Behavioral task
behavioral1
Sample
Umbral.exe
Resource
android-33-x64-arm64-20240624-en
General
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Target
Umbral.exe
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Size
484KB
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MD5
76bdc0aa53bd46fd5eb4c4bbba89e865
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SHA1
5b65000b2503e75e424d8360a40703fb2ff7aa2f
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SHA256
1c400bc43d208e97292438c4ea59e8203c7fb0e78d44b4af7c2b5af3b71c4a4d
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SHA512
cc5365a4ba91f3f0dde1177290cce6c538fb75b4dbee53dc74c9870c1c8a4937b44cc1565045497f1a94a6f5bdc127709246a28793c42574fab46b23d4f8f669
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SSDEEP
12288:MoZrL+EP8njZwR/k4XVG/BcoNiZI8kYFNLQd2nLyNz67:SI8jZwR/k4XVG/BcoNi55MILyM7
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1278684969610252319/yBhsLJdMxB4CMKJHb-dAGghzSPAr0CHcCs4V4WXp7t2rrE6M1zTIuH-KHwgs32LoA0dm
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: 258KB - Virtual size: 258KB
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