Analysis

  • 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
    03-12-2024 16:37

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 3 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:2404
    • 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:2592
    • 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:2716
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rJxVpYQDxuAdz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4C3C.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2776
    • C:\Users\Admin\AppData\Local\Temp\cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe
      "C:\Users\Admin\AppData\Local\Temp\cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048.exe"
      2⤵
        PID:2860
      • 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:2520
        • 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:3064
          • 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:2832
          • 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:2820
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rJxVpYQDxuAdz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF834.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:3036
          • C:\ProgramData\Remcos\remcos.exe
            "C:\ProgramData\Remcos\remcos.exe"
            4⤵
            • Executes dropped EXE
            PID:2152
          • 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:2156

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Remcos\remcos.exe

      Filesize

      896KB

      MD5

      b464444a180c10a26843bc549cd87601

      SHA1

      545b633847b6148c0016f58fc2d9a949778b0433

      SHA256

      cbcd738e4acad1d80148a67af4dca082e19f2d411f14fd0aa41d1c9c98fe5048

      SHA512

      b2f849290ce0948f3f43336818c9448b6538ef14dbeae122943d91a159acb8cf81976bb84f9c7f313c64943cdc7b02f9d3b804866c5befdc0cf260e01595a1f0

    • C:\Users\Admin\AppData\Local\Temp\tmp4C3C.tmp

      Filesize

      1KB

      MD5

      04f3e4d03a06b2c6422b99b44292bc3d

      SHA1

      0552510ec789caff2bffbeaa0d1a2097d224d399

      SHA256

      3cbe9536b8fd4a7d6a34af650c6cd156af33193bfbe5ec999304470c54841406

      SHA512

      19913cb535929e784d52bcffbd1b41c9ea5aefbb886dce4deb15d813a8ceda824d54943e74a0a9616d26310fe59a73841c1baa86b2002b3d5b1d16681704cb4a

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\AHSH9E38U7FD19ZMZODZ.temp

      Filesize

      7KB

      MD5

      7641747285a7cc7b1635375dc3aca89c

      SHA1

      85c2c9709c505dc56ab30a9fc09ed77829289f06

      SHA256

      c1894c404ded9ff3ff70f5a042fdd032ca8215b86024004ec0199ca9b0e6a65b

      SHA512

      7f8c846d36d94f316a904677c2e002b2f0a901a5e12b789f8789fc0ff8d1fc779458221e08ab911d4d9c90c3ebceae3bd12aeb33315feb11f2fd64793456b147

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

      Filesize

      7KB

      MD5

      d731d58609998cedd38bc74490f100fd

      SHA1

      eab1bb15b563af7a66ef50beb36a5d1b94610e14

      SHA256

      bcd63deb0eead12c0d98a6fc37691550dd429b87cf1ff7e6051c3c836a9b7b27

      SHA512

      c5553da329fc3bd82e35c5f42e3b1b61828bc8f62180495f0f4a581e8cb30ebc248c46a1f12747dfd1d2e2520cca9eb74c5cd1a1965a4cc4b2839eb9fcb8900e

    • memory/2156-96-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-102-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-95-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-94-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-93-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-109-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-86-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-108-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-92-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-107-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-91-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-87-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-106-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-90-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-105-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-104-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-103-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-97-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-101-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-85-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-84-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-83-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-80-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2156-89-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-99-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-98-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2156-88-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2404-1-0x0000000000070000-0x0000000000156000-memory.dmp

      Filesize

      920KB

    • memory/2404-5-0x0000000000570000-0x0000000000582000-memory.dmp

      Filesize

      72KB

    • memory/2404-49-0x0000000074E00000-0x00000000754EE000-memory.dmp

      Filesize

      6.9MB

    • memory/2404-2-0x0000000074E00000-0x00000000754EE000-memory.dmp

      Filesize

      6.9MB

    • memory/2404-3-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

      Filesize

      4KB

    • memory/2404-4-0x0000000074E00000-0x00000000754EE000-memory.dmp

      Filesize

      6.9MB

    • memory/2404-6-0x0000000008190000-0x0000000008250000-memory.dmp

      Filesize

      768KB

    • memory/2404-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

      Filesize

      4KB

    • memory/2520-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-37-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-21-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-23-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-25-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-27-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-33-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2520-36-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2520-19-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/3064-48-0x0000000000F30000-0x0000000001016000-memory.dmp

      Filesize

      920KB

    • memory/3064-50-0x0000000000320000-0x0000000000332000-memory.dmp

      Filesize

      72KB