Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25-03-2024 16:26

General

  • Target

    Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe

  • Size

    966KB

  • MD5

    f3e307899834694db498e895cac1dbfc

  • SHA1

    70b232b365656082f79d07c4c4db584d90befa6f

  • SHA256

    e825cdfc2e4a1b1c6a56602cce16417f55e4f42c699cea18b4dddbbf85d9527f

  • SHA512

    da23dd49a1ef7b281eb90ddf1c166d4f30a35d0fee2ddafcd146932e4a429669724550d3451549a852361a0d1e09362b13545cace490944dba8afbb28f4def9e

  • SSDEEP

    12288:24CMwo4aGsl0flTM3gk1LOjUnF5r1xyJnyrO2xM3agDrkPNCT7vI1Jhc0Xr1A:mF9TMprr3yRz2i9yNk7vI1Jhc4r

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

91.92.247.97:2505

stefracino.store:2505

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

    true

  • install_flag

    false

  • keylog_crypt

    true

  • keylog_file

    togs.dat

  • keylog_flag

    false

  • keylog_folder

    stefcos

  • mouse_option

    false

  • mutex

    Rmc-POOUYY

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe
    "C:\Users\Admin\AppData\Local\Temp\Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1288
    • 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\Ref [HSBC Ref# H240322-X793Y1] Transaction_Confirmation_2024.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2616
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UlvywtFnmZtH.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2564
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UlvywtFnmZtH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9943.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2416
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:1232
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        2⤵
          PID:3056
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
          2⤵
          • Suspicious behavior: GetForegroundWindowSpam
          PID:1948

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp9943.tmp

        Filesize

        1KB

        MD5

        b338ed8878f6e1471e061dde45f83012

        SHA1

        d65949ace7b565f4ae10148d25a99b10cc781605

        SHA256

        39da6e37b3cca8829b88ae87e09b778601e7b8d3349fd1e9e2eacaaf51785d8b

        SHA512

        cf4ff805781421ac9b62c6d1a8d185263b3053bb1d5e7e031b380c048499a542fe515d7aac5e24bbba70a9abe2e06f39d8310047a17e12924ba6137f2dfd4e28

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\RHYJEI419AV3OIO9M4ZM.temp

        Filesize

        7KB

        MD5

        84caf5967138d71086202e97532bf1a5

        SHA1

        d1bbc9de1affa643a7830e6e1f049a34c7164918

        SHA256

        ab1b219cafe5da829026f33bd94a475cf068d4031c5793093548ac71e991ae91

        SHA512

        e0b027e459c22a2b0d08710227d5ba4279d4de396146c22dff8152f4ebac1d0f693aee971171718aa1d81024c0192f56bd45e9c8337870e451cacffde52cd0f8

      • memory/1288-40-0x0000000074440000-0x0000000074B2E000-memory.dmp

        Filesize

        6.9MB

      • memory/1288-1-0x0000000074440000-0x0000000074B2E000-memory.dmp

        Filesize

        6.9MB

      • memory/1288-2-0x0000000000B30000-0x0000000000B70000-memory.dmp

        Filesize

        256KB

      • memory/1288-3-0x0000000000330000-0x0000000000342000-memory.dmp

        Filesize

        72KB

      • memory/1288-4-0x00000000003D0000-0x00000000003DC000-memory.dmp

        Filesize

        48KB

      • memory/1288-5-0x00000000054D0000-0x0000000005590000-memory.dmp

        Filesize

        768KB

      • memory/1288-0-0x0000000000F20000-0x0000000001016000-memory.dmp

        Filesize

        984KB

      • memory/1948-41-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-39-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-50-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-22-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-23-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-26-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-24-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-28-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-30-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-32-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-34-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-36-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

        Filesize

        4KB

      • memory/1948-37-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-49-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-48-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-47-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-42-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-43-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/1948-44-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2564-46-0x000000006DF60000-0x000000006E50B000-memory.dmp

        Filesize

        5.7MB

      • memory/2564-19-0x000000006DF60000-0x000000006E50B000-memory.dmp

        Filesize

        5.7MB

      • memory/2564-21-0x00000000025D0000-0x0000000002610000-memory.dmp

        Filesize

        256KB

      • memory/2616-45-0x000000006DF60000-0x000000006E50B000-memory.dmp

        Filesize

        5.7MB

      • memory/2616-18-0x000000006DF60000-0x000000006E50B000-memory.dmp

        Filesize

        5.7MB

      • memory/2616-20-0x000000006DF60000-0x000000006E50B000-memory.dmp

        Filesize

        5.7MB