Analysis

  • max time kernel
    122s
  • max time network
    170s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    27-07-2021 20:27

General

  • Target

    DHL-AW1258901FE2021_pdf.exe

  • Size

    797KB

  • MD5

    8ae76778cf4bd4ea09d7c6fe8e5ceb7c

  • SHA1

    c81411a8d7abcd68fcec07a67dd33a520767f8e3

  • SHA256

    4d50e241422bc31d14cac7c4fafc411b53e165e27e6f70f33ce0c4266b817157

  • SHA512

    05a76a99b07c2402b87f0f1424161ed24070eb88598f2ab3943ec6ace1febb2e734290e4e49137748a5e6c35c1808f4e35f415f546d6a89a347ff0afec4bc000

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtpout.secureserver.net
  • Port:
    587
  • Username:
    sales1@ashtavinayaka.com
  • Password:
    123456789

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL-AW1258901FE2021_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL-AW1258901FE2021_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tshiAyXHtrWPz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7DA8.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:380
    • C:\Users\Admin\AppData\Local\Temp\DHL-AW1258901FE2021_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL-AW1258901FE2021_pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:876
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 516
        3⤵
          PID:1668

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp7DA8.tmp
      MD5

      d3d1f1763662ee2841bb72ecefc8b169

      SHA1

      4d68d0a5588d5ae28951e595d93aba9e8cebb92d

      SHA256

      3b166ce6df7699244953346939863b890d9a344858ac74b38d05c93fe31f7fe5

      SHA512

      0e8c226b723b0069b4edb40e0d78137e87924c4864dc0a704d6f097f2b78b131fbbf8418af74914ebfd856ded2d65886f910966ad1eed3e0d31259b4e17ddd92

    • memory/380-62-0x0000000000000000-mapping.dmp
    • memory/876-65-0x00000000004374EE-mapping.dmp
    • memory/876-64-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/876-67-0x0000000000E40000-0x0000000000E41000-memory.dmp
      Filesize

      4KB

    • memory/1668-68-0x0000000000000000-mapping.dmp
    • memory/1668-70-0x0000000000620000-0x0000000000621000-memory.dmp
      Filesize

      4KB

    • memory/2024-59-0x0000000076A81000-0x0000000076A83000-memory.dmp
      Filesize

      8KB

    • memory/2024-60-0x00000000002A0000-0x00000000002A1000-memory.dmp
      Filesize

      4KB

    • memory/2024-61-0x00000000002A1000-0x00000000002A2000-memory.dmp
      Filesize

      4KB