Analysis

  • max time kernel
    108s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220715-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220715-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-07-2022 15:53

General

  • Target

    Confirmation Slip.exe

  • Size

    997KB

  • MD5

    f39a843414e28e92bbc08f7f95f36b48

  • SHA1

    fef5d5afb0c62b01b75d186f810edd876a98b088

  • SHA256

    8d14cdd3d37291e30726d6a54012503a974d8b3a7107173f71b839cb4e679ebe

  • SHA512

    5546ae7e33eb1a44b261e2df05b4fd31b9d6795443d623554753b0a31fb657cfd88c1ea8c35d971ab281225e22c5eb30699db222bcab57b48aa69076ee69a7c5

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 3 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
  • 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\Confirmation Slip.exe
    "C:\Users\Admin\AppData\Local\Temp\Confirmation Slip.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YPDRvcu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1807.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:260
    • C:\Users\Admin\AppData\Local\Temp\Confirmation Slip.exe
      "{path}"
      2⤵
        PID:3016
      • C:\Users\Admin\AppData\Local\Temp\Confirmation Slip.exe
        "{path}"
        2⤵
          PID:3024

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp1807.tmp

        Filesize

        1KB

        MD5

        e75bed927afd920429c16c62c40646a9

        SHA1

        22a2b4eda98bb0aa0978cc1e1dad86aa58331d09

        SHA256

        664ad419ac0b2feb74d8a893c0ee13cd47ca5dc1b4911430756e95fa7cb5bb93

        SHA512

        feec077e5c0e10b3c0480c49e217c12b0780a69ff9138597bad74acd55bcc71fd78dc4a025b3d1378e4326b5e5adcaabdf13ca39d5723c37acfff5b2a9631e3d

      • memory/260-136-0x0000000000000000-mapping.dmp

      • memory/3016-138-0x0000000000000000-mapping.dmp

      • memory/3024-139-0x0000000000000000-mapping.dmp

      • memory/3024-140-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/3024-142-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/3024-143-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4692-134-0x00000000057C0000-0x00000000057CA000-memory.dmp

        Filesize

        40KB

      • memory/4692-135-0x00000000059A0000-0x00000000059F6000-memory.dmp

        Filesize

        344KB

      • memory/4692-133-0x00000000058A0000-0x0000000005932000-memory.dmp

        Filesize

        584KB

      • memory/4692-132-0x0000000005E50000-0x00000000063F4000-memory.dmp

        Filesize

        5.6MB

      • memory/4692-131-0x0000000005800000-0x000000000589C000-memory.dmp

        Filesize

        624KB

      • memory/4692-130-0x0000000000D40000-0x0000000000E40000-memory.dmp

        Filesize

        1024KB