Analysis

  • max time kernel
    128s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220718-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-07-2022 11:58

General

  • Target

    Receipt.exe

  • Size

    1.1MB

  • MD5

    92220ac479344c60ae11a3d8c74a2b36

  • SHA1

    c8170dcc4766b603e6cad4d854f9ec3b7c4dcce2

  • SHA256

    e1a77fa5285413469295dae451a81e68613360acbd05c127701e6e289279acfd

  • SHA512

    cc1b11100fcb419a94b33215cad1949778e9e694977c09d77e384269ef9a012aba7d107cd00acd84c0a5114773b1a3c8e11e262e779e78624fcda318eb29c43f

Malware Config

Extracted

Family

netwire

C2

185.140.53.61:3363

185.140.53.61:3365

Attributes
  • activex_autorun

    false

  • copy_executable

    false

  • delete_original

    false

  • host_id

    HostId-%Rand%

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • offline_keylogger

    true

  • password

    move4ward

  • registry_autorun

    false

  • use_mutex

    false

Signatures

  • NetWire RAT payload 4 IoCs
  • Netwire

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Receipt.exe
    "C:\Users\Admin\AppData\Local\Temp\Receipt.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3436
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cPbvjkpUOOc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp632E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:952
    • C:\Users\Admin\AppData\Local\Temp\Receipt.exe
      "{path}"
      2⤵
        PID:1732
      • C:\Users\Admin\AppData\Local\Temp\Receipt.exe
        "{path}"
        2⤵
          PID:1764

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp632E.tmp

        Filesize

        1KB

        MD5

        748f2d38c6219eb5bc5e1fb1d544a5ef

        SHA1

        9bf0e27074a7be4aa4366c00c3bf81644751b86d

        SHA256

        235c5a0214282e0a5571db1b035129e59bf2c763ddb4bfa05f26aca73ab677ec

        SHA512

        efc15340027f7441e1ac037f58799298467464366871b3e0c396c31e3279211a66f9e1bff8821d707a4c835a2d5b6943ed47776ccb5b7a8feed50cef98b45c00

      • memory/952-137-0x0000000000000000-mapping.dmp

      • memory/1732-139-0x0000000000000000-mapping.dmp

      • memory/1764-145-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/1764-144-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/1764-143-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/1764-141-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/1764-140-0x0000000000000000-mapping.dmp

      • memory/3436-133-0x00000000058C0000-0x0000000005952000-memory.dmp

        Filesize

        584KB

      • memory/3436-136-0x0000000008300000-0x0000000008366000-memory.dmp

        Filesize

        408KB

      • memory/3436-135-0x0000000005A50000-0x0000000005AA6000-memory.dmp

        Filesize

        344KB

      • memory/3436-134-0x00000000057C0000-0x00000000057CA000-memory.dmp

        Filesize

        40KB

      • memory/3436-130-0x0000000000C60000-0x0000000000D88000-memory.dmp

        Filesize

        1.2MB

      • memory/3436-132-0x0000000005DD0000-0x0000000006374000-memory.dmp

        Filesize

        5.6MB

      • memory/3436-131-0x00000000056E0000-0x000000000577C000-memory.dmp

        Filesize

        624KB