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General
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Target
Umbral.exe
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Size
232KB
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MD5
9f44ee04168dfa82d6cf3e2d618bc7c5
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SHA1
baed535b08c9b48ca13d6a63c0f2a3f5ba144746
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SHA256
bb4f17ec844fb9f40753d03c1a1ac29f239b7821295cef98180091b5de173f05
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SHA512
41d9bd4c0d6d968dbde2e037798a054c92539be7b4e9fa7eee638ea6a7e1eb7ffb76ad49dd8307139d302ad39104efadf438e2d45936abda944585a69e879bd7
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SSDEEP
6144:BloZM+rIkd8g+EtXHkv/iD4Z1LCv8e1mpkni:zoZtL+EP8ZiVi
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1282599058384490550/kpCZj65-Cw0t04pQ38GT4ov30gz20YGKM49DS7o_zNel4XJUYzhXoih9IOmtmiSfx-CA
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: 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