Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-04-2024 11:33

General

  • Target

    2.exe

  • Size

    959KB

  • MD5

    9e9bc9f31687d4921c6d50dc6f36109b

  • SHA1

    aeb492cc63c12f0655d718d429ccdefbc89ea725

  • SHA256

    652a6e32539182b098e4fd1d381f757b1605609cc52fa665189458a6f7c5945a

  • SHA512

    5bd8e9b7fe95caaf446ee5cd7446565a17ef39065adf2e61ad9ebaa1cb7712afd85c913c9a53222bfe4b1ba02d909a19c7df7b01326a7b12a8f484a51599773f

  • SSDEEP

    12288:avdsbuRtDtfGlug6m5ebj9UgmLM/4p90krg3bBA+SodRx2/ZVVAN2p0bY3BNlu:/Et9KWJ/w0krgrZTUB8Y3B

Malware Config

Extracted

Family

remcos

Botnet

BUDDY

C2

192.210.201.57:52499

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-LMLI87

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2.exe
    "C:\Users\Admin\AppData\Local\Temp\2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4356
    • C:\Users\Admin\AppData\Local\Temp\2.exe
      "C:\Users\Admin\AppData\Local\Temp\2.exe"
      2⤵
        PID:4988
      • C:\Users\Admin\AppData\Local\Temp\2.exe
        "C:\Users\Admin\AppData\Local\Temp\2.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4208
        • C:\Users\Admin\AppData\Local\Temp\2.exe
          C:\Users\Admin\AppData\Local\Temp\2.exe /stext "C:\Users\Admin\AppData\Local\Temp\vvlb"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3140
        • C:\Users\Admin\AppData\Local\Temp\2.exe
          C:\Users\Admin\AppData\Local\Temp\2.exe /stext "C:\Users\Admin\AppData\Local\Temp\xpruytc"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:4864
        • C:\Users\Admin\AppData\Local\Temp\2.exe
          C:\Users\Admin\AppData\Local\Temp\2.exe /stext "C:\Users\Admin\AppData\Local\Temp\irwerlninm"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2272

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat
      Filesize

      144B

      MD5

      dbb290314cab69c97a7e9f29f05466f9

      SHA1

      89c69f1c44184b27ab24a1398060dd213f1a4c68

      SHA256

      f96789f567a972a3a8854b0c8f1615d4dd6e26dbbb69b61e1e15ac34a3698161

      SHA512

      5b21cc4d053a560b71ca2828d1e285893756c947af463387a46d0dcc27a300cffbc8b21d367012068de9343d5e76109422fbad2feb4158dcd93d5daf47768b3c

    • C:\Users\Admin\AppData\Local\Temp\vvlb
      Filesize

      4KB

      MD5

      63a3d218b0d233efc9806729feba705a

      SHA1

      3cda6c59e0b8115d8538c8ff0d94a49294d516ac

      SHA256

      66ceb453b5931baa8d942d514cc1dcc41a24ab59313c0621daa9920bd0566bfd

      SHA512

      d0cfb106b57a4e90523c194d073a131bc65461d8e792b0be51aef89aa413dded53c2aba723fc677f68b1211411a0e105b5771cafa045d3e11d54db578577b683

    • memory/2272-46-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2272-44-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2272-39-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2272-32-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/3140-27-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/3140-50-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/3140-35-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/3140-31-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/4208-15-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-62-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-92-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-13-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-91-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-16-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-18-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-19-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-20-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-21-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-22-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-23-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-24-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-26-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-10-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-84-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-83-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-76-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-75-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-68-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-67-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-65-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4208-11-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-58-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-57-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4208-47-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-48-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4208-55-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4208-56-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4208-52-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/4356-6-0x00000000051D0000-0x00000000051E0000-memory.dmp
      Filesize

      64KB

    • memory/4356-9-0x000000000A0F0000-0x000000000A18C000-memory.dmp
      Filesize

      624KB

    • memory/4356-4-0x00000000051F0000-0x0000000005200000-memory.dmp
      Filesize

      64KB

    • memory/4356-5-0x0000000004F70000-0x0000000004F7A000-memory.dmp
      Filesize

      40KB

    • memory/4356-7-0x0000000006190000-0x000000000619C000-memory.dmp
      Filesize

      48KB

    • memory/4356-1-0x0000000075330000-0x0000000075AE0000-memory.dmp
      Filesize

      7.7MB

    • memory/4356-3-0x0000000004F80000-0x0000000005012000-memory.dmp
      Filesize

      584KB

    • memory/4356-14-0x0000000075330000-0x0000000075AE0000-memory.dmp
      Filesize

      7.7MB

    • memory/4356-2-0x00000000055E0000-0x0000000005B84000-memory.dmp
      Filesize

      5.6MB

    • memory/4356-0-0x0000000000480000-0x0000000000574000-memory.dmp
      Filesize

      976KB

    • memory/4356-8-0x0000000007960000-0x0000000007A20000-memory.dmp
      Filesize

      768KB

    • memory/4864-45-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/4864-28-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/4864-33-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/4864-38-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB