Analysis

  • max time kernel
    140s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/12/2022, 14:06

General

  • Target

    BL and PARKING LIST.exe

  • Size

    1.1MB

  • MD5

    602fdbbcebcc9a77aa9fce2015cffb2d

  • SHA1

    15d5e49524d90eb5a6433ce2624b91545dad77c5

  • SHA256

    f935f77d9642d77c90dd45642c1cca39d25f6eec62867ee8c2759efe51207ddc

  • SHA512

    3f7c957c702ca7a4deab65870d48452422ff138d4a9beb4ce027830550cbec35e065f573e0a2da7106601dec6ad76358080f5de9c81473dc63608ad2fa4c76be

  • SSDEEP

    24576:QkAVm8JzP0VRcBtSEUK1dLwaZHkmVFRwiWxrlTAD7EjzrlKx:SVmO4skQXLDZHkmVTellTAKz5K

Malware Config

Extracted

Family

agenttesla

Credentials

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
  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BL and PARKING LIST.exe
    "C:\Users\Admin\AppData\Local\Temp\BL and PARKING LIST.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4752
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cuzuoHcNSQodLU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFC18.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:5012
    • C:\Users\Admin\AppData\Local\Temp\BL and PARKING LIST.exe
      "{path}"
      2⤵
        PID:1096
      • C:\Users\Admin\AppData\Local\Temp\BL and PARKING LIST.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:3100

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\BL and PARKING LIST.exe.log

            Filesize

            1KB

            MD5

            84e77a587d94307c0ac1357eb4d3d46f

            SHA1

            83cc900f9401f43d181207d64c5adba7a85edc1e

            SHA256

            e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

            SHA512

            aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

          • C:\Users\Admin\AppData\Local\Temp\tmpFC18.tmp

            Filesize

            1KB

            MD5

            47d49cba6ab651e9f2278b60547245d4

            SHA1

            6646851727dc72ad843345f7b1683515b5d5c7cc

            SHA256

            89bccf233884639401341bfcdaa23b0782b041bf9bd1791a988e63d6925bd798

            SHA512

            6f3e3cad5f8c3070e3b87c7ea1cf492f8ed73129dd785ccf5892a5f61d466ae5568ce08d40829b222a6f3cda918faf6efefcf17678c15e9b69206e17ae54b88c

          • memory/3100-141-0x0000000000400000-0x000000000043C000-memory.dmp

            Filesize

            240KB

          • memory/3100-143-0x00000000063E0000-0x0000000006446000-memory.dmp

            Filesize

            408KB

          • memory/3100-144-0x0000000006E90000-0x0000000006EE0000-memory.dmp

            Filesize

            320KB

          • memory/4752-136-0x00000000055A0000-0x00000000055AA000-memory.dmp

            Filesize

            40KB

          • memory/4752-135-0x0000000005670000-0x000000000570C000-memory.dmp

            Filesize

            624KB

          • memory/4752-134-0x00000000055D0000-0x0000000005662000-memory.dmp

            Filesize

            584KB

          • memory/4752-132-0x0000000000AD0000-0x0000000000BFA000-memory.dmp

            Filesize

            1.2MB

          • memory/4752-133-0x0000000005B80000-0x0000000006124000-memory.dmp

            Filesize

            5.6MB