Behavioral task
behavioral1
Sample
CortexClient/CortexClient Privat.exe
Resource
win7-20231215-en
General
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Target
26a4b648d7469d84b65452fcc161a7909878df2685910d80085dbb9a69c2cd27
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Size
613KB
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MD5
a1679ed2c4937855207e557a7b77760f
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SHA1
be26e01b16cd550f2548064f922e62cfbbed19d0
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SHA256
26a4b648d7469d84b65452fcc161a7909878df2685910d80085dbb9a69c2cd27
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SHA512
f7cceadba14b8797a60b59c21f1c840fb0a59f38af48d0c2a1f441ac3c1145ed9748cb87148db8fd434f503c5f4c800f679c7a962d181b603cb9fdd5bfda2c60
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SSDEEP
12288:Nk6x7pPGhbMk0cYV70Afixyxdn1cami/JepdnD0OWSS0adp:Nk6x71Sh03zfixEd1P0pGO00adp
Malware Config
Extracted
orcus
5.tcp.eu.ngrok.io:11720
5f51b4303bf4453eb591ad936578c144
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autostart_method
Registry
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enable_keylogger
true
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install_path
%programfiles%\Win32\UpdateSystem32.exe
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reconnect_delay
10000
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registry_keyname
svUpdate
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taskscheduler_taskname
svgost
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watchdog_path
AppData\Windows Defender.exe
Signatures
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Orcurs Rat Executable 1 IoCs
resource yara_rule static1/unpack001/CortexClient/CortexClient Privat.exe orcus -
Orcus family
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Orcus main payload 1 IoCs
resource yara_rule static1/unpack001/CortexClient/CortexClient Privat.exe family_orcus -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/CortexClient/CortexClient Privat.exe
Files
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26a4b648d7469d84b65452fcc161a7909878df2685910d80085dbb9a69c2cd27.zip
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CortexClient/CortexClient Privat.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_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 931KB - Virtual size: 930KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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