Analysis

  • max time kernel
    145s
  • max time network
    122s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    21-04-2021 08:55

General

  • Target

    DHL Documents.pdf.exe

  • Size

    1.2MB

  • MD5

    6e724413959f7e17db4cb9d1da867469

  • SHA1

    88c09ac45b6445b75165f8563651b2373114fa9b

  • SHA256

    d13a456081643fd44d4c8ab57b32d2f74261ef858b576b58b17613e95b9fd471

  • SHA512

    9bb04e96831280e112b91b224ce0644be5a0068d4359d0c3223fa091fd1d24296762db9d7b30180aadff8c48c85e804a5b36693a30f23458c0bb7818db566311

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.zuarakltd.com
  • Port:
    587
  • Username:
    swift@zuarakltd.com
  • Password:
    max@#1235

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3768
    • 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\DHL Documents.pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3196
    • C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe"
      2⤵
        PID:2188
      • C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe"
        2⤵
          PID:2212
        • C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe
          "C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe"
          2⤵
            PID:2404
          • C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe
            "C:\Users\Admin\AppData\Local\Temp\DHL Documents.pdf.exe"
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2400

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Defense Evasion

        Virtualization/Sandbox Evasion

        2
        T1497

        Discovery

        Query Registry

        4
        T1012

        Virtualization/Sandbox Evasion

        2
        T1497

        System Information Discovery

        3
        T1082

        Peripheral Device Discovery

        1
        T1120

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2400-135-0x0000000000400000-0x000000000043C000-memory.dmp
          Filesize

          240KB

        • memory/2400-145-0x00000000055C0000-0x0000000005ABE000-memory.dmp
          Filesize

          5.0MB

        • memory/2400-136-0x00000000004374EE-mapping.dmp
        • memory/3196-144-0x0000000006882000-0x0000000006883000-memory.dmp
          Filesize

          4KB

        • memory/3196-143-0x0000000006880000-0x0000000006881000-memory.dmp
          Filesize

          4KB

        • memory/3196-169-0x0000000006883000-0x0000000006884000-memory.dmp
          Filesize

          4KB

        • memory/3196-168-0x000000007F310000-0x000000007F311000-memory.dmp
          Filesize

          4KB

        • memory/3196-167-0x00000000090C0000-0x00000000090C1000-memory.dmp
          Filesize

          4KB

        • memory/3196-166-0x0000000008BA0000-0x0000000008BA1000-memory.dmp
          Filesize

          4KB

        • memory/3196-161-0x0000000008B30000-0x0000000008B31000-memory.dmp
          Filesize

          4KB

        • memory/3196-125-0x0000000000000000-mapping.dmp
        • memory/3196-154-0x0000000008B50000-0x0000000008B83000-memory.dmp
          Filesize

          204KB

        • memory/3196-129-0x00000000042A0000-0x00000000042A1000-memory.dmp
          Filesize

          4KB

        • memory/3196-130-0x0000000006EC0000-0x0000000006EC1000-memory.dmp
          Filesize

          4KB

        • memory/3196-131-0x0000000006D00000-0x0000000006D01000-memory.dmp
          Filesize

          4KB

        • memory/3196-132-0x0000000006DA0000-0x0000000006DA1000-memory.dmp
          Filesize

          4KB

        • memory/3196-146-0x0000000007D90000-0x0000000007D91000-memory.dmp
          Filesize

          4KB

        • memory/3196-134-0x00000000076D0000-0x00000000076D1000-memory.dmp
          Filesize

          4KB

        • memory/3196-142-0x0000000007E60000-0x0000000007E61000-memory.dmp
          Filesize

          4KB

        • memory/3196-141-0x0000000007540000-0x0000000007541000-memory.dmp
          Filesize

          4KB

        • memory/3768-117-0x0000000005B10000-0x0000000005B11000-memory.dmp
          Filesize

          4KB

        • memory/3768-114-0x0000000000AA0000-0x0000000000AA1000-memory.dmp
          Filesize

          4KB

        • memory/3768-119-0x0000000002F90000-0x0000000002F91000-memory.dmp
          Filesize

          4KB

        • memory/3768-116-0x0000000005410000-0x0000000005411000-memory.dmp
          Filesize

          4KB

        • memory/3768-118-0x0000000005550000-0x0000000005551000-memory.dmp
          Filesize

          4KB

        • memory/3768-126-0x000000000CAF0000-0x000000000CAF1000-memory.dmp
          Filesize

          4KB

        • memory/3768-124-0x00000000086E0000-0x000000000871C000-memory.dmp
          Filesize

          240KB

        • memory/3768-123-0x0000000001410000-0x0000000001484000-memory.dmp
          Filesize

          464KB

        • memory/3768-122-0x0000000005610000-0x0000000005B0E000-memory.dmp
          Filesize

          5.0MB

        • memory/3768-121-0x0000000005870000-0x0000000005879000-memory.dmp
          Filesize

          36KB

        • memory/3768-120-0x00000000056D0000-0x00000000056D1000-memory.dmp
          Filesize

          4KB