General
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Target
Umbral.bin.exe.zip
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Size
94KB
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MD5
ae322f488885d2273b3bd43caec90f8a
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SHA1
dd2f4301dd681e87736cb29ba529e02c58239fa1
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SHA256
3eab204e57a51e54418bb1b51a2bfff7ba4b0478ee1625dbc9f49681af9812a4
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SHA512
2df4b92fe93438df1af53ca08978f36fa705c24c05dd380f808f0a4cf630c90d989880631a569f4ab52fcb919fda20e1645a9f42220dd2bf880d3236fb816b50
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SSDEEP
1536:2P1k+P1H3psV9p21kQ4kGFjQiN1EqcsOMiSoobzme9KCpTPWwLHWWmjPtGioJ44T:2Pq+Ptps01kr1gqFmbCUw7WWAs
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1292553414680514621/qkfR1ob7Kv4fi78hXnWXivlpIWfUCKlh6JX0apuJc9KpTbIjTqbRXxI0p4FJkCT5lWk5
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule static1/unpack001/Umbral.bin.exe.bin family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/Umbral.bin.exe.bin
Files
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Umbral.bin.exe.zip.zip
Password: infected
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Umbral.bin.exe.bin.exe windows:4 windows x86 arch:x86
Password: infected
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: 229KB - Virtual size: 229KB
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