Analysis

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

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    13-08-2024 13:52

General

  • Target

    Heatecholdings PO #50927.bat.exe

  • Size

    1.1MB

  • MD5

    feefffb2f85e6449769501809c3da84c

  • SHA1

    e8841eb6afd72c1487ec5323a5bc4f37bfae0dcf

  • SHA256

    b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244

  • SHA512

    83a4c56f10148660c5c528f1b637dc40ffd1337a87be2f50161813c9d36641a48cf7babf8d0dfea2414f38da43a95529c8fe00e8c135243b380ea518496e9457

  • SSDEEP

    24576:hNDsYdZxwZQSkazcndb4MeFCu5+eADOWWiKDZbD0E+ou3x9+rreMoB:7teZExndpegSgLk/0E+h3L+rW

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

65.21.66.222:9821

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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-LDQ8V0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2324
    • 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\Heatecholdings PO #50927.bat.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1068
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NUKXaCFNwRYYxi.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1700
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NUKXaCFNwRYYxi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5E.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:760
    • C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe
      "C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe"
      2⤵
        PID:2760
      • C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe
        "C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2680

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp5E.tmp

      Filesize

      1KB

      MD5

      97b83a658064964a0535002a0aad4b8c

      SHA1

      c5dc9f6460c910cfe25dac75773fb4508d76faa6

      SHA256

      45dc860e57f4a275c5770843c32ed1121144ee0b81752f01c67c4399f7d9ae60

      SHA512

      c8d9d66ea9c245d151237bc787acbeb4f4655462cf4052e71deb7d8872e1cf4bd6c3bfd0fe98e43d6f05f6bb788de150fa67ce46484a581d7aeeb8cc3cb0ffec

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\WLRC7YPHYNICP9ZQXNFH.temp

      Filesize

      7KB

      MD5

      8f7af985774cf0ac3602e88aa8ab28ce

      SHA1

      953796573fd88a6acb43f43b69c79207b88fe226

      SHA256

      24e876a500ea2fddcca026968da92480f1fc949c7b2bc1c6a463969086daeafa

      SHA512

      a76cd8a96b69a81dcc3a7b550b903a5cc7b0b2cfab498bad2d847fec641e71fd734f87f30d91c62aef1077cd00c5b7f63214901be875842dca21928d2ab3e02f

    • memory/2324-0-0x00000000742AE000-0x00000000742AF000-memory.dmp

      Filesize

      4KB

    • memory/2324-1-0x00000000008C0000-0x00000000009D0000-memory.dmp

      Filesize

      1.1MB

    • memory/2324-2-0x00000000742A0000-0x000000007498E000-memory.dmp

      Filesize

      6.9MB

    • memory/2324-3-0x00000000008A0000-0x00000000008BE000-memory.dmp

      Filesize

      120KB

    • memory/2324-4-0x0000000001F70000-0x0000000001F86000-memory.dmp

      Filesize

      88KB

    • memory/2324-5-0x0000000003FF0000-0x00000000040AE000-memory.dmp

      Filesize

      760KB

    • memory/2324-40-0x00000000742A0000-0x000000007498E000-memory.dmp

      Filesize

      6.9MB

    • memory/2324-39-0x00000000742AE000-0x00000000742AF000-memory.dmp

      Filesize

      4KB

    • memory/2680-36-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-31-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-26-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-35-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-38-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-37-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-18-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2680-32-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-28-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-20-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-24-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-22-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-41-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-42-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-43-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-46-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-47-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-48-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-49-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-50-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-51-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-52-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2680-53-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB