Behavioral task
behavioral1
Sample
Cynosys.exe
Resource
win7-20240221-en
General
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Target
Cynosys.exe
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Size
229KB
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MD5
44712f3532cebbe19d97d59c16baad09
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SHA1
77d521294b8deac4745dab8b843ebc5f875ac26c
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SHA256
6dc0348b0f789df9b0f10d3ec7710be4b968f49c1dd047d3ac5402ad5e14fbd6
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SHA512
06433d35fc99d4cf6b05322659672f41901bb788fde0e89a2e61b32fca33fb67fcf01a69d196adeafa7e90b254d2ca68a805cd612a5e2352fe0a9ba07dbcaf2a
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SSDEEP
6144:lloZMxrIkd8g+EtXHkv/iD4wPAVdLocD0abtIExe5Y+lU8e1mXUi:noZiL+EP84AVdLocD0abtIExUIKd
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1214102511284129822/2e3S4IoZdNw3laTNPYrAsUQzWieHE049sZpVPtuD7KAPbNySo83DvbnGKsEIaVLWnYP0
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 Cynosys.exe
Files
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Cynosys.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: 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