General
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Target
csrss.exe
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Size
915KB
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MD5
9edc8a7beb5cd20a12f306308d9bcc77
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SHA1
66904d048fa464f0ba3443a582f0a909c3cff140
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SHA256
3cb4efecf87208f429ab7186fb10d10998f3534cfec8e277019b6fff53caa7ef
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SHA512
55087802c715a3320b99608aa67cb79fe6c5ec3ff3a6f7e21261020575bc98d2b555da9908fd282d77bbf8df635fa1ce7133600e2cc86a5bc855f137679e3675
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SSDEEP
24576:vUU4MROxnFD3KrXYf1rrcI0AilFEvxHPVooH:viMiJHrrcI0AilFEvxHP
Malware Config
Extracted
orcus
CC
127.0.0.1:10134
8e9cad03731d44e4aea90236e8356123
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autostart_method
TaskScheduler
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enable_keylogger
true
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install_path
%programfiles%\Orcus\Orcus.exe
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reconnect_delay
10000
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registry_keyname
Orcus
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taskscheduler_taskname
csrss
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watchdog_path
Temp\csrss.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
Files
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csrss.exe.exe windows 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: 912KB - Virtual size: 912KB
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