Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Umbral.exe
Resource
win10v2004-20240802-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
9c5fa08220a406dd817047dd315c696e
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SHA1
2062fbed265d945daf4937ed0a118378f29a9d66
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SHA256
9c7acf37e5afc9eccc95c482058be6240659038f34a3b1237db66addb8bfe20c
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SHA512
81f7d183f7019c1933ecb755b5c8527c9ad6b8ffba4b7a2999c31696d65d96cc1185918f267dd838e9a64fa7e6ff525e6a0a60e6bfcc2a920f60fe3323f70376
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SSDEEP
6144:lloZMArIkd8g+EtXHkv/iD4suXUYe5xyTXKYZd8cYb8e1mfyi:noZHL+EP8suXUYe5xyTXKYZd8tk
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1284434296307974248/apgRnv-la6w5XAQjQ_35rJCWs9echbhVITEYu9YWpDVtuIvoTC9p2TlmpgUenyuSREq0
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