Analysis
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max time kernel
330s -
max time network
326s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
08-02-2024 15:58
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231215-en
General
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Target
file.exe
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Size
914KB
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MD5
c6d06917e01beb93e4bad79537df2eb7
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SHA1
927d7c8e85f740e35161a5de831771160d81cb95
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SHA256
c4288fddf7805d6ecfe23adb3f4b687f69d6848d790d4abc672324581a1d0a73
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SHA512
082ba84dd4d1c1e7ba34077f5d3cacfdf02c2b904d7cdb73ed59269b734c802e817e18ece928c021a0e05c54b497da168dcd1a830148032dff3b19c354bab0cb
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SSDEEP
24576:eW64MROxnFD3orXYf1rrcI0AilFEvxHPtooX:eKMiJhrrcI0AilFEvxHP
Malware Config
Extracted
orcus
7.tcp.eu.ngrok.io:17912
0133d229c4e24006957c0e4ab3a52531
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autostart_method
Registry
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enable_keylogger
true
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install_path
%programfiles%\Win64\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 1 IoCs
resource yara_rule behavioral1/files/0x000700000001422b-27.dat family_orcus -
Orcurs Rat Executable 3 IoCs
resource yara_rule behavioral1/memory/832-0-0x00000000009A0000-0x0000000000A8A000-memory.dmp orcus behavioral1/files/0x000700000001422b-27.dat orcus behavioral1/memory/2716-33-0x0000000000E50000-0x0000000000F3A000-memory.dmp orcus -
Executes dropped EXE 7 IoCs
pid Process 2764 WindowsInput.exe 2732 WindowsInput.exe 2716 gcc.exe 1996 gcc.exe 2908 Sys322.exe 1676 Sys322.exe 2968 gcc.exe -
Loads dropped DLL 3 IoCs
pid Process 832 file.exe 832 file.exe 2716 gcc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\System3222 = "\"C:\\Program Files (x86)\\Win64\\gcc.exe\"" gcc.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
flow ioc 28 7.tcp.eu.ngrok.io 2 7.tcp.eu.ngrok.io 9 7.tcp.eu.ngrok.io 14 7.tcp.eu.ngrok.io 21 7.tcp.eu.ngrok.io -
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)\Win64\gcc.exe.config file.exe File created C:\Program Files (x86)\Win64\gcc.exe file.exe File opened for modification C:\Program Files (x86)\Win64\gcc.exe file.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1676 Sys322.exe 1676 Sys322.exe 1676 Sys322.exe 2716 gcc.exe 2716 gcc.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe 1676 Sys322.exe 2716 gcc.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2716 gcc.exe Token: SeDebugPrivilege 2908 Sys322.exe Token: SeDebugPrivilege 1676 Sys322.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2716 gcc.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2716 gcc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2716 gcc.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 832 wrote to memory of 2764 832 file.exe 28 PID 832 wrote to memory of 2764 832 file.exe 28 PID 832 wrote to memory of 2764 832 file.exe 28 PID 832 wrote to memory of 2764 832 file.exe 28 PID 832 wrote to memory of 2716 832 file.exe 30 PID 832 wrote to memory of 2716 832 file.exe 30 PID 832 wrote to memory of 2716 832 file.exe 30 PID 832 wrote to memory of 2716 832 file.exe 30 PID 2136 wrote to memory of 1996 2136 taskeng.exe 32 PID 2136 wrote to memory of 1996 2136 taskeng.exe 32 PID 2136 wrote to memory of 1996 2136 taskeng.exe 32 PID 2136 wrote to memory of 1996 2136 taskeng.exe 32 PID 2716 wrote to memory of 2908 2716 gcc.exe 33 PID 2716 wrote to memory of 2908 2716 gcc.exe 33 PID 2716 wrote to memory of 2908 2716 gcc.exe 33 PID 2716 wrote to memory of 2908 2716 gcc.exe 33 PID 2908 wrote to memory of 1676 2908 Sys322.exe 34 PID 2908 wrote to memory of 1676 2908 Sys322.exe 34 PID 2908 wrote to memory of 1676 2908 Sys322.exe 34 PID 2908 wrote to memory of 1676 2908 Sys322.exe 34 PID 2136 wrote to memory of 2968 2136 taskeng.exe 37 PID 2136 wrote to memory of 2968 2136 taskeng.exe 37 PID 2136 wrote to memory of 2968 2136 taskeng.exe 37 PID 2136 wrote to memory of 2968 2136 taskeng.exe 37
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:832 -
C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:2764
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C:\Program Files (x86)\Win64\gcc.exe"C:\Program Files (x86)\Win64\gcc.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2716 -
C:\Users\Admin\AppData\Roaming\Sys322.exe"C:\Users\Admin\AppData\Roaming\Sys322.exe" /launchSelfAndExit "C:\Program Files (x86)\Win64\gcc.exe" 2716 /protectFile3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2908 -
C:\Users\Admin\AppData\Roaming\Sys322.exe"C:\Users\Admin\AppData\Roaming\Sys322.exe" /watchProcess "C:\Program Files (x86)\Win64\gcc.exe" 2716 "/protectFile"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1676
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:2732
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C:\Windows\system32\taskeng.exetaskeng.exe {48001424-9CC3-41F5-8AB7-0E948F7EC722} S-1-5-21-1268429524-3929314613-1992311491-1000:XBTLDBHN\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2136 -
C:\Program Files (x86)\Win64\gcc.exe"C:\Program Files (x86)\Win64\gcc.exe"2⤵
- Executes dropped EXE
PID:1996
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C:\Program Files (x86)\Win64\gcc.exe"C:\Program Files (x86)\Win64\gcc.exe"2⤵
- Executes dropped EXE
PID:2968
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
357B
MD5a2b76cea3a59fa9af5ea21ff68139c98
SHA135d76475e6a54c168f536e30206578babff58274
SHA256f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad
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Filesize
914KB
MD5c6d06917e01beb93e4bad79537df2eb7
SHA1927d7c8e85f740e35161a5de831771160d81cb95
SHA256c4288fddf7805d6ecfe23adb3f4b687f69d6848d790d4abc672324581a1d0a73
SHA512082ba84dd4d1c1e7ba34077f5d3cacfdf02c2b904d7cdb73ed59269b734c802e817e18ece928c021a0e05c54b497da168dcd1a830148032dff3b19c354bab0cb
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Filesize
9KB
MD5913967b216326e36a08010fb70f9dba3
SHA17b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf
SHA2568d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a
SHA512c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33
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Filesize
21KB
MD5e6fcf516d8ed8d0d4427f86e08d0d435
SHA1c7691731583ab7890086635cb7f3e4c22ca5e409
SHA2568dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e