Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2024 14:02

General

  • Target

    cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe

  • Size

    896KB

  • MD5

    b464444a180c10a26843bc549cd87601

  • SHA1

    545b633847b6148c0016f58fc2d9a949778b0433

  • SHA256

    cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048

  • SHA512

    b2f849290ce0948f3f43336818c9448b6538ef14dbeae122943d91a159acb8cf81976bb84f9c7f313c64943cdc7b02f9d3b804866c5befdc0cf260e01595a1f0

  • SSDEEP

    24576:mn9Cgx+s7vOBnRtyy3/DaIiZD7kFOoLGV0EFemOoZ0IZ:UwgvezycbtI4OH0EFePo2IZ

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

eadzagba1.duckdns.org:4877

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-8XMYGH

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe
    "C:\Users\Admin\AppData\Local\Temp\cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3016
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2880
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rJxVpYQDxuAdz.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2952
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rJxVpYQDxuAdz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp32D3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2812
    • C:\Users\Admin\AppData\Local\Temp\cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe
      "C:\Users\Admin\AppData\Local\Temp\cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2448
      • 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:1524
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:820
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rJxVpYQDxuAdz.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3008
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rJxVpYQDxuAdz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDEAC.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:264
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:2800
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          PID:1372
        • 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
          PID:1592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    896KB

    MD5

    b464444a180c10a26843bc549cd87601

    SHA1

    545b633847b6148c0016f58fc2d9a949778b0433

    SHA256

    cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048

    SHA512

    b2f849290ce0948f3f43336818c9448b6538ef14dbeae122943d91a159acb8cf81976bb84f9c7f313c64943cdc7b02f9d3b804866c5befdc0cf260e01595a1f0

  • C:\Users\Admin\AppData\Local\Temp\tmp32D3.tmp

    Filesize

    1KB

    MD5

    cf23546e8546927b763dd80f0622af50

    SHA1

    92e030b9e51d5be838145da24b11f2a0435afab6

    SHA256

    f2ffc55432628655873fa49966f6240af7749e9224bfd2970796124fcdfd21b2

    SHA512

    1eada1eb6e38a25e4e777d6aa335823e7454e72624b11097fd027d4b70cf20429f55283b5d2970ad48a0727641445824f7fd4f0b87e7d6f248e9320a1db8065b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\I3OQ3IW27C9VU1VBP1JV.temp

    Filesize

    7KB

    MD5

    9d57783801ea72b49e70f84eaff18f3b

    SHA1

    4617388b3871c7cad9e83729850450b3d9ea5041

    SHA256

    d9f3dfab29a5ab4c35d434ebe68eed0458b8187d81eb87f3038822a04538fc36

    SHA512

    285e523cc3b48ae6522ae7d38d7919e1d7d64f3d230729d9a4cc49c22d15db0fbd156b374c32f23272447ef5091ecdc58793d39ea27c38296ec427f205b41719

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    a75a23696cde75d5e4eeca919a3fda75

    SHA1

    c3d16c00f94382746e8dafa810e6a7b2a2306006

    SHA256

    a11fc85ccbeba3736a4e9ba442cfe484d1d8021fbf22c72dae9f6eb6c8abde23

    SHA512

    00416f85b4f42bd13383d3ad797037e03ed1a6d32b11476bec95a1dc1271d2bbd9f51baeb0e6f518a65647763ed75e21359a43cd376628f07291f14087afac6f

  • memory/1524-48-0x00000000001F0000-0x00000000002D6000-memory.dmp

    Filesize

    920KB

  • memory/1592-97-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-98-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-109-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-107-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-106-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-105-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-103-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-93-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-92-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-80-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1592-108-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-104-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-90-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-88-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-89-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1592-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2448-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3016-1-0x0000000000B30000-0x0000000000C16000-memory.dmp

    Filesize

    920KB

  • memory/3016-6-0x0000000005200000-0x00000000052C0000-memory.dmp

    Filesize

    768KB

  • memory/3016-2-0x0000000074690000-0x0000000074D7E000-memory.dmp

    Filesize

    6.9MB

  • memory/3016-3-0x000000007469E000-0x000000007469F000-memory.dmp

    Filesize

    4KB

  • memory/3016-49-0x0000000074690000-0x0000000074D7E000-memory.dmp

    Filesize

    6.9MB

  • memory/3016-0-0x000000007469E000-0x000000007469F000-memory.dmp

    Filesize

    4KB

  • memory/3016-4-0x0000000074690000-0x0000000074D7E000-memory.dmp

    Filesize

    6.9MB

  • memory/3016-5-0x00000000003A0000-0x00000000003B2000-memory.dmp

    Filesize

    72KB