Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    04-12-2024 03:17

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 2 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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 54 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:2196
    • 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:2584
    • 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:2596
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rJxVpYQDxuAdz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE31E.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:236
    • 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:1488
      • 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:3016
        • 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:2180
        • 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:3028
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rJxVpYQDxuAdz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8F73.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2492
        • 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:2436

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\tmpE31E.tmp

    Filesize

    1KB

    MD5

    cf23546e8546927b763dd80f0622af50

    SHA1

    92e030b9e51d5be838145da24b11f2a0435afab6

    SHA256

    f2ffc55432628655873fa49966f6240af7749e9224bfd2970796124fcdfd21b2

    SHA512

    1eada1eb6e38a25e4e777d6aa335823e7454e72624b11097fd027d4b70cf20429f55283b5d2970ad48a0727641445824f7fd4f0b87e7d6f248e9320a1db8065b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\4KPR0PQCIPMJWQEDQX67.temp

    Filesize

    7KB

    MD5

    9d717acc1495414010388ce6c6deabcd

    SHA1

    f78158678cf1f14316ffee94fd41657904c98898

    SHA256

    2987315aeec26f8328dd6fcee8682f878bfb2402e1218e1b17ad8eb9f3b03af5

    SHA512

    3bd53708227a459b3bdccfa996017ca326b79a8229726ae92d487f944172237b08e0363d9e634a932d7e2143273f62d9d80bd043b9c1f0a3a17d9fc95b1d29d3

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

    Filesize

    7KB

    MD5

    a90ef71ca8beb35d73534dd3cbe2f176

    SHA1

    1c48b74eca31ea0d936c4bd061da9a247397d87f

    SHA256

    c531236ea0d791c1d1c41d593d3543670877d543cb45fce077353d7864bf7337

    SHA512

    772c317b6acfc9f83f3652190796e01005b353faa9dcd788f64553d747e5b01a36596f7e9b80b39aad17094232fe90f904b448f9846eaaeffca2b294213df238

  • \??\PIPE\srvsvc

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/1488-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1488-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1488-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2196-1-0x0000000001310000-0x00000000013F6000-memory.dmp

    Filesize

    920KB

  • memory/2196-3-0x0000000073E6E000-0x0000000073E6F000-memory.dmp

    Filesize

    4KB

  • memory/2196-4-0x0000000073E60000-0x000000007454E000-memory.dmp

    Filesize

    6.9MB

  • memory/2196-5-0x00000000002D0000-0x00000000002E2000-memory.dmp

    Filesize

    72KB

  • memory/2196-6-0x0000000006070000-0x0000000006130000-memory.dmp

    Filesize

    768KB

  • memory/2196-2-0x0000000073E60000-0x000000007454E000-memory.dmp

    Filesize

    6.9MB

  • memory/2196-39-0x0000000073E60000-0x000000007454E000-memory.dmp

    Filesize

    6.9MB

  • memory/2196-0-0x0000000073E6E000-0x0000000073E6F000-memory.dmp

    Filesize

    4KB

  • memory/2436-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-108-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-79-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2436-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-88-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-89-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-90-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-91-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-92-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-93-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-82-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-97-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-98-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-103-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-104-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-105-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-106-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2436-107-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3016-49-0x00000000013A0000-0x0000000001486000-memory.dmp

    Filesize

    920KB