Analysis

  • max time kernel
    147s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/05/2024, 14:57

General

  • Target
    ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe
  • Size 926KB
  • Sample240523-sbmwwafb32
  • SHA256 ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 104.250.180.178:7902

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Microsoft .exe

  • copy_folder

    Microsoft

  • 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

    Microsoft -QUCX7D

  • 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 5 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 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe
    "C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4864
    • C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe
      "C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4036
      • C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe
        C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe /stext "C:\Users\Admin\AppData\Local\Temp\klpbssaycrn"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:3400
      • C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe
        C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe /stext "C:\Users\Admin\AppData\Local\Temp\unultllsyzfsyh"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2920
      • C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe
        C:\Users\Admin\AppData\Local\Temp\ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf.exe /stext "C:\Users\Admin\AppData\Local\Temp\ehaetdwtmhxfjnqkv"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4184

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        klpbssaycrn

        • Path C:\Users\Admin\AppData\Local\Temp\klpbssaycrn
        • Size 4KB
        • SHA256 54c101b6b1241b6a0574a66e5a5b9bddc6c60a4daf7338dba6fe3f65b27382af
        • MD5 SHA1 SHA512 SSDEEP

        memory/2920-33-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/2920-38-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/2920-31-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/2920-27-0x0000000000400000-0x0000000000462000-memory.dmp

        memory/3400-25-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3400-42-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3400-28-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3400-29-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3400-32-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/4036-11-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-48-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/4036-58-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-14-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-17-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-16-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-15-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-57-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-19-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-20-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-21-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-22-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-24-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-56-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-55-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-53-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-54-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-52-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-51-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-50-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-49-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-12-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/4036-47-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/4036-44-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/4184-34-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/4184-39-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/4184-40-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/4864-6-0x0000000006940000-0x0000000006A22000-memory.dmp

        memory/4864-4-0x0000000005200000-0x000000000520A000-memory.dmp

        memory/4864-5-0x0000000075010000-0x00000000757C0000-memory.dmp

        memory/4864-2-0x0000000005720000-0x0000000005CC4000-memory.dmp

        memory/4864-3-0x0000000005210000-0x00000000052A2000-memory.dmp

        memory/4864-1-0x0000000000720000-0x000000000080E000-memory.dmp

        memory/4864-7-0x0000000005610000-0x000000000562A000-memory.dmp

        memory/4864-8-0x0000000005630000-0x0000000005640000-memory.dmp

        memory/4864-9-0x0000000006750000-0x0000000006810000-memory.dmp

        memory/4864-10-0x0000000009160000-0x00000000091FC000-memory.dmp

        memory/4864-18-0x0000000075010000-0x00000000757C0000-memory.dmp

        memory/4864-0-0x000000007501E000-0x000000007501F000-memory.dmp