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General
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Target
Umbra1l.bin
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Size
229KB
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MD5
d4b3962331fd69d60450d4bf2a4e082d
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SHA1
e0f0a331505e6a6d33886a450365d1412d34ba19
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SHA256
6a426a8c30989c1f079a3d13b675eb1cd0c888d353a97e0233c8786fb3c2ab86
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SHA512
1273506c488bec41bb3e7da428825a7d39d067a25de8b52a8408623614cdc8894b4a3cfaf1004ec686ceae647224ef3b9021149303b76b5b1266103e6ac0f200
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SSDEEP
6144:tloZMmrIkd8g+EtXHkv/iD44zOjlTwk7diTlwsJgbb8e1mci:voZ1L+EP84zOjlTwk7diTlwsJim
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1335641981073756170/seSOvsSZqaqoC5zgxEHDiCcOuEtW37kL715-jtQomsdu_hU2kpn5cf3wo-E3CcPUcXb9
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 Umbra1l.bin
Files
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Umbra1l.bin.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