Analysis

  • max time kernel
    125s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    22-01-2021 07:07

General

  • Target

    RFQ #6553928_PDF.exe

  • Size

    1003KB

  • MD5

    126a06711f90b3bb00d5cdf657bbd381

  • SHA1

    50c06ee54498c3a960baf9aca1f62909edf1981c

  • SHA256

    20795651735a3b9de9a7cd1ec01ea78c8acd43c9cb67dda8628cf1559bdcba1c

  • SHA512

    ccf017de3b41b4b7372651aeaf73f0ca25fdf7ab6075634d5cd1600801a3fe438ce3c86ceccb5de7a31f626286dd75ef02dbc9ec3f0019541eb980a76d8191fc

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1513271204:AAFn4hPg2fp2zgo9ieA28FrdaCkpwxApdbA/sendDocument

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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ #6553928_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ #6553928_PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4720
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uZAqSbOWQIwH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB28D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3096
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
        PID:4384
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "{path}"
        2⤵
          PID:4084
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "{path}"
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4360

      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\tmpB28D.tmp
        MD5

        5a99a379ae99223c95197eef6b27b507

        SHA1

        e0c621bbdf919cf66ed58ac2198a1d71686c4700

        SHA256

        29a81c12a3627f5b647574215b318c95931c8f3f103078cf2ff8bac81bda9241

        SHA512

        b647dd19d2540e46e3465af0c9e26a2ef199c0c601e9fde759e3f6717d79557eacae00c410ac3ca65595039243f6ace73106a9873a657c22a8879e48edead601

      • memory/3096-12-0x0000000000000000-mapping.dmp
      • memory/4360-26-0x0000000003021000-0x0000000003022000-memory.dmp
        Filesize

        4KB

      • memory/4360-23-0x00000000062A0000-0x00000000062A1000-memory.dmp
        Filesize

        4KB

      • memory/4360-22-0x0000000005BE0000-0x0000000005BE1000-memory.dmp
        Filesize

        4KB

      • memory/4360-21-0x0000000003020000-0x0000000003021000-memory.dmp
        Filesize

        4KB

      • memory/4360-16-0x0000000073530000-0x0000000073C1E000-memory.dmp
        Filesize

        6MB

      • memory/4360-15-0x000000000043777E-mapping.dmp
      • memory/4360-14-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/4720-7-0x0000000004A80000-0x0000000004A81000-memory.dmp
        Filesize

        4KB

      • memory/4720-11-0x0000000007070000-0x0000000007071000-memory.dmp
        Filesize

        4KB

      • memory/4720-10-0x0000000006F20000-0x0000000006FC6000-memory.dmp
        Filesize

        664KB

      • memory/4720-9-0x0000000004D20000-0x0000000004D2E000-memory.dmp
        Filesize

        56KB

      • memory/4720-8-0x0000000004AB0000-0x0000000004AB1000-memory.dmp
        Filesize

        4KB

      • memory/4720-2-0x0000000073530000-0x0000000073C1E000-memory.dmp
        Filesize

        6MB

      • memory/4720-6-0x0000000004B00000-0x0000000004B01000-memory.dmp
        Filesize

        4KB

      • memory/4720-5-0x0000000005000000-0x0000000005001000-memory.dmp
        Filesize

        4KB

      • memory/4720-3-0x0000000000130000-0x0000000000131000-memory.dmp
        Filesize

        4KB