ae4a0f518a15882a132177eba60e2ed2ec0fbcfdf273e7e0be646b4f00cee0298a23bef5a83b1985029845f1b916
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SSDEEP
6144:lloZM+rIkd8g+EtXHkv/iD4FQpTNbYMTiqL9Y0hU9b8e1msBi:noZtL+EP8FQpTNbYMTiqL9Y0h8w
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1301414253722603540/jg-6zDziHcOTDOKtI8ajj94GfsHIjqSlAXLi1SgBHImM2bg01nh8sCJuz98O7QdqPpkO
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