Analysis
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max time kernel
150s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
04-11-2024 16:54
Behavioral task
behavioral1
Sample
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe
Resource
win7-20240903-en
General
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Target
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe
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Size
5.4MB
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MD5
616fd2b3429b816fc7ebc62d103cc995
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SHA1
5a202f24dda9c7b9407b1bc41c27a84c29ea964f
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SHA256
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6
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SHA512
a0c1a065d6d6b18127c92597baccbcd4fd2136eee4462182899a928c163a2adad065ceabd6a12bf369a8e5ceafb318c29782100ebfc3e63e014602b7253d1bc2
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SSDEEP
98304:9uv8pxJvkLXr8+VOOrjL6eRhzvBG40st9Rl0E4dV0Q89XbrnH:9dY4+QOrjpRhzBL0K9H05dCQwH
Malware Config
Signatures
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Darkcomet family
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Runtime Broker.exe" f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 2564 attrib.exe 2600 attrib.exe -
Executes dropped EXE 1 IoCs
Processes:
Runtime Broker.exepid process 2612 Runtime Broker.exe -
Loads dropped DLL 2 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exepid process 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe -
Processes:
resource yara_rule behavioral1/memory/2808-1-0x0000000000400000-0x0000000000D3E000-memory.dmp vmprotect behavioral1/memory/2808-42-0x0000000000400000-0x0000000000D3E000-memory.dmp vmprotect behavioral1/memory/2808-44-0x0000000000400000-0x0000000000D3E000-memory.dmp vmprotect behavioral1/memory/2808-46-0x0000000000400000-0x0000000000D3E000-memory.dmp vmprotect \Windows\SysWOW64\Runtime Broker.exe vmprotect behavioral1/memory/2808-139-0x0000000000400000-0x0000000000D3E000-memory.dmp vmprotect -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exeRuntime Broker.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe" f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\RUNTIMEBROKHANDLER = "C:\\Windows\\system32\\Runtime Broker.exe" Runtime Broker.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
Processes:
flow ioc 53 7.tcp.eu.ngrok.io 81 7.tcp.eu.ngrok.io 2 7.tcp.eu.ngrok.io 9 7.tcp.eu.ngrok.io -
Drops file in System32 directory 3 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exedescription ioc process File created C:\Windows\SysWOW64\Runtime Broker.exe f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe File opened for modification C:\Windows\SysWOW64\Runtime Broker.exe f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe File opened for modification C:\Windows\SysWOW64\ f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exeRuntime Broker.exepid process 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe 2612 Runtime Broker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
Runtime Broker.exenotepad.exef461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.execmd.execmd.exeattrib.exeattrib.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Runtime Broker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exeRuntime Broker.exepid process 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe 2612 Runtime Broker.exe 2612 Runtime Broker.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Runtime Broker.exepid process 2612 Runtime Broker.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exeRuntime Broker.exedescription pid process Token: SeIncreaseQuotaPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeSecurityPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeTakeOwnershipPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeLoadDriverPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeSystemProfilePrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeSystemtimePrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeProfSingleProcessPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeIncBasePriorityPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeCreatePagefilePrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeBackupPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeRestorePrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeShutdownPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeDebugPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeSystemEnvironmentPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeChangeNotifyPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeRemoteShutdownPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeUndockPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeManageVolumePrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeImpersonatePrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeCreateGlobalPrivilege 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: 33 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: 34 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: 35 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Token: SeIncreaseQuotaPrivilege 2612 Runtime Broker.exe Token: SeSecurityPrivilege 2612 Runtime Broker.exe Token: SeTakeOwnershipPrivilege 2612 Runtime Broker.exe Token: SeLoadDriverPrivilege 2612 Runtime Broker.exe Token: SeSystemProfilePrivilege 2612 Runtime Broker.exe Token: SeSystemtimePrivilege 2612 Runtime Broker.exe Token: SeProfSingleProcessPrivilege 2612 Runtime Broker.exe Token: SeIncBasePriorityPrivilege 2612 Runtime Broker.exe Token: SeCreatePagefilePrivilege 2612 Runtime Broker.exe Token: SeBackupPrivilege 2612 Runtime Broker.exe Token: SeRestorePrivilege 2612 Runtime Broker.exe Token: SeShutdownPrivilege 2612 Runtime Broker.exe Token: SeDebugPrivilege 2612 Runtime Broker.exe Token: SeSystemEnvironmentPrivilege 2612 Runtime Broker.exe Token: SeChangeNotifyPrivilege 2612 Runtime Broker.exe Token: SeRemoteShutdownPrivilege 2612 Runtime Broker.exe Token: SeUndockPrivilege 2612 Runtime Broker.exe Token: SeManageVolumePrivilege 2612 Runtime Broker.exe Token: SeImpersonatePrivilege 2612 Runtime Broker.exe Token: SeCreateGlobalPrivilege 2612 Runtime Broker.exe Token: 33 2612 Runtime Broker.exe Token: 34 2612 Runtime Broker.exe Token: 35 2612 Runtime Broker.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Runtime Broker.exepid process 2612 Runtime Broker.exe -
Suspicious use of WriteProcessMemory 51 IoCs
Processes:
f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.execmd.execmd.exeRuntime Broker.exedescription pid process target process PID 2808 wrote to memory of 2580 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2808 wrote to memory of 2580 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2808 wrote to memory of 2580 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2808 wrote to memory of 2580 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2808 wrote to memory of 2588 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2808 wrote to memory of 2588 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2808 wrote to memory of 2588 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2808 wrote to memory of 2588 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe cmd.exe PID 2588 wrote to memory of 2564 2588 cmd.exe attrib.exe PID 2588 wrote to memory of 2564 2588 cmd.exe attrib.exe PID 2588 wrote to memory of 2564 2588 cmd.exe attrib.exe PID 2588 wrote to memory of 2564 2588 cmd.exe attrib.exe PID 2580 wrote to memory of 2600 2580 cmd.exe attrib.exe PID 2580 wrote to memory of 2600 2580 cmd.exe attrib.exe PID 2580 wrote to memory of 2600 2580 cmd.exe attrib.exe PID 2580 wrote to memory of 2600 2580 cmd.exe attrib.exe PID 2808 wrote to memory of 2612 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Runtime Broker.exe PID 2808 wrote to memory of 2612 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Runtime Broker.exe PID 2808 wrote to memory of 2612 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Runtime Broker.exe PID 2808 wrote to memory of 2612 2808 f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe Runtime Broker.exe PID 2612 wrote to memory of 2604 2612 Runtime Broker.exe iexplore.exe PID 2612 wrote to memory of 2604 2612 Runtime Broker.exe iexplore.exe PID 2612 wrote to memory of 2604 2612 Runtime Broker.exe iexplore.exe PID 2612 wrote to memory of 2604 2612 Runtime Broker.exe iexplore.exe PID 2612 wrote to memory of 748 2612 Runtime Broker.exe explorer.exe PID 2612 wrote to memory of 748 2612 Runtime Broker.exe explorer.exe PID 2612 wrote to memory of 748 2612 Runtime Broker.exe explorer.exe PID 2612 wrote to memory of 748 2612 Runtime Broker.exe explorer.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe PID 2612 wrote to memory of 2020 2612 Runtime Broker.exe notepad.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 2564 attrib.exe 2600 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe"C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe"1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2808 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe" +s +h2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe" +s +h3⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2600
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588 -
C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Sets file to hidden
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2564
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C:\Windows\SysWOW64\Runtime Broker.exe"C:\Windows\system32\Runtime Broker.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵PID:2604
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"3⤵PID:748
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
- System Location Discovery: System Language Discovery
PID:2020
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5.4MB
MD5616fd2b3429b816fc7ebc62d103cc995
SHA15a202f24dda9c7b9407b1bc41c27a84c29ea964f
SHA256f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6
SHA512a0c1a065d6d6b18127c92597baccbcd4fd2136eee4462182899a928c163a2adad065ceabd6a12bf369a8e5ceafb318c29782100ebfc3e63e014602b7253d1bc2