Analysis
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max time kernel
81s -
max time network
79s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
12-08-2024 05:54
Behavioral task
behavioral1
Sample
remcos_a.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
remcos_a.exe
Resource
win10v2004-20240802-en
General
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Target
remcos_a.exe
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Size
483KB
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MD5
5b2027af10b3d0fb8fc1a5aca4fe2884
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SHA1
cd342301a2db8ba6bb540a7c3d1ab8491974991c
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SHA256
1aa8e0e39ef44f0906f9f8036df2eff25f53c985a22b24c4f8ac994c3cd5e6d2
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SHA512
1beb46efcad6bbacfd9daf3359609f502aecd8a546477d50b0de38ac161fcad7bcb1540fd6375a2adcbe0fdd21ca291a140847ed01f83942730996b8fc816413
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SSDEEP
6144:QTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrLT4:QTlrYw1RUh3NFn+N5WfIQIjbs/ZBIT4
Malware Config
Extracted
remcos
RemoteHost
192.168.1.252:2404
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-K3NAY7
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Suspicious use of SetThreadContext 2 IoCs
Processes:
remcos_a.exeiexplore.exedescription pid Process procid_target PID 2292 set thread context of 2012 2292 remcos_a.exe 31 PID 2012 set thread context of 3056 2012 iexplore.exe 32 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
iexplore.exeremcos_a.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language iexplore.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos_a.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
vlc.exepid Process 2664 vlc.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
remcos_a.exepid Process 2292 remcos_a.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
Processes:
vlc.exeiexplore.exepid Process 2664 vlc.exe 2012 iexplore.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
remcos_a.exeiexplore.exepid Process 2292 remcos_a.exe 2012 iexplore.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
vlc.exepid Process 2664 vlc.exe 2664 vlc.exe 2664 vlc.exe 2664 vlc.exe -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
vlc.exepid Process 2664 vlc.exe 2664 vlc.exe 2664 vlc.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
iexplore.exevlc.exepid Process 2012 iexplore.exe 2664 vlc.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
remcos_a.exeiexplore.exedescription pid Process procid_target PID 2292 wrote to memory of 2012 2292 remcos_a.exe 31 PID 2292 wrote to memory of 2012 2292 remcos_a.exe 31 PID 2292 wrote to memory of 2012 2292 remcos_a.exe 31 PID 2292 wrote to memory of 2012 2292 remcos_a.exe 31 PID 2292 wrote to memory of 2012 2292 remcos_a.exe 31 PID 2012 wrote to memory of 3056 2012 iexplore.exe 32 PID 2012 wrote to memory of 3056 2012 iexplore.exe 32 PID 2012 wrote to memory of 3056 2012 iexplore.exe 32 PID 2012 wrote to memory of 3056 2012 iexplore.exe 32 PID 2012 wrote to memory of 3056 2012 iexplore.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\remcos_a.exe"C:\Users\Admin\AppData\Local\Temp\remcos_a.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2292 -
\??\c:\program files (x86)\internet explorer\iexplore.exe"c:\program files (x86)\internet explorer\iexplore.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Windows\SysWOW64\svchost.exesvchost.exe3⤵PID:3056
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C:\Program Files\VideoLAN\VLC\vlc.exe"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\SplitTest.M2T"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2664
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
308B
MD57e6c1d8d37a2fa0d97dcee7b70a1ee64
SHA1ea43a941f27158e6aa7f32993eb86b48cdefb822
SHA2568e0f7dd40b6dadb8405109dff0c45269958c748b046e777388b265d94306ce60
SHA51240672b779329044f6a4c02abbbeec9bde1d0819edf2228dbf02704567a30ff609f8d0cc5de8a20b4b02569e6f88b5bb432f163aa738f5992708233f43ba479bc