Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
13-12-2024 10:28
Behavioral task
behavioral1
Sample
RMX.exe
Resource
win7-20240729-en
General
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Target
RMX.exe
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Size
469KB
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MD5
87d7fffd5ec9e7bc817d31ce77dee415
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SHA1
6cc44ccc0438c65cdef248cc6d76fc0d05e79222
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SHA256
47ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628
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SHA512
1d2c6ec8676cb1cfbe37f808440287ea6a658d3f21829b5001c3c08a663722eb0537cc681a6faa7d39dc16a101fa2bbf55989a64a7c16143f11aa96033b886a5
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SSDEEP
12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSAn9:uiLJbpI7I2WhQqZ7A9
Malware Config
Extracted
remcos
RMX
154.216.18.132:6868
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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
true
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hide_keylog_file
false
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install_flag
true
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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-8G0TND
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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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startup_value
Remcos
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Remcos family
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe -
Adds policy Run key to start application 2 TTPs 6 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run RMX.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" RMX.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run remcos.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run iexplore.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" iexplore.exe -
Executes dropped EXE 1 IoCs
pid Process 2720 remcos.exe -
Loads dropped DLL 2 IoCs
pid Process 2900 cmd.exe 2900 cmd.exe -
Adds Run key to start application 2 TTPs 6 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" RMX.exe Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" iexplore.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" RMX.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2720 set thread context of 3020 2720 remcos.exe 39 PID 3020 set thread context of 2568 3020 iexplore.exe 44 -
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 11 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RMX.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WScript.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 iexplore.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe -
Modifies registry key 1 TTPs 3 IoCs
pid Process 2820 reg.exe 1772 reg.exe 2676 reg.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2720 remcos.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 2720 remcos.exe 3020 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3020 iexplore.exe -
Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 2668 wrote to memory of 2756 2668 RMX.exe 31 PID 2668 wrote to memory of 2756 2668 RMX.exe 31 PID 2668 wrote to memory of 2756 2668 RMX.exe 31 PID 2668 wrote to memory of 2756 2668 RMX.exe 31 PID 2756 wrote to memory of 2676 2756 cmd.exe 33 PID 2756 wrote to memory of 2676 2756 cmd.exe 33 PID 2756 wrote to memory of 2676 2756 cmd.exe 33 PID 2756 wrote to memory of 2676 2756 cmd.exe 33 PID 2668 wrote to memory of 2744 2668 RMX.exe 34 PID 2668 wrote to memory of 2744 2668 RMX.exe 34 PID 2668 wrote to memory of 2744 2668 RMX.exe 34 PID 2668 wrote to memory of 2744 2668 RMX.exe 34 PID 2744 wrote to memory of 2900 2744 WScript.exe 35 PID 2744 wrote to memory of 2900 2744 WScript.exe 35 PID 2744 wrote to memory of 2900 2744 WScript.exe 35 PID 2744 wrote to memory of 2900 2744 WScript.exe 35 PID 2900 wrote to memory of 2720 2900 cmd.exe 37 PID 2900 wrote to memory of 2720 2900 cmd.exe 37 PID 2900 wrote to memory of 2720 2900 cmd.exe 37 PID 2900 wrote to memory of 2720 2900 cmd.exe 37 PID 2720 wrote to memory of 2552 2720 remcos.exe 38 PID 2720 wrote to memory of 2552 2720 remcos.exe 38 PID 2720 wrote to memory of 2552 2720 remcos.exe 38 PID 2720 wrote to memory of 2552 2720 remcos.exe 38 PID 2720 wrote to memory of 3020 2720 remcos.exe 39 PID 2720 wrote to memory of 3020 2720 remcos.exe 39 PID 2720 wrote to memory of 3020 2720 remcos.exe 39 PID 2720 wrote to memory of 3020 2720 remcos.exe 39 PID 2720 wrote to memory of 3020 2720 remcos.exe 39 PID 3020 wrote to memory of 2580 3020 iexplore.exe 41 PID 3020 wrote to memory of 2580 3020 iexplore.exe 41 PID 3020 wrote to memory of 2580 3020 iexplore.exe 41 PID 3020 wrote to memory of 2580 3020 iexplore.exe 41 PID 2552 wrote to memory of 2820 2552 cmd.exe 42 PID 2552 wrote to memory of 2820 2552 cmd.exe 42 PID 2552 wrote to memory of 2820 2552 cmd.exe 42 PID 2552 wrote to memory of 2820 2552 cmd.exe 42 PID 3020 wrote to memory of 2568 3020 iexplore.exe 44 PID 3020 wrote to memory of 2568 3020 iexplore.exe 44 PID 3020 wrote to memory of 2568 3020 iexplore.exe 44 PID 3020 wrote to memory of 2568 3020 iexplore.exe 44 PID 3020 wrote to memory of 2568 3020 iexplore.exe 44 PID 2580 wrote to memory of 1772 2580 cmd.exe 45 PID 2580 wrote to memory of 1772 2580 cmd.exe 45 PID 2580 wrote to memory of 1772 2580 cmd.exe 45 PID 2580 wrote to memory of 1772 2580 cmd.exe 45
Processes
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C:\Users\Admin\AppData\Local\Temp\RMX.exe"C:\Users\Admin\AppData\Local\Temp\RMX.exe"1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f3⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:2676
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2744 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Remcos\remcos.exe"3⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2900 -
C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe4⤵
- Adds policy Run key to start application
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2720 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f6⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:2820
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\??\c:\program files (x86)\internet explorer\iexplore.exe"c:\program files (x86)\internet explorer\iexplore.exe"5⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f6⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f7⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:1772
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C:\Windows\SysWOW64\svchost.exesvchost.exe6⤵PID:2568
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
4Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD50df856554ea6d49a35e2e7884404646a
SHA1c3968fc690244fe93c48baae291be17040b5c8cc
SHA256beec8a7d914a62b884d4cfbc2fb75007aa310078c9b202d6b00967c9a4aa837d
SHA51247e21c91e86e8320404248221624e62f0ee97dbde9d17b64b2fe92ad664cb69b063042fc66b4380c2fb4f853e898be14ed9f682c5b0792d0bed5824962e2679d
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Filesize
469KB
MD587d7fffd5ec9e7bc817d31ce77dee415
SHA16cc44ccc0438c65cdef248cc6d76fc0d05e79222
SHA25647ae8e5d41bbd1eb506a303584b124c3c8a1caeac4564252fa78856190f0f628
SHA5121d2c6ec8676cb1cfbe37f808440287ea6a658d3f21829b5001c3c08a663722eb0537cc681a6faa7d39dc16a101fa2bbf55989a64a7c16143f11aa96033b886a5
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Filesize
386B
MD51ec6289c6fd4c2ded6b2836ed28cbeb5
SHA1c4e08195e6c640eb8860acc03fda1d649b4fe070
SHA2566efdc40f9eb217f879607614e928b65bff759e424f3efb31faceb2a043c32dc2
SHA51220bc46f4dee22f75f15c402c7c2eaee60fff7dd92548050585571dcbefd59485cc249c06bc3f1aac7a138e5ae67c0c3918b46ffa24c8b0f1b092e2f6b6e21288