Analysis

  • max time kernel
    129s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-02-2023 14:22

General

  • Target

    Vestel Teklif talebi.rtf

  • Size

    39KB

  • MD5

    2f33e743eb105ce162a713b1b21e429d

  • SHA1

    ba35963190d4f31ca073682f412849970ad7019d

  • SHA256

    df770aabdc39c9255b2eab82391b1246ca57f2108c670fcba0f40b7c46c7ddb7

  • SHA512

    c1129baea902067a3a44bbdfb5bc8958ef67cafb6714373669da2b112feacbfff73623d34028d7678eb710b3b3479315ef2a7318ccc0454979c6d0dbe78f1c20

  • SSDEEP

    768:5Fx0XaIsnPRIa4fwJMGNH2YRrenTu1HBO85sH4mY6u:5f0Xvx3EMKHFR/HBO85sYou

Malware Config

Extracted

Family

netwire

C2

zekeriyasolek44.duckdns.org:3102

Attributes
  • activex_autorun

    false

  • copy_executable

    false

  • delete_original

    false

  • host_id

    Valentine End

  • install_path

    %Windows%\Windows DataPoint\Windows Data Start.exe

  • lock_executable

    false

  • mutex

    Windows

  • offline_keylogger

    false

  • password

    Password

  • registry_autorun

    false

  • use_mutex

    false

Signatures

  • NetWire RAT payload 12 IoCs
  • Netwire

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

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Vestel Teklif talebi.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1200
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1156
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:1496
      • C:\Users\Admin\AppData\Roaming\chungd4862.exe
        "C:\Users\Admin\AppData\Roaming\chungd4862.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:780
        • C:\Users\Admin\AppData\Roaming\chungd4862.exe
          "C:\Users\Admin\AppData\Roaming\chungd4862.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of WriteProcessMemory
          PID:2004
          • C:\Windows\SysWOW64\%Windows\Windows DataPoint\Windows Data Start.exe
            "C:\Windows\System32\%Windows\Windows DataPoint\Windows Data Start.exe" -m "C:\Users\Admin\AppData\Roaming\chungd4862.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1020
            • C:\Windows\SysWOW64\%Windows\Windows DataPoint\Windows Data Start.exe
              "C:\Windows\SysWOW64\%Windows\Windows DataPoint\Windows Data Start.exe"
              5⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Drops file in System32 directory
              PID:1752

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Exploitation for Client Execution

    1
    T1203

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
      Filesize

      20KB

      MD5

      06224710f468479668228f9db2278ed0

      SHA1

      3e866102be77057f81d47fc8aaecd614186365ff

      SHA256

      00d0f9c9bc671c0a4d96ef997af49563c9384331e62b94b024fc0f30e39c744d

      SHA512

      b2cd16ccd49071155eb2764c85127e8c18465485182280a01087230aa79145cac25b3b938821725457119ab808fa23625ea86e6ac1872e3b3dfadc735ec39584

    • C:\Users\Admin\AppData\Roaming\chungd4862.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • C:\Users\Admin\AppData\Roaming\chungd4862.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • C:\Users\Admin\AppData\Roaming\chungd4862.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • C:\Users\Admin\AppData\Roaming\chungd4862.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • C:\Windows\SysWOW64\%Windows\Windows DataPoint\Windows Data Start.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • C:\Windows\SysWOW64\%Windows\Windows DataPoint\Windows Data Start.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • C:\Windows\SysWOW64\%Windows\Windows DataPoint\Windows Data Start.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • \Users\Admin\AppData\Roaming\chungd4862.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • \Windows\SysWOW64\%Windows\Windows DataPoint\Windows Data Start.exe
      Filesize

      1.0MB

      MD5

      9e3dac5c792d10815c94ae9474c93aa8

      SHA1

      da3ffcfa7c41e842ea80548105fac93252149550

      SHA256

      e9b94cae938b5549cc9645b0e15337bc0ff894b9413305351937cf7831347d85

      SHA512

      69fe825e8c41cdc852407eb2d396344341ceeabcec2edb0bebe269245ca305796975a88d81d557b5cde3fe84c235fb4c26bbad60541b19709ede1240387c956b

    • memory/780-68-0x0000000004D90000-0x0000000004DD0000-memory.dmp
      Filesize

      256KB

    • memory/780-73-0x00000000004D0000-0x00000000004E4000-memory.dmp
      Filesize

      80KB

    • memory/780-74-0x0000000004D90000-0x0000000004DD0000-memory.dmp
      Filesize

      256KB

    • memory/780-76-0x0000000000510000-0x000000000051C000-memory.dmp
      Filesize

      48KB

    • memory/780-77-0x0000000007F90000-0x0000000008062000-memory.dmp
      Filesize

      840KB

    • memory/780-78-0x0000000000740000-0x000000000078C000-memory.dmp
      Filesize

      304KB

    • memory/780-67-0x0000000000F80000-0x0000000001092000-memory.dmp
      Filesize

      1.1MB

    • memory/1020-99-0x0000000004F40000-0x0000000004F80000-memory.dmp
      Filesize

      256KB

    • memory/1020-98-0x0000000000930000-0x0000000000A42000-memory.dmp
      Filesize

      1.1MB

    • memory/1200-117-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1200-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1752-133-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/1752-132-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/1752-131-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/1752-130-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/1752-129-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/1752-128-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/1752-124-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2004-82-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-80-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-81-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-79-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-96-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-86-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-83-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-89-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-84-0x0000000000400000-0x000000000044F000-memory.dmp
      Filesize

      316KB

    • memory/2004-85-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB