Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240903-en
General
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Target
Umbral.exe
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Size
230KB
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MD5
d36aaa797c0db93779d1e7d23deb0ea1
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SHA1
8c43cdc2bbd58bde7e445a9b26a745d091c93c5c
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SHA256
d59f40a7e459e4f03cfafe017c0f9433714f8530757a674976a5dcc2bc68618d
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SHA512
cf192d81fb909a91b989e50b7c0bb1092f130b3394b4205ce46afa9f2070f17a6461366dbad7bbc721d8449facaf2864203d274afcd95b65d3420070c0adb9e7
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SSDEEP
6144:lloZM+rIkd8g+EtXHkv/iD4OGsLCg/7IiR0STTKEJ/b8e1mVni:noZtL+EP8OGsLCg/7IiR0STTKE1r
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1310617325795409993/1ykImeKgv3Vc2UElSv3KNdH7im9MlPSuoF5i7zhbWdBxqWKHpWMuW_lcWK4xs8Wnk9Wz
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: 227KB
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