Analysis

  • max time kernel
    91s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 02:07

General

  • Target

    PRODUCT LISTS_____PDF_____0011.exe

  • Size

    499KB

  • MD5

    bc9fd8f4ea37c6b294ff3a7b4c4f66ce

  • SHA1

    48c7c0476a8f55c73be4ff8a2e1938f65514a5da

  • SHA256

    145d6a68dc07f5ed56f660761fa8412600d1c553bfcf67b321db725482ff991c

  • SHA512

    632e81ce8118a5a52b5008f2cf6dd91896bb8742591ae5a5e7470ea0c72eab06054543e977476bcf5f378f27fe3af1915100b2d34c065e21c53b077308ce9196

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Ijeomam288

Signatures

  • AgentTesla

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

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • AgentTesla Payload 6 IoCs
  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PRODUCT LISTS_____PDF_____0011.exe
    "C:\Users\Admin\AppData\Local\Temp\PRODUCT LISTS_____PDF_____0011.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:968
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RNSGPnYt" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF75A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1428
    • C:\Users\Admin\AppData\Local\Temp\PRODUCT LISTS_____PDF_____0011.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:1364
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1872

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpF75A.tmp
      Filesize

      1KB

      MD5

      3e1276e6b0cec7b97ff41607370a632c

      SHA1

      69e347ce6f899028a5d6a0f263a8e1145ab3da69

      SHA256

      094a07855a616f4eaaffb0aecf9ce4afc7ad82f9efcb48360e6a0b0296cba48b

      SHA512

      ca07fa210d7b1ebd0d0069b87052d5c951787a7b3cbc4e7b7c99b420a804bed94ec8d07125dac4d57044a1330c61cd1a26fa1259c1a8b2b230c072cf89491910

    • memory/968-55-0x0000000002400000-0x0000000002462000-memory.dmp
      Filesize

      392KB

    • memory/968-56-0x00000000003E0000-0x00000000003E8000-memory.dmp
      Filesize

      32KB

    • memory/968-57-0x0000000004AA0000-0x0000000004AF8000-memory.dmp
      Filesize

      352KB

    • memory/968-54-0x0000000000990000-0x0000000000A16000-memory.dmp
      Filesize

      536KB

    • memory/1364-68-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1364-60-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1364-61-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1364-63-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1364-64-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1364-65-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1364-66-0x000000000044C5DE-mapping.dmp
    • memory/1364-70-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1364-71-0x0000000075B61000-0x0000000075B63000-memory.dmp
      Filesize

      8KB

    • memory/1428-58-0x0000000000000000-mapping.dmp
    • memory/1872-72-0x0000000000000000-mapping.dmp