Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
27-11-2024 11:36
Static task
static1
Behavioral task
behavioral1
Sample
RFQ-00948-STELLION-878378.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
RFQ-00948-STELLION-878378.exe
Resource
win10v2004-20241007-en
General
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Target
RFQ-00948-STELLION-878378.exe
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Size
1.1MB
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MD5
7d78937ebc3648958437741df13eec52
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SHA1
9b30169d5adb06c082d6b9e297368faad45725f5
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SHA256
ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a
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SHA512
7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4
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SSDEEP
24576:PYoOciJwQYaoRuivChV3DSwctuoqBMY9zVZEueHTf:PsbwQIRssqBMWVZEu
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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Detected Nirsoft tools 3 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
Processes:
resource yara_rule behavioral1/memory/848-99-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral1/memory/956-92-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft behavioral1/memory/1872-100-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft -
NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral1/memory/1872-100-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 1 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral1/memory/956-92-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView -
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 584 powershell.exe 2844 powershell.exe -
Executes dropped EXE 6 IoCs
Processes:
remcos.exeremcos.exeremcos.exeremcos.exeremcos.exeremcos.exepid Process 2668 remcos.exe 2360 remcos.exe 956 remcos.exe 1872 remcos.exe 2072 remcos.exe 848 remcos.exe -
Loads dropped DLL 1 IoCs
Processes:
RFQ-00948-STELLION-878378.exepid Process 2744 RFQ-00948-STELLION-878378.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
remcos.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts remcos.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
remcos.exeRFQ-00948-STELLION-878378.exedescription ioc Process 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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" RFQ-00948-STELLION-878378.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" RFQ-00948-STELLION-878378.exe Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NJK093 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe -
Suspicious use of SetThreadContext 5 IoCs
Processes:
RFQ-00948-STELLION-878378.exeremcos.exeremcos.exedescription pid Process procid_target PID 340 set thread context of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 2668 set thread context of 2360 2668 remcos.exe 41 PID 2360 set thread context of 956 2360 remcos.exe 43 PID 2360 set thread context of 1872 2360 remcos.exe 44 PID 2360 set thread context of 848 2360 remcos.exe 46 -
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.
Processes:
powershell.exeremcos.exeremcos.exeremcos.exeRFQ-00948-STELLION-878378.exeremcos.exeRFQ-00948-STELLION-878378.exeschtasks.exeremcos.exepowershell.exeschtasks.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RFQ-00948-STELLION-878378.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RFQ-00948-STELLION-878378.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 powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.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 2960 schtasks.exe 2440 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
Processes:
RFQ-00948-STELLION-878378.exepowershell.exeremcos.exepowershell.exeremcos.exepid Process 340 RFQ-00948-STELLION-878378.exe 340 RFQ-00948-STELLION-878378.exe 340 RFQ-00948-STELLION-878378.exe 340 RFQ-00948-STELLION-878378.exe 584 powershell.exe 2668 remcos.exe 2668 remcos.exe 2668 remcos.exe 2844 powershell.exe 2668 remcos.exe 956 remcos.exe 956 remcos.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
remcos.exepid Process 2360 remcos.exe -
Suspicious behavior: MapViewOfSection 4 IoCs
Processes:
remcos.exepid Process 2360 remcos.exe 2360 remcos.exe 2360 remcos.exe 2360 remcos.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
RFQ-00948-STELLION-878378.exepowershell.exeremcos.exepowershell.exeremcos.exedescription pid Process Token: SeDebugPrivilege 340 RFQ-00948-STELLION-878378.exe Token: SeDebugPrivilege 584 powershell.exe Token: SeDebugPrivilege 2668 remcos.exe Token: SeDebugPrivilege 2844 powershell.exe Token: SeDebugPrivilege 848 remcos.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
remcos.exepid Process 2360 remcos.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
RFQ-00948-STELLION-878378.exeRFQ-00948-STELLION-878378.exeremcos.exeremcos.exedescription pid Process procid_target PID 340 wrote to memory of 584 340 RFQ-00948-STELLION-878378.exe 31 PID 340 wrote to memory of 584 340 RFQ-00948-STELLION-878378.exe 31 PID 340 wrote to memory of 584 340 RFQ-00948-STELLION-878378.exe 31 PID 340 wrote to memory of 584 340 RFQ-00948-STELLION-878378.exe 31 PID 340 wrote to memory of 2440 340 RFQ-00948-STELLION-878378.exe 33 PID 340 wrote to memory of 2440 340 RFQ-00948-STELLION-878378.exe 33 PID 340 wrote to memory of 2440 340 RFQ-00948-STELLION-878378.exe 33 PID 340 wrote to memory of 2440 340 RFQ-00948-STELLION-878378.exe 33 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 340 wrote to memory of 2744 340 RFQ-00948-STELLION-878378.exe 35 PID 2744 wrote to memory of 2668 2744 RFQ-00948-STELLION-878378.exe 36 PID 2744 wrote to memory of 2668 2744 RFQ-00948-STELLION-878378.exe 36 PID 2744 wrote to memory of 2668 2744 RFQ-00948-STELLION-878378.exe 36 PID 2744 wrote to memory of 2668 2744 RFQ-00948-STELLION-878378.exe 36 PID 2668 wrote to memory of 2844 2668 remcos.exe 37 PID 2668 wrote to memory of 2844 2668 remcos.exe 37 PID 2668 wrote to memory of 2844 2668 remcos.exe 37 PID 2668 wrote to memory of 2844 2668 remcos.exe 37 PID 2668 wrote to memory of 2960 2668 remcos.exe 39 PID 2668 wrote to memory of 2960 2668 remcos.exe 39 PID 2668 wrote to memory of 2960 2668 remcos.exe 39 PID 2668 wrote to memory of 2960 2668 remcos.exe 39 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2668 wrote to memory of 2360 2668 remcos.exe 41 PID 2360 wrote to memory of 956 2360 remcos.exe 43 PID 2360 wrote to memory of 956 2360 remcos.exe 43 PID 2360 wrote to memory of 956 2360 remcos.exe 43 PID 2360 wrote to memory of 956 2360 remcos.exe 43 PID 2360 wrote to memory of 956 2360 remcos.exe 43 PID 2360 wrote to memory of 1872 2360 remcos.exe 44 PID 2360 wrote to memory of 1872 2360 remcos.exe 44 PID 2360 wrote to memory of 1872 2360 remcos.exe 44 PID 2360 wrote to memory of 1872 2360 remcos.exe 44 PID 2360 wrote to memory of 1872 2360 remcos.exe 44 PID 2360 wrote to memory of 2072 2360 remcos.exe 45 PID 2360 wrote to memory of 2072 2360 remcos.exe 45 PID 2360 wrote to memory of 2072 2360 remcos.exe 45 PID 2360 wrote to memory of 2072 2360 remcos.exe 45 PID 2360 wrote to memory of 848 2360 remcos.exe 46 PID 2360 wrote to memory of 848 2360 remcos.exe 46 PID 2360 wrote to memory of 848 2360 remcos.exe 46 PID 2360 wrote to memory of 848 2360 remcos.exe 46
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:340 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:584
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp82B.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2440
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C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"2⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2744 -
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"3⤵
- 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:2668 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2844
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5783.tmp"4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2960
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C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- 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:2360 -
C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\yvubuxnsbxmwrbfoexirblqmmfwmra"5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:956
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\iphuuqyupfejuhbaohvsmqldumovslzkbg"5⤵
- Executes dropped EXE
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
PID:1872
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\srnnvi"5⤵
- Executes dropped EXE
PID:2072
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\srnnvi"5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:848
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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
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD5d9136d8930999d8654b1454b913fc555
SHA1a3d29dc3a75901e35dbf0f0d720ab11c1a5e8c96
SHA256e89688755cfec3daaee66fe869976802a3ef761f67707daea762bd04f408b70f
SHA5127b3a878718db12638b2924aa1a8b0847cd76dcd58a373453a92de95d60f80e844e526f0af98d982135c1ea408c62240500e81aefebaa8b1f58deab16e671bbec
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Filesize
1KB
MD5dd15b48abd3ebe9352b4d448e3f24994
SHA1bcb8d86b0dd649e7d6024f6fb76bcdc238ceb731
SHA2560b29bc6496a2e96ddcb75b55bd9526f0519f744cfbb55eaa6340c3f2a72b569a
SHA5127d27d40296ad3b6dd0c96d3d9eff2b0d608d42cd65fa8c08b4cf5bfd5ca14776108a571d0e1774020089756c94fedc826f48153d5f5d6566ff9ba85964c21504
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Filesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD56ae2f04616baaae12dca04548c560438
SHA1ec2534b24d334a8669d3fd0e86061e95a9369bc4
SHA2568976cb3ceb8693b480369be82251832509787d479c746f8f3fb7485e6d794e66
SHA5126c45c2828a7c2b8a55abf7fd9407d39e6397e257485af14d4e69b69a38cf2fe590a3dc59a041b468eb88e0b762506de260e437b636d6a4c9bd655752df20f3c6
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Filesize
1.1MB
MD57d78937ebc3648958437741df13eec52
SHA19b30169d5adb06c082d6b9e297368faad45725f5
SHA256ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a
SHA5127e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4