Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    21-05-2024 01:31

General

  • Target

    PURCHASE ORDER.exe

  • Size

    828KB

  • MD5

    8af5abb19bc5fcd7d8e7c7c930707e68

  • SHA1

    bc9724ebbdfc9f248a427c0bbe119a5d144c4fa1

  • SHA256

    25192b6de0b0ec0c8647deee54f87f54c6c122496a601cffbaa9fad85168af62

  • SHA512

    7cc597bb80e502eebd872f25f218f63b88ade93c81a5eca97bc960de04ade2e218c7cdb2eaf1fff7b08005cd4ae3846761de62def4cb7d8d3ac816b32c66582e

  • SSDEEP

    12288:OIQWET/mr9K+22BEEzFatnHbcmWSK86jENTkV0E+YfVZScyqg08kfl2aWUnTPea8:QWtb3BEVHC86YTkVVOkfl/beaooN5v8

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:348
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2620
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gmTKQwj.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2720
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gmTKQwj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D10.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2648
    • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe
      "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe"
      2⤵
        PID:2756
      • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe
        "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe"
        2⤵
          PID:2548
        • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe
          "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER.exe"
          2⤵
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2492

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp3D10.tmp

        Filesize

        1KB

        MD5

        1dae12bfad06913be6e2caf46500b1f5

        SHA1

        f5cfc54fd3a198bb0bcf5039fd0e320b255964d1

        SHA256

        b7ab190035155516f28b622f3c6fd4e5e16cf3b7224e9df7b301daa12d667fa1

        SHA512

        e9d25b6c29e75619b9e251b973cdc9d9f199e6cf22e0501d8669b0be26fbfc8312eb2ad07d2d6e1b5b149763205ce64bdfc681c61b47d032941c6a8ae0c2fb95

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

        Filesize

        7KB

        MD5

        ad7d8e9d3ce978ca531000b494ccdf3d

        SHA1

        be788065f84238efe688f3c028fbddfda5bff906

        SHA256

        51c0086a92772885099f71b1ae5f193fefea90087cb61ab61573fb7ec62e56e1

        SHA512

        ea17fc011784e97e731562845f1090ac5cf87ae820cc5c92e9858ae9f3463b412165c11b7818ef6751f7daf1eb08e14f8dd3dc95fcdaab23fe75beede800ea54

      • memory/348-4-0x00000000003B0000-0x00000000003BC000-memory.dmp

        Filesize

        48KB

      • memory/348-32-0x0000000074A80000-0x000000007516E000-memory.dmp

        Filesize

        6.9MB

      • memory/348-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

        Filesize

        4KB

      • memory/348-5-0x00000000002F0000-0x0000000000300000-memory.dmp

        Filesize

        64KB

      • memory/348-6-0x00000000050A0000-0x0000000005122000-memory.dmp

        Filesize

        520KB

      • memory/348-2-0x0000000074A80000-0x000000007516E000-memory.dmp

        Filesize

        6.9MB

      • memory/348-1-0x00000000001A0000-0x0000000000274000-memory.dmp

        Filesize

        848KB

      • memory/348-3-0x0000000000900000-0x0000000000922000-memory.dmp

        Filesize

        136KB

      • memory/2492-19-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2492-29-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2492-31-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2492-28-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2492-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2492-23-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2492-21-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2492-25-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB