Analysis

  • max time kernel
    91s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-12-2022 02:54

General

  • Target

    PAYMENT ADVISE_0004.exe

  • Size

    841KB

  • MD5

    c57e9585bbe179e45833e8b896c73e29

  • SHA1

    1c0aa52a527f919f0e575e00dcb7023c553f9d5c

  • SHA256

    0a87339cba74896d097ec10a18315d66dc3f98121ba968ff571a29e241646b60

  • SHA512

    15b2b749010b6da998063d24aa75a38b0fdda79c523f99b2ff1cc074f64d6551b5854a09adf44df434e4ede55e7562535650e54445bb94096620e10360575263

  • SSDEEP

    12288:F/hXvkIY0GZa/4y1v8Vdv+UF9Co2dLi78dkLgxlkg586aWHffauQOQWM6x5BbWIb:8B03giZUFZ2dLg/gxlB5O8f4b

Malware Config

Extracted

Family

agenttesla

C2

https://discord.com/api/webhooks/1046885137620668476/tqKDZZWFXo6nvWfx10p4wfxf1QI6_dSmYl-LLQGbb4vhhmp9HT4sLvTVg0kj1SgRTQGZ

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 9 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe
    "C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4444
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\dpVDkY.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4704
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dpVDkY" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC93B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1440
    • C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe
      "C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe"
      2⤵
        PID:1464
      • C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe
        "C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe"
        2⤵
          PID:2804
        • C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe
          "C:\Users\Admin\AppData\Local\Temp\PAYMENT ADVISE_0004.exe"
          2⤵
          • Accesses Microsoft Outlook profiles
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: RenamesItself
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:732

      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

      1
      T1112

      Credential Access

      Credentials in Files

      3
      T1081

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      2
      T1082

      Collection

      Data from Local System

      3
      T1005

      Email Collection

      1
      T1114

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpC93B.tmp
        Filesize

        1KB

        MD5

        818c98d8355b0ac1c8813412e89511c7

        SHA1

        3af13c69c5d83122e9e2f235d48a436fb6de2d05

        SHA256

        dc847330239217091d3542e596a9adf68a5b007d0db75296aaf3b4f947f7f6b9

        SHA512

        179ebe08a75e5ae97a9628ac63caaacf8cfd2ceba30f454f9282e45c2df16e17148d1a022401c63336167e4fb0636e6445b78fb28287063227d9075a6e85eda2

      • memory/732-144-0x0000000000000000-mapping.dmp
      • memory/732-157-0x00000000067A0000-0x00000000067F0000-memory.dmp
        Filesize

        320KB

      • memory/732-145-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1440-138-0x0000000000000000-mapping.dmp
      • memory/1464-141-0x0000000000000000-mapping.dmp
      • memory/2804-143-0x0000000000000000-mapping.dmp
      • memory/4444-133-0x0000000007B30000-0x00000000080D4000-memory.dmp
        Filesize

        5.6MB

      • memory/4444-134-0x0000000007660000-0x00000000076F2000-memory.dmp
        Filesize

        584KB

      • memory/4444-135-0x0000000007630000-0x000000000763A000-memory.dmp
        Filesize

        40KB

      • memory/4444-136-0x0000000009FE0000-0x000000000A07C000-memory.dmp
        Filesize

        624KB

      • memory/4444-132-0x00000000006D0000-0x00000000007A8000-memory.dmp
        Filesize

        864KB

      • memory/4704-146-0x0000000004D50000-0x0000000004D72000-memory.dmp
        Filesize

        136KB

      • memory/4704-153-0x00000000077F0000-0x0000000007E6A000-memory.dmp
        Filesize

        6.5MB

      • memory/4704-139-0x0000000000D60000-0x0000000000D96000-memory.dmp
        Filesize

        216KB

      • memory/4704-147-0x0000000004FF0000-0x0000000005056000-memory.dmp
        Filesize

        408KB

      • memory/4704-148-0x00000000058C0000-0x0000000005926000-memory.dmp
        Filesize

        408KB

      • memory/4704-149-0x0000000005F20000-0x0000000005F3E000-memory.dmp
        Filesize

        120KB

      • memory/4704-150-0x0000000006480000-0x00000000064B2000-memory.dmp
        Filesize

        200KB

      • memory/4704-151-0x0000000071520000-0x000000007156C000-memory.dmp
        Filesize

        304KB

      • memory/4704-152-0x0000000006460000-0x000000000647E000-memory.dmp
        Filesize

        120KB

      • memory/4704-142-0x00000000050A0000-0x00000000056C8000-memory.dmp
        Filesize

        6.2MB

      • memory/4704-154-0x00000000071B0000-0x00000000071CA000-memory.dmp
        Filesize

        104KB

      • memory/4704-155-0x0000000007220000-0x000000000722A000-memory.dmp
        Filesize

        40KB

      • memory/4704-156-0x0000000007430000-0x00000000074C6000-memory.dmp
        Filesize

        600KB

      • memory/4704-137-0x0000000000000000-mapping.dmp
      • memory/4704-158-0x00000000073E0000-0x00000000073EE000-memory.dmp
        Filesize

        56KB

      • memory/4704-159-0x0000000007570000-0x000000000758A000-memory.dmp
        Filesize

        104KB

      • memory/4704-160-0x0000000007550000-0x0000000007558000-memory.dmp
        Filesize

        32KB