General
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Target
DominantExecutor.exe
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Size
235KB
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MD5
cd020f630a72c41f0cac05594e2531a8
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SHA1
5b50eaf7e1a05898b7b83a6e7be6cb828006345a
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SHA256
365f462f95da9ec8d143ca51af88aeb8c9037de86586650288804ae10cc99b27
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SHA512
617876e1fd81f9e41c78cd2ea905bf6ff7b985dc123dba98a031c69172bf8ceb947a7d73495f2cecdbba6c1bb55354b72bcf1446158adcb8ddf045f456ba8174
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SSDEEP
6144:rloZM+rIkd8g+EtXHkv/iD4uA4LbhS6F6AxDeeb9X0b8e1mMx7i:poZtL+EP8uA4LbhS6F6AxDeeb+7xW
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1299078252156948541/7550Q1tgxJx5anCYTTFh4CKPN6ooqp2koK--uLz8yz9w9dcKnvZLvK_HR2-Jc1EbaBtJ
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 DominantExecutor.exe
Files
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DominantExecutor.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: 6KB - Virtual size: 5KB
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