Behavioral task
behavioral1
Sample
payload.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
payload.exe
Resource
win10v2004-20230703-en
General
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Target
payload.exe
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Size
226KB
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MD5
c7b0bf5c137eb3a501094638b9318933
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SHA1
230e462cbcf038e8f692286f3c660815d49c8e14
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SHA256
39f9bb3017c4439683731bb4c4931a955696de15efab8b05cad4c2142d51e376
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SHA512
7d3dd963dfba5bef0a9ece912a34b89ac43b1647c0ae60f3ec2034d8b2b395fef76743e72bcb9726b512fc10f88f04d46d2851e53cdaa74adcb65ffc2a16d2a5
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SSDEEP
6144:+loZM+rIkd8g+EtXHkv/iD4n6rk/1+mplsl3ySX6Eb8e1maic:ooZtL+EP8n6rk/1+mplsl3ySX30c
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1143115606330200074/pyKgc8H0hMiolN7TnRv_a5UZxMEV9hMyMPcyMEE79xLCjkKRbFA2ce8qYJuxmfb_M-83
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 payload.exe
Files
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payload.exe.exe windows 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: 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