Analysis

  • max time kernel
    67s
  • max time network
    177s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    12-07-2021 11:56

General

  • Target

    pLL3xaRbYxcknvF.exe

  • Size

    907KB

  • MD5

    35b9bdb43146e7599d860b225e546153

  • SHA1

    f016d7b21a0d186da7868a01a9a0c42d302c8c92

  • SHA256

    55408de4977faad2d86550bfbeb67378788dbb300cf37ad4e19d05711aecb1d4

  • SHA512

    620212d5f9c1b4145912d32db40bf4becdd4d23b8d94fedbc662c059244c5fa6d73ab7c82b542cfdd884ac0641d0c4d7af151f98eeed7b0c93f74e3282987bc3

Malware Config

Extracted

Family

netwire

C2

dxyasser0.zapto.org:1212

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

    123

  • registry_autorun

    false

  • startup_name

  • use_mutex

    false

Signatures

  • NetWire RAT payload 3 IoCs
  • Netwire

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

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

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\pLL3xaRbYxcknvF.exe
    "C:\Users\Admin\AppData\Local\Temp\pLL3xaRbYxcknvF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1080
    • 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\pLL3xaRbYxcknvF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:468
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:552

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/468-73-0x00000000047A0000-0x00000000047A1000-memory.dmp
      Filesize

      4KB

    • memory/468-94-0x0000000005740000-0x0000000005741000-memory.dmp
      Filesize

      4KB

    • memory/468-71-0x0000000004830000-0x0000000004831000-memory.dmp
      Filesize

      4KB

    • memory/468-108-0x0000000006230000-0x0000000006231000-memory.dmp
      Filesize

      4KB

    • memory/468-72-0x0000000002500000-0x0000000002501000-memory.dmp
      Filesize

      4KB

    • memory/468-65-0x0000000000000000-mapping.dmp
    • memory/468-66-0x00000000768B1000-0x00000000768B3000-memory.dmp
      Filesize

      8KB

    • memory/468-93-0x00000000057E0000-0x00000000057E1000-memory.dmp
      Filesize

      4KB

    • memory/468-86-0x00000000062A0000-0x00000000062A1000-memory.dmp
      Filesize

      4KB

    • memory/468-70-0x0000000000AF0000-0x0000000000AF1000-memory.dmp
      Filesize

      4KB

    • memory/468-109-0x0000000006240000-0x0000000006241000-memory.dmp
      Filesize

      4KB

    • memory/468-85-0x000000007EF30000-0x000000007EF31000-memory.dmp
      Filesize

      4KB

    • memory/468-76-0x0000000000A72000-0x0000000000A73000-memory.dmp
      Filesize

      4KB

    • memory/468-75-0x0000000000A70000-0x0000000000A71000-memory.dmp
      Filesize

      4KB

    • memory/468-84-0x0000000005670000-0x0000000005671000-memory.dmp
      Filesize

      4KB

    • memory/468-79-0x0000000005610000-0x0000000005611000-memory.dmp
      Filesize

      4KB

    • memory/552-74-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

    • memory/552-67-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

    • memory/552-68-0x000000000040242D-mapping.dmp
    • memory/1080-59-0x0000000000EE0000-0x0000000000EE1000-memory.dmp
      Filesize

      4KB

    • memory/1080-61-0x0000000007270000-0x0000000007271000-memory.dmp
      Filesize

      4KB

    • memory/1080-64-0x00000000008B0000-0x00000000008EE000-memory.dmp
      Filesize

      248KB

    • memory/1080-63-0x0000000004CC0000-0x0000000004D36000-memory.dmp
      Filesize

      472KB

    • memory/1080-62-0x0000000000350000-0x000000000035F000-memory.dmp
      Filesize

      60KB