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Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13/12/2024, 01:07

General

  • Target

    bf195309d315f72cba80c7edd344a27d4950a7e54d883c4b9546bb69b870107c.exe

  • Size

    637KB

  • MD5

    5888e0f00806e549fa181e11614b29b6

  • SHA1

    c71c74911cb2d2ab8a535be7697c7f02336d67d1

  • SHA256

    bf195309d315f72cba80c7edd344a27d4950a7e54d883c4b9546bb69b870107c

  • SHA512

    287a004cd34e505705970bc161c9eee67ebe6e1213708c3b64cb6c95f610e599f6b76b4aa1b6d5bbeaf834410cfebc0d208395c8027ca732c37c24a5970e2263

  • SSDEEP

    12288:oAn15OllT6k2neIurJxvBWN8LZwOItwFgaDEk/J0Z2s+5eCtqyt/RxyRbi0x74:vIiDudxv4NEZHjdaZ2s+RPpxyRbi0t4

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7238823286:AAHUVsvFbx3L7yfxJB-f5BMs6WFzLbndzzw/

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Agenttesla family
  • UAC bypass 3 TTPs 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 whether UAC is enabled 1 TTPs 2 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf195309d315f72cba80c7edd344a27d4950a7e54d883c4b9546bb69b870107c.exe
    "C:\Users\Admin\AppData\Local\Temp\bf195309d315f72cba80c7edd344a27d4950a7e54d883c4b9546bb69b870107c.exe"
    1⤵
    • UAC bypass
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2988
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\bf195309d315f72cba80c7edd344a27d4950a7e54d883c4b9546bb69b870107c.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2804
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
      2⤵
        PID:2868
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2744
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
        2⤵
          PID:2928

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/2744-29-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2744-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2744-27-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2744-28-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2804-8-0x000000001B6A0000-0x000000001B982000-memory.dmp

        Filesize

        2.9MB

      • memory/2804-9-0x0000000002790000-0x0000000002798000-memory.dmp

        Filesize

        32KB

      • memory/2868-10-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2868-14-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2868-12-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2868-16-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2988-0-0x000007FEF5903000-0x000007FEF5904000-memory.dmp

        Filesize

        4KB

      • memory/2988-3-0x00000000006C0000-0x0000000000754000-memory.dmp

        Filesize

        592KB

      • memory/2988-2-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2988-1-0x0000000001160000-0x0000000001174000-memory.dmp

        Filesize

        80KB

      • memory/2988-30-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

        Filesize

        9.9MB