Behavioral task
behavioral1
Sample
proxy.exe
Resource
win7-20231215-en
General
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Target
proxy.exe
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Size
246KB
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MD5
4ef1cda1badeab461aa59991f9499754
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SHA1
418fb087216cc11b6981a386fe4de673b089c3d8
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SHA256
4656d69359cd36909ffafde605da9acaa44f231465c2cf04083f312997a79143
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SHA512
2b4e6bcf02e18c8db8a703a109581928cdb741409e3b122a2fbdd387bac0aa8bcbcdc3e9b4673fe8309f1c885eed51b1feae505b18ccacfe9879712cf81aaf72
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SSDEEP
6144:ploZM+rIkd8g+EtXHkv/iD4EXNmxfEY3vmfh8It2qI8e1mZi:boZtL+EP8EXNmxfEY3vmfh8ItcH
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1157726362107400293/c6ZEwEOFH8dHCfi4HquKbcfsRWMiQKK9L9XovoVHUUKxMY51EPd2dS1MpKFqF1hr-Bkq
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 proxy.exe
Files
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proxy.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: 227KB - Virtual size: 226KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 18KB - Virtual size: 18KB
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