Analysis
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max time kernel
0s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
06-06-2024 01:35
Behavioral task
behavioral1
Sample
65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe
Resource
win7-20240221-en
General
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Target
65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe
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Size
910KB
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MD5
c8bafcd4b39e5dc2776046134a2adaa4
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SHA1
0ee1d413e568575eaa12f13cf7745c6c5cb3195b
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SHA256
65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25
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SHA512
9b410d05fe3fec2e403daf3f3de6c448896f6485002779b6d0b52baa759c27062ac435a6af4e89fc35075ef65e427a5b55d79785e37e0c5d70453202ca9a68ce
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SSDEEP
24576:lam4MROxnFrYurWrrcI0AilFEvxHPyEooP:lOMijWrrcI0AilFEvxHP
Malware Config
Extracted
orcus
77.232.132.25:10111
ae5c58dd87ee40dbaebadd5cfbc3eb84
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autostart_method
Disable
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enable_keylogger
false
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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
Orcus
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watchdog_path
AppData\OrcusWatchdog.exe
Signatures
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Orcurs Rat Executable 1 IoCs
resource yara_rule behavioral2/memory/1096-1-0x0000000000FD0000-0x00000000010BA000-memory.dmp orcus -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation 65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe -
Executes dropped EXE 1 IoCs
pid Process 2232 WindowsInput.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\WindowsInput.exe 65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe File created C:\Windows\SysWOW64\WindowsInput.exe.config 65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1096 wrote to memory of 2232 1096 65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe 84 PID 1096 wrote to memory of 2232 1096 65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe"C:\Users\Admin\AppData\Local\Temp\65c4f77289ad4832397b69edd0b3ecedb3d50588e9735b1dd8fc12496bff1c25.exe"1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1096 -
C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
PID:2232
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵PID:1104
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
21KB
MD5e6fcf516d8ed8d0d4427f86e08d0d435
SHA1c7691731583ab7890086635cb7f3e4c22ca5e409
SHA2568dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e
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Filesize
357B
MD5a2b76cea3a59fa9af5ea21ff68139c98
SHA135d76475e6a54c168f536e30206578babff58274
SHA256f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad