Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    17-06-2024 21:04

General

  • Target

    2023081922.exe

  • Size

    1.7MB

  • MD5

    509a489d3f27595fbdb7702be4b8c7db

  • SHA1

    82cba1f457e78189386cbdc33502f208806420fb

  • SHA256

    a5e7ecf8cc93b634528604c72f9b9c754800120a422d1ce400b8aafb2692f6f1

  • SHA512

    8dd3342fef0737961396ad99f339e5e07f4ef87bae0c1e9ede628d2e7dab9944c55f654471cea2728923b4181a8cafd5a507b779b5aedf8c6711df1f3ff1f82c

  • SSDEEP

    12288:oFFXX423r9llnsa9awWlMNXJPqNqz+ggKj7eI5Z1kD:oHXZ3Nsa9aTqlga7eK1s

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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).

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023081922.exe
    "C:\Users\Admin\AppData\Local\Temp\2023081922.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:1832
    • 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\2023081922.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2736
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2496
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1832 -s 924
      2⤵
        PID:2472

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1832-0-0x000007FEF5B73000-0x000007FEF5B74000-memory.dmp

      Filesize

      4KB

    • memory/1832-1-0x00000000001D0000-0x00000000001DA000-memory.dmp

      Filesize

      40KB

    • memory/1832-2-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp

      Filesize

      9.9MB

    • memory/1832-3-0x0000000002120000-0x00000000021B4000-memory.dmp

      Filesize

      592KB

    • memory/1832-24-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp

      Filesize

      9.9MB

    • memory/1832-23-0x000007FEF5B73000-0x000007FEF5B74000-memory.dmp

      Filesize

      4KB

    • memory/2496-17-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2496-11-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2496-22-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2496-21-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2496-20-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2496-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2496-15-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2496-13-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2736-10-0x00000000027F0000-0x00000000027F8000-memory.dmp

      Filesize

      32KB

    • memory/2736-9-0x000000001B600000-0x000000001B8E2000-memory.dmp

      Filesize

      2.9MB

    • memory/2736-8-0x0000000002E20000-0x0000000002EA0000-memory.dmp

      Filesize

      512KB