Analysis

  • max time kernel
    138s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 11:23

General

  • Target

    ab4da6a6eb17001b2427284b5007cd62a6cf724ba1546a13420a40fb4ecde06d.exe

  • Size

    553KB

  • MD5

    0d9af17e7af59794c369d1c480a4dc1d

  • SHA1

    3d74c23fecabe7389aedd61b07f0ab23cf11ecdd

  • SHA256

    ab4da6a6eb17001b2427284b5007cd62a6cf724ba1546a13420a40fb4ecde06d

  • SHA512

    a55bec9c2e0e5ea0e64b8366c012db07a53b15facbb857786548ca9ef2631a6279d76f537c834df7ce0b7da3d87db6b65e936f112e767b9eaa12243a0cea9cc2

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    333link00win0303

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    333link00win0303

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • 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
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ab4da6a6eb17001b2427284b5007cd62a6cf724ba1546a13420a40fb4ecde06d.exe
    "C:\Users\Admin\AppData\Local\Temp\ab4da6a6eb17001b2427284b5007cd62a6cf724ba1546a13420a40fb4ecde06d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LyCgiShv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp32A9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4264
    • C:\Users\Admin\AppData\Local\Temp\ab4da6a6eb17001b2427284b5007cd62a6cf724ba1546a13420a40fb4ecde06d.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:452
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1388
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
      1⤵
        PID:2700

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\ab4da6a6eb17001b2427284b5007cd62a6cf724ba1546a13420a40fb4ecde06d.exe.log

        Filesize

        507B

        MD5

        d1a92622541a19a1840491deb2bb5e6d

        SHA1

        5b61bb7d8973644f736968ea416ec502a0ae9bce

        SHA256

        3b453ecc382d28d36f2c3c33634d332f856389fc3d709e40cbe9be8076da7a3c

        SHA512

        c451f1b9a3dd7c9c2acb1174c0029591f60193b99c9d2712701e182f94fdc89cf93053b402b1ffc26ff5876bec38df7e105c4fe975826acdf6bd215011bcfe41

      • C:\Users\Admin\AppData\Local\Temp\tmp32A9.tmp

        Filesize

        1KB

        MD5

        a8d0aca09c101e193360553134f257c8

        SHA1

        75c984461c6e16f791c7177ce6b3039ca12108d4

        SHA256

        4aab23addb31ddc0316b3ca8dc0e1ef9544b07a424c4d7fb24b153db30584ba2

        SHA512

        a1c880b90e06070fb60b28a75f0435cc56a5a04388ba04be03acb592adbbcfd14c1ed27606552441d1efe8dee6f3421711b025e77a0fbeb3e1de11a5ffbdd80f

      • memory/452-139-0x0000000005CB0000-0x0000000005D16000-memory.dmp

        Filesize

        408KB

      • memory/452-136-0x0000000000000000-mapping.dmp

      • memory/452-137-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

      • memory/452-140-0x0000000006890000-0x00000000068E0000-memory.dmp

        Filesize

        320KB

      • memory/452-142-0x0000000006E60000-0x0000000006E6A000-memory.dmp

        Filesize

        40KB

      • memory/1388-141-0x0000000000000000-mapping.dmp

      • memory/1472-133-0x0000000006460000-0x0000000006A04000-memory.dmp

        Filesize

        5.6MB

      • memory/1472-132-0x0000000005670000-0x000000000570C000-memory.dmp

        Filesize

        624KB

      • memory/1472-131-0x00000000055D0000-0x0000000005662000-memory.dmp

        Filesize

        584KB

      • memory/1472-130-0x0000000000C60000-0x0000000000CF0000-memory.dmp

        Filesize

        576KB

      • memory/4264-134-0x0000000000000000-mapping.dmp