Behavioral task
behavioral1
Sample
Bunifu.Licensing.dll
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Bunifu.Licensing.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
CODEMCFA.exe
Resource
win7-20241010-en
General
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Target
MCFACODEGEN.rar
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Size
1.2MB
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MD5
69e5611ea942cd21a757560655ccacf2
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SHA1
0d2ad44df6dff58c89a6a9c3e6373c99e3b81bfa
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SHA256
6f806a1b18c89c3a482ccfb2b525eae695e9ad7c533b4c503aa1c7f3c29fc71b
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SHA512
51df06538b27c790fe900feff39a226238bec681311eed9ad1e40067010e2496da174f4b8bb91b89ecc96fd614977d94eb3971e9a8d422d19367d8df35168be3
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SSDEEP
24576:NJYoATtIVUnKlWRgMe4xsebNjWjYckZUb1bD+G5A3vIcHP6qAG2eGs1Gb:PA5SUnmThzebNJZUbhKG5iAcv6qAGBy
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1298608602063437835/JyCfJN4kOZTYSMy3p7C0nzjwBZVeXN-s99bZmxGmhCwtA9ugQjsNEeKH7DXCeDl2AAko
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule static1/unpack001/CODEMCFA.exe family_umbral -
Umbral family
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Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
resource yara_rule static1/unpack001/Bunifu.Licensing.dll agile_net -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/Bunifu.Licensing.dll unpack001/CODEMCFA.exe
Files
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MCFACODEGEN.rar.rar
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Bunifu.Licensing.dll.dll windows:4 windows x86 arch:x86
dae02f32a21e03ce65412f6e56942daa
Headers
DLL Characteristics
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_32BIT_MACHINE
IMAGE_FILE_DLL
Imports
mscoree
_CorDllMain
Sections
.text Size: 1.3MB - Virtual size: 1.3MB
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
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CODEMCFA.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: 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