Overview

overview

10

Static

static

5

a534118179...c4.exe

windows7-x64

10

a534118179...c4.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    181s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    07/01/2024, 19:22

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General

  • Target
    a5341181798e270087fb6aa947a31ec4.exe
  • Size 512KB
  • Sample240107-x3ef2adcc5
  • SHA256 a40dc4273413f6d34ede962fd52d484e64008bf15e6d95118247d317f7d8a735
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
evasionpersistencespywarestealertrojan

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • Windows security bypass 2 TTPs 5 IoCs
    evasiontrojan
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Windows security modification 2 TTPs 6 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
    persistence
  • AutoIT Executable 8 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 33 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of FindShellTrayWindow 60 IoCs
  • Suspicious use of SendNotifyMessage 44 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\a5341181798e270087fb6aa947a31ec4.exe
    "C:\Users\Admin\AppData\Local\Temp\a5341181798e270087fb6aa947a31ec4.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Windows\SysWOW64\nxyeylgkrt.exe
      nxyeylgkrt.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:744
      • C:\Windows\SysWOW64\vbuhjbgl.exe
        C:\Windows\system32\vbuhjbgl.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        PID:2872
    • C:\Windows\SysWOW64\nzyjvcvojiebn.exe
      nzyjvcvojiebn.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2492
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2936
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:936
      • C:\Windows\SysWOW64\vbuhjbgl.exe
        vbuhjbgl.exe
        2⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2268
      • C:\Windows\SysWOW64\ltrquzcinzkosno.exe
        ltrquzcinzkosno.exe
        2⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2560
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2740

    Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          PROTTPLN.DOC.exe
          • Path C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLN.DOC.exe
          • Size 512KB
          • SHA256 972e07516e1ea39cb0cdb0269679339b6ba47e7b1a5a2c3bb1030e657cbad461
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          PROTTPLV.DOC.exe
          • Path C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe
          • Size 512KB
          • SHA256 abf26235bf624c05f12ec173faed81513bc0835ea4d05e3066b16e01ac504a14
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          ImportMeasure.doc.exe
          • Path C:\Users\Admin\Documents\ImportMeasure.doc.exe
          • Size 512KB
          • SHA256 73353af33337e8e32e672a56538fb8daf8cd40db4c8cfc2cbb544755515a97ed
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          ltrquzcinzkosno.exe
          • Path C:\Windows\SysWOW64\ltrquzcinzkosno.exe
          • Size 512KB
          • SHA256 88ef21d835c5299c72d60efa7603955777acb8f7c19e2116d1cb2b3a1e731700
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          nzyjvcvojiebn.exe
          • Path C:\Windows\SysWOW64\nzyjvcvojiebn.exe
          • Size 512KB
          • SHA256 523c1367fead2777cda22e946b63bb5bb72b9ffb6649ad1a75c47ee1912dd141
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          vbuhjbgl.exe
          • Path C:\Windows\SysWOW64\vbuhjbgl.exe
          • Size 512KB
          • SHA256 4097e728bf3411ec59b6847856f7f6dfc2b8768a1e242c97993e4ef5f3a06813
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          mydoc.rtf
          • Path C:\Windows\mydoc.rtf
          • Size 223B
          • SHA256 85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2
          • MD5 SHA1 SHA512
          Submit Download

          nxyeylgkrt.exe
          • Path \Windows\SysWOW64\nxyeylgkrt.exe
          • Size 512KB
          • SHA256 b58f36033689a38b169b82f8d1669357b363f980a9eda0ca4cfc286ddcae0f6e
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          memory/2276-0-0x0000000000400000-0x0000000000496000-memory.dmp
          Download

          memory/2740-45-0x0000000003D80000-0x0000000003D81000-memory.dmp
          Download

          memory/2740-48-0x0000000003D80000-0x0000000003D81000-memory.dmp
          Download

          memory/2740-91-0x0000000003C20000-0x0000000003C30000-memory.dmp
          Download

          memory/2936-46-0x000000002F821000-0x000000002F822000-memory.dmp
          Download

          memory/2936-49-0x000000005FFF0000-0x0000000060000000-memory.dmp
          Download

          memory/2936-50-0x00000000719BD000-0x00000000719C8000-memory.dmp
          Download

          memory/2936-72-0x00000000719BD000-0x00000000719C8000-memory.dmp
          Download