Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2024 03:38
Static task
static1
Behavioral task
behavioral1
Sample
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
Resource
win10v2004-20241007-en
General
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Target
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
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Size
908KB
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MD5
0a91b0a960e1cb925434f0ded97e30b7
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SHA1
ea0ed432c0cdb5f86cde1b17850a77b68ad71af4
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SHA256
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b
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SHA512
37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4
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SSDEEP
24576:Mo7x/alQteiW/C+sHTTPrCehcxQv4Zj6CSy:Mc/zhWK+vC4ZIy
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 4752 powershell.exe 3088 powershell.exe -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exef57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exeremcos.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.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 4176 remcos.exe 1976 remcos.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exeremcos.exedescription ioc process 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\"" f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.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 -
Suspicious use of SetThreadContext 2 IoCs
Processes:
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exeremcos.exedescription pid process target process PID 3812 set thread context of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 4176 set thread context of 1976 4176 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:
schtasks.exef57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exeremcos.exepowershell.exeschtasks.exeremcos.exef57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exepowershell.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.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 3912 schtasks.exe 1416 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exepowershell.exepid process 4752 powershell.exe 4752 powershell.exe 3088 powershell.exe 3088 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 4752 powershell.exe Token: SeDebugPrivilege 3088 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
remcos.exepid process 1976 remcos.exe -
Suspicious use of WriteProcessMemory 39 IoCs
Processes:
f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exef57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exeremcos.exedescription pid process target process PID 3812 wrote to memory of 4752 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe powershell.exe PID 3812 wrote to memory of 4752 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe powershell.exe PID 3812 wrote to memory of 4752 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe powershell.exe PID 3812 wrote to memory of 3912 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe schtasks.exe PID 3812 wrote to memory of 3912 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe schtasks.exe PID 3812 wrote to memory of 3912 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe schtasks.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 3812 wrote to memory of 4580 3812 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe PID 4580 wrote to memory of 4176 4580 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe remcos.exe PID 4580 wrote to memory of 4176 4580 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe remcos.exe PID 4580 wrote to memory of 4176 4580 f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe remcos.exe PID 4176 wrote to memory of 3088 4176 remcos.exe powershell.exe PID 4176 wrote to memory of 3088 4176 remcos.exe powershell.exe PID 4176 wrote to memory of 3088 4176 remcos.exe powershell.exe PID 4176 wrote to memory of 1416 4176 remcos.exe schtasks.exe PID 4176 wrote to memory of 1416 4176 remcos.exe schtasks.exe PID 4176 wrote to memory of 1416 4176 remcos.exe schtasks.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe PID 4176 wrote to memory of 1976 4176 remcos.exe remcos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3812 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4752
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF6F3.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3912
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C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4580 -
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 use of WriteProcessMemory
PID:4176 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3088
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp80B4.tmp"4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1416
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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:1976
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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
MD51972888cbc515fc7b9cfa6a8db46076b
SHA1dd0f00b4f4b8180795e8fb70545c2bcfc20ed141
SHA2567531deab37d761de4f2d3a41b5fea22a1e0317fed7b15fd86da7058b56086c2c
SHA5128949195a48d9ce35ae40da585ba9249cfdedb5e822518dd57cad2d5ba21da795b41fbbd52213756e65338a80a9c9f2a345803233dffb7850395c9306b314467c
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Filesize
908KB
MD50a91b0a960e1cb925434f0ded97e30b7
SHA1ea0ed432c0cdb5f86cde1b17850a77b68ad71af4
SHA256f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b
SHA51237d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4
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Filesize
2KB
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
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Filesize
18KB
MD52e75ab7e6a9db24f09c1c88eca63ce5d
SHA16ece147ec07fb95b991339d6b0da8abb498c98ba
SHA2567a2a294fdb813b478acbbe661d0d1e8c00be03aae0f2815ac1f4eb6a4cd9fd59
SHA512d18b15af51610f6998ce8dd1374459b87b3d67cd071e819cb0c80d700b680591caaf4b5c96eef9594db41833fedf0079d22f076f0dc09bb3fbfd637bf9ac4ea0
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5fa6f8cc1a6103101bcced056c8d1d040
SHA1c3dcbe7d5b36f9c4c8cba400a10e4005ff4b27a5
SHA256923fa2d976b2e64691334e49bf37be36321c87acc721a6cd388577419613a9df
SHA5129ecb0eb7de37c4c5014d6cafc2ce28c72c233f6173dd85c195b8874b791c86ad4d2300836080c382e67f4ad2fa1d4ee072d90f5f60c83bb37347b235dc97b7ef