General
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Target
Umbral.exe
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Size
231KB
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MD5
dae35caa4639b153b0531ec0ed895a79
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SHA1
03326ba6ddbc338f6165697e86a1439826c7af2b
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SHA256
23f54c809daf84b074a3286df27497739b43f5f98a521e29050a5083f2d405e7
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SHA512
a270a4212187e2292f1b9884c916232fbabfdc45356a32896150c7b7d93a3d9abe173281bff90f7ab35654abce82cba9c55ebeb98de8c612241277ea48bc5d12
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SSDEEP
6144:xloZM+rIkd8g+EtXHkv/iD4bhIqlZ8e1mKgi:DoZtL+EP8v7/
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1275720614551883826/vuNizSZ740IKG41dpOGRQ8sBT4W3nJJfbP7siP2Rhxa8jA_bgZRZCXjRe0cbnqdoARSM
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: 228KB - Virtual size: 228KB
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