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
be8a080b13f974b263848937951070b4
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SHA1
c04017906c786381ee5c9c5a3a81c9cf21c5d1d7
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SHA256
daa35ab2edbc13b7f37306b80893dac1af18fb05c0d1b9f48c1703c7aeed1fdb
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SHA512
f7a3c1c20d4a2a9311e578671d889b05f2e39e55b3c4c1d92d712ea094dbb27bd50fd57234701ec2e84fb29a106130a2ec968061907c7fbd1b58d4b58665e9df
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SSDEEP
6144:lloZM9rIkd8g+EtXHkv/iD4e0GesyVtG3TOMdRYIiOb8e1mroa6i:noZOL+EP8e0GesyVtG3TOMdRY3y6oa/
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1342909014882914385/GrukMYoKBNjlwCqI89G9zST1hP7MFVtq2R_JYpgGgLWqgTWUjRtYIhOs2pFciMJgoXwL
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