Analysis

  • max time kernel
    146s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    21/02/2022, 22:35

General

  • Target
    PAYMENT_.exe
  • Size 813KB
  • Sample220221-2hptgsbcb5
  • SHA256 41dbe67f8521046283d43077e26d6fef8a830e94f6ad1b1765dc5056f8d81846
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • netwire

C2
  • 185.244.30.51:3373

  • 185.244.30.51:3376

Attributes
  • activex_autorun

    false

  • activex_key

  • copy_executable

    false

  • delete_original

    false

  • host_id

    HostId-%Rand%

  • install_path

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • mutex

  • offline_keylogger

    true

  • password

    bigfavor12

  • registry_autorun

    false

  • startup_name

  • use_mutex

    false

Signatures

  • NetWire RAT payload 2 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies data under HKEY_USERS 50 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PAYMENT_.exe
    "C:\Users\Admin\AppData\Local\Temp\PAYMENT_.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3820
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mZkwuSmrC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2195.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2684
    • C:\Users\Admin\AppData\Local\Temp\PAYMENT_.exe
      "{path}"
      2⤵
        PID:3584
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k NetworkService -p
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:2760
    • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
      C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
      1⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:820
    • C:\Windows\system32\MusNotifyIcon.exe
      %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
      1⤵
      • Checks processor information in registry
      PID:1448

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/3584-138-0x0000000000400000-0x0000000000433000-memory.dmp

          memory/3584-139-0x0000000000400000-0x0000000000433000-memory.dmp

          memory/3820-130-0x000000007531E000-0x000000007531F000-memory.dmp

          memory/3820-131-0x0000000000410000-0x00000000004E2000-memory.dmp

          memory/3820-132-0x0000000005530000-0x0000000005AD4000-memory.dmp

          memory/3820-133-0x0000000004E80000-0x0000000004F12000-memory.dmp

          memory/3820-134-0x0000000005160000-0x0000000005161000-memory.dmp

          memory/3820-135-0x0000000004F30000-0x0000000004F3A000-memory.dmp

          memory/3820-136-0x0000000007150000-0x00000000071EC000-memory.dmp