Analysis
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max time kernel
141s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
08-02-2024 16:08
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231215-en
General
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Target
file.exe
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Size
914KB
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MD5
c9b1f9e57bf2dbc30e4fa277ce690be0
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SHA1
08db2e77e4631ba758988b9ece9c44ec7531a9ea
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SHA256
786a9cf7ceaa5f95907624ad42193b1a9581b56eac4689374a68f0cd6069f0f6
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SHA512
a0497f8e06674749c7d9ff875c1f2fd6b0398328393304bc07883cb63f65af5460cb8966e62917a72c09b3b4f57c060e27f93615bac3c2d898ddc0ffb1ae86f0
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SSDEEP
24576:3W64MROxnFD3orXYf1rrcI0AilFEvxHPHooX:3KMiJhrrcI0AilFEvxHP
Malware Config
Extracted
orcus
4.tcp.eu.ngrok.io:15428
0133d229c4e24006957c0e4ab3a52531
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autostart_method
Registry
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enable_keylogger
true
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install_path
%programfiles%\\gcc\gcc.exe
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reconnect_delay
10000
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registry_keyname
System3222
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taskscheduler_taskname
System3222
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watchdog_path
AppData\Sys322.exe
Signatures
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Orcus main payload 2 IoCs
resource yara_rule behavioral2/files/0x000600000002314f-40.dat family_orcus behavioral2/files/0x000600000002314f-49.dat family_orcus -
Orcurs Rat Executable 3 IoCs
resource yara_rule behavioral2/memory/976-1-0x0000000000470000-0x000000000055A000-memory.dmp orcus behavioral2/files/0x000600000002314f-40.dat orcus behavioral2/files/0x000600000002314f-49.dat 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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation file.exe -
Executes dropped EXE 3 IoCs
pid Process 4992 WindowsInput.exe 4420 WindowsInput.exe 4432 gcc.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\WindowsInput.exe file.exe File created C:\Windows\SysWOW64\WindowsInput.exe.config file.exe File created C:\Windows\SysWOW64\WindowsInput.InstallState WindowsInput.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\gcc\gcc.exe file.exe File opened for modification C:\Program Files (x86)\gcc\gcc.exe file.exe File created C:\Program Files (x86)\gcc\gcc.exe.config file.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 976 wrote to memory of 4992 976 file.exe 84 PID 976 wrote to memory of 4992 976 file.exe 84 PID 976 wrote to memory of 4432 976 file.exe 86 PID 976 wrote to memory of 4432 976 file.exe 86 PID 976 wrote to memory of 4432 976 file.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:976 -
C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:4992
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C:\Program Files (x86)\gcc\gcc.exe"C:\Program Files (x86)\gcc\gcc.exe"2⤵
- Executes dropped EXE
PID:4432
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:4420
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
914KB
MD5c9b1f9e57bf2dbc30e4fa277ce690be0
SHA108db2e77e4631ba758988b9ece9c44ec7531a9ea
SHA256786a9cf7ceaa5f95907624ad42193b1a9581b56eac4689374a68f0cd6069f0f6
SHA512a0497f8e06674749c7d9ff875c1f2fd6b0398328393304bc07883cb63f65af5460cb8966e62917a72c09b3b4f57c060e27f93615bac3c2d898ddc0ffb1ae86f0
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Filesize
640KB
MD503f5e1f51a403f1bc55f972dd41d25e8
SHA1ea9a2b847d86f5b7ffe5fc5bb314b73f5d2437f4
SHA256a63c391ed152fdd4ba39af6bafafd8dcc4c6d8f072147d1e8401ec6775f74e4b
SHA5122182ca42769aa3ac428d2fd001a81730e26ff6da5f5277cb3e157c0130b91eb75fe93c8c0882a38a9bb0ba0f71470fcd3c761038b5fe7bb32abc8edca30a8e43
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Filesize
21KB
MD5e6fcf516d8ed8d0d4427f86e08d0d435
SHA1c7691731583ab7890086635cb7f3e4c22ca5e409
SHA2568dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e
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Filesize
357B
MD5a2b76cea3a59fa9af5ea21ff68139c98
SHA135d76475e6a54c168f536e30206578babff58274
SHA256f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad