Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22-11-2024 03:04
Static task
static1
Behavioral task
behavioral1
Sample
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe
Resource
win10v2004-20241007-en
General
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Target
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe
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Size
908KB
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MD5
1cb86400147c835af58017f0474c5bcc
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SHA1
ac285cb623bf292341068dead954cfed9a1f8c81
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SHA256
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61
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SHA512
ce74f39d092b13570f9387e5d43ced748dea9557e8887fc072694a2cf448b2c4cf741db3e76d551ebef3511b906ae1cbe0fe670f8968e51d1441982ec73b9b0c
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SSDEEP
24576:Nqho7Y33wd4D5N4UmVFruPkMKXbY31qKblvh:y1Hwd4FN4UoFqjKXboTp5
Malware Config
Extracted
remcos
RemoteHost
206.189.218.238:4782
206.189.218.238:2286
206.189.218.238:3363
206.189.218.238:3386
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audio_folder
MicRecords
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audio_path
ApplicationPath
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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
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-NJK093
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screenshot_crypt
false
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screenshot_flag
true
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
1
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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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Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepid process 2860 powershell.exe 1244 powershell.exe -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exec35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exeremcos.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation remcos.exe -
Executes dropped EXE 2 IoCs
Processes:
remcos.exeremcos.exepid process 2088 remcos.exe 1620 remcos.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exeremcos.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exeremcos.exedescription pid process target process PID 3612 set thread context of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 2088 set thread context of 1620 2088 remcos.exe remcos.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 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exepowershell.exeschtasks.exec35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exeremcos.exepowershell.exeschtasks.exeremcos.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 2780 schtasks.exe 2288 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exepowershell.exeremcos.exepowershell.exepid process 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe 2860 powershell.exe 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe 2860 powershell.exe 2088 remcos.exe 2088 remcos.exe 1244 powershell.exe 2088 remcos.exe 1244 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exepowershell.exeremcos.exepowershell.exedescription pid process Token: SeDebugPrivilege 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe Token: SeDebugPrivilege 2860 powershell.exe Token: SeDebugPrivilege 2088 remcos.exe Token: SeDebugPrivilege 1244 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
remcos.exepid process 1620 remcos.exe -
Suspicious use of WriteProcessMemory 39 IoCs
Processes:
c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exec35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exeremcos.exedescription pid process target process PID 3612 wrote to memory of 2860 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe powershell.exe PID 3612 wrote to memory of 2860 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe powershell.exe PID 3612 wrote to memory of 2860 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe powershell.exe PID 3612 wrote to memory of 2780 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe schtasks.exe PID 3612 wrote to memory of 2780 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe schtasks.exe PID 3612 wrote to memory of 2780 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe schtasks.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3612 wrote to memory of 3352 3612 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe PID 3352 wrote to memory of 2088 3352 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe remcos.exe PID 3352 wrote to memory of 2088 3352 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe remcos.exe PID 3352 wrote to memory of 2088 3352 c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe remcos.exe PID 2088 wrote to memory of 1244 2088 remcos.exe powershell.exe PID 2088 wrote to memory of 1244 2088 remcos.exe powershell.exe PID 2088 wrote to memory of 1244 2088 remcos.exe powershell.exe PID 2088 wrote to memory of 2288 2088 remcos.exe schtasks.exe PID 2088 wrote to memory of 2288 2088 remcos.exe schtasks.exe PID 2088 wrote to memory of 2288 2088 remcos.exe schtasks.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe PID 2088 wrote to memory of 1620 2088 remcos.exe remcos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe"C:\Users\Admin\AppData\Local\Temp\c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3612 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mWrixkEbVc.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2860
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mWrixkEbVc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF608.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2780
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C:\Users\Admin\AppData\Local\Temp\c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe"C:\Users\Admin\AppData\Local\Temp\c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3352 -
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mWrixkEbVc.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1244
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mWrixkEbVc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp64B0.tmp"4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2288
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C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1620
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD5d99c0044c530aae43ad8d1a5c93e98f2
SHA13c0522a577fbb54665b27cd42b43ad88e267f013
SHA256da622c4d3e3059e05ccca93507ecf0d0d83a3ab8fbff77a7934ef4afd0ad72c5
SHA512473ce5baca85547671ed5e4b5a062e8ffa02d6d7f32c82efe1a384b5d8cb8bbaf215228556d3f4736d0d2efed1fb258fc3141483788ddaa9f4293cd1ea58bf80
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Filesize
908KB
MD51cb86400147c835af58017f0474c5bcc
SHA1ac285cb623bf292341068dead954cfed9a1f8c81
SHA256c35b10fc350209ec356b48282d85b18d9b9ab5c0167dc88461297906602e3d61
SHA512ce74f39d092b13570f9387e5d43ced748dea9557e8887fc072694a2cf448b2c4cf741db3e76d551ebef3511b906ae1cbe0fe670f8968e51d1441982ec73b9b0c
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD59ff067802f87292d2c511d6dc6c018c5
SHA101ccec0a04c8958c2a3ad539397fd16c89415a60
SHA256ad5e23423e482907b2361b0f73120e92977ff7320e0c14b4120bf429f0a552e7
SHA51210af18788af865346deaa66ce90f58edcbd392498c140c104516d14e70bfcd5d6f4a87b7bf46f9381a05e786a99f36290293abdc0bafebd6826918d121d74b43
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5fe92aeb8e4ae345b48ea935a7e84cfa6
SHA12c8dfcdb21897688a25343c0b45d3b28d886ed55
SHA256ed26f555f389f0279e13dddd7bf693be6930bbb1de0358c0f26096c6d2ac1b94
SHA512544b613dacdda2658714ec520c62c37bb73d16c2846448ced0374ff9d89c08df6fd33e602091ae4d4c6dd8296d2afe3dca0dd2f1a8875da1d5058a6aa231dac0