Analysis

  • max time kernel
    80s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2022 07:58

General

  • Target

    PURCHASE ORDER # 12076038 & 12076020.exe

  • Size

    811KB

  • MD5

    c6de6c6bf618e381621a009e0677c80c

  • SHA1

    3d5a0adf745b6b93e3eb631eea3dd8c4f604acf8

  • SHA256

    b27f7a44bbe68d1ceb1d8d2b0a81fe4dcb9dc8047080e6a79aaca37b409cf240

  • SHA512

    f4c396637d3ca0675f53ab53698d2681be6783b88a40aea26eaa2fc134bb9101349075cb0e1c4e40614da11d4528c731f4906b9b1b8f34b47682b53924a7ada4

  • SSDEEP

    12288:6+XrA9MHA4jxpC6OTDCosnLcc+zfvSFXicHsWaT/T05AtGyiFr5cE8LHWc:KuLCbvx6YfvKsWL5U1NvL

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER # 12076038 & 12076020.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER # 12076038 & 12076020.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fveLLyABb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp57F3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1912
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
        PID:4508
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "{path}"
        2⤵
          PID:4784
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "{path}"
          2⤵
          • Accesses Microsoft Outlook profiles
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:4632

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp57F3.tmp

        Filesize

        1KB

        MD5

        7da2ffa4fb9d596c045c1a039d5cb698

        SHA1

        16c2bc1e0cf15ec181e81f62c92d6512cf9cd651

        SHA256

        f1bf7a439de3861a068a0aff87e3c3b5c9e9e5b130482d3688581d3352545e49

        SHA512

        928dd6dcecee39806b3aa43cdd035e034d8f9a9316093bfe1801e3d9dc63ae49953ee7807775e80fab66fbc029225bce75e0134bb9721f79addc69653e1761d4

      • memory/1728-135-0x0000000005400000-0x000000000549C000-memory.dmp

        Filesize

        624KB

      • memory/1728-134-0x0000000005360000-0x00000000053F2000-memory.dmp

        Filesize

        584KB

      • memory/1728-132-0x00000000009C0000-0x0000000000A90000-memory.dmp

        Filesize

        832KB

      • memory/1728-136-0x00000000052F0000-0x00000000052FA000-memory.dmp

        Filesize

        40KB

      • memory/1728-133-0x0000000005870000-0x0000000005E14000-memory.dmp

        Filesize

        5.6MB

      • memory/1912-137-0x0000000000000000-mapping.dmp

      • memory/4508-139-0x0000000000000000-mapping.dmp

      • memory/4632-141-0x0000000000000000-mapping.dmp

      • memory/4632-142-0x0000000000400000-0x000000000043C000-memory.dmp

        Filesize

        240KB

      • memory/4632-143-0x0000000005F10000-0x0000000005F76000-memory.dmp

        Filesize

        408KB

      • memory/4632-144-0x0000000006240000-0x0000000006290000-memory.dmp

        Filesize

        320KB

      • memory/4784-140-0x0000000000000000-mapping.dmp