Behavioral task
behavioral1
Sample
Update.exe
Resource
win7-20240729-en
General
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Target
Update.exe
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Size
3.0MB
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MD5
2fe71c8b3764c2e139e32d132437bc67
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SHA1
70bdbce5ad67ce24d75bd76b41cb6eecdcc24dc7
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SHA256
7e7f54be771fd2aa38fe215442508a4673163aa87f39eabb7c6cf9de77d1546d
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SHA512
f12e8d338824c18384a300a78a21d88cf7d589d26d06c18d4b6f00f9fc50c567f8ac024990fa69a49323632f82124d2cfc890ba040eaac15934a283029ac2a2d
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SSDEEP
49152:G+1xzMQNZKMx6Y3BfoKTL0lmGlrtWAypQxbno9JnCmoyrZEI0AilFCvxHd:G+1n666WTMXypSbno9JCm
Malware Config
Extracted
orcus
dc.deenote4396.com:10134
3749f50e4c6b4cbfb5eac93f5e5530bb
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autostart_method
TaskScheduler
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enable_keylogger
true
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install_path
%programfiles%\Lenovo\Update.exe
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reconnect_delay
10000
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registry_keyname
Orcus
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taskscheduler_taskname
Lenovo
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watchdog_path
AppData\Lenovo.exe
Signatures
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Orcurs Rat Executable 1 IoCs
resource yara_rule sample orcus -
Orcus family
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Orcus main payload 1 IoCs
resource yara_rule sample family_orcus -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Update.exe
Files
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Update.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
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
Imports
mscoree
_CorExeMain
Sections
.text Size: 3.0MB - Virtual size: 3.0MB
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