Overview

overview

10

Static

static

1

ac7744734a...3c.exe

windows7-x64

10

ac7744734a...3c.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/07/2024, 05:11

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General

  • Target
    ac7744734ae9ae7c4c303b6078f8ec6b1ad2557372a5efe39bd0a3743a60d13c.exe
  • Size 366KB
  • Sample240726-fvecma1fmg
  • SHA256 ac7744734ae9ae7c4c303b6078f8ec6b1ad2557372a5efe39bd0a3743a60d13c
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
mimikatzbootkitdiscoverypersistencespywarestealer

Malware Config

Signatures

  • Mimikatz

    mimikatz is an open source tool to dump credentials on Windows.

    mimikatz
  • mimikatz is an open source tool to dump credentials on Windows 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Drops file in Program Files directory 55 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac7744734ae9ae7c4c303b6078f8ec6b1ad2557372a5efe39bd0a3743a60d13c.exe
    "C:\Users\Admin\AppData\Local\Temp\ac7744734ae9ae7c4c303b6078f8ec6b1ad2557372a5efe39bd0a3743a60d13c.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3340
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Windows\perfc.dat,#1
      2⤵
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4928
      • C:\Windows\SysWOW64\cmd.exe
        /c schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 06:14
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4984
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Create /SC once /TN "" /TR "C:\Windows\system32\shutdown.exe /r /f" /ST 06:14
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3564
      • C:\Users\Admin\AppData\Local\Temp\C64D.tmp
        "C:\Users\Admin\AppData\Local\Temp\C64D.tmp" \\.\pipe\{7CF50978-32B1-4822-AECF-444BF079F7E4}
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4256

Network

        MITRE ATT&CK Enterprise v15

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        Downloads

        C64D.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\C64D.tmp
        • Size 55KB
        • SHA256 02ef73bd2458627ed7b397ec26ee2de2e92c71a0e7588f78734761d8edbdcd9f
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        perfc.dat
        • Path C:\Windows\perfc.dat
        • Size 353KB
        • SHA256 027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/3340-0-0x0000000000150000-0x00000000001AF000-memory.dmp
        Download

        memory/3340-2-0x0000000000150000-0x00000000001AF000-memory.dmp
        Download

        memory/4928-6-0x0000000000CD0000-0x0000000000D2E000-memory.dmp
        Download

        memory/4928-13-0x0000000000CD0000-0x0000000000D2E000-memory.dmp
        Download

        memory/4928-15-0x0000000000CD0000-0x0000000000D2E000-memory.dmp
        Download

        memory/4928-14-0x0000000000CD0000-0x0000000000D2E000-memory.dmp
        Download

        memory/4928-27-0x0000000000CD0000-0x0000000000D2E000-memory.dmp
        Download