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Behavioral task
behavioral1
Sample
Umbral1.exe
Resource
win7-20240903-en
General
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Target
Umbral1.exe
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Size
221KB
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MD5
fe655b03add462121d67240f461e8787
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SHA1
73907706fdf7922ba19a27f4b1fd315f7c107efe
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SHA256
dccdba44701fbf3031e6a2ad016cb702c7941ca2abbc754ba60b1d0ca5396e82
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SHA512
c00653793e37dee5b4bdc5cbd0194038928e03dfb8a3e8910c54d8c20133e163c59c36fb6989c180c3fb9e39e9a37d3544292f55fd92367749e7fa143c4c8b7b
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SSDEEP
6144:KloZMUrIkd8g+EtXHkv/iD439sJNlK8euYi:0oZrL+EP8Na
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1338864679413612690/az7gaYeiU1_nRKVRHkmFzjNO2o2mDOiEqjxYZZ60NRhP6I8SyvMa2cmFPyYkFBXYOt8R
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 Umbral1.exe
Files
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Umbral1.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_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 219KB - Virtual size: 218KB
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