Resubmissions

27-12-2022 14:34

221227-rxqn8afa54 10

27-12-2022 14:34

221227-rxfh9afa52 10

25-12-2022 11:46

221225-nxcwksee8w 10

Analysis

  • max time kernel
    88s
  • max time network
    80s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2022 11:46

General

  • Target

    f2335865a426507b47ecf5e37dcae9a3.exe

  • Size

    860KB

  • MD5

    f2335865a426507b47ecf5e37dcae9a3

  • SHA1

    7ccf56c9c48ffc911ac80ddf5240a42c99f83e33

  • SHA256

    57901cf97d0ab4c57f8b4927c75bd8761182b5ddb80d09bb917aab71ae68d7c6

  • SHA512

    67fd0fb2b872446957c570fb3418ee41363b8b0a6362819c36cef81454acadb2892e31dab2f7760a2f848c92b2b61b8ad5012a6781281f6cb009815c9424e208

  • SSDEEP

    24576:EsFdELpCybniAU6cH80ru/71mnMOrYH1ocO:FFdELpCybniAU6Gu/71mndM1jO

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f2335865a426507b47ecf5e37dcae9a3.exe
    "C:\Users\Admin\AppData\Local\Temp\f2335865a426507b47ecf5e37dcae9a3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Users\Admin\AppData\Local\Temp\f2335865a426507b47ecf5e37dcae9a3.exe
      "C:\Users\Admin\AppData\Local\Temp\f2335865a426507b47ecf5e37dcae9a3.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1616

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1616-64-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1616-63-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1616-70-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1616-68-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1616-61-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1616-65-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1616-60-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1652-55-0x00000000758C1000-0x00000000758C3000-memory.dmp

    Filesize

    8KB

  • memory/1652-54-0x0000000000D20000-0x0000000000DFE000-memory.dmp

    Filesize

    888KB

  • memory/1652-59-0x0000000000AA0000-0x0000000000ACE000-memory.dmp

    Filesize

    184KB

  • memory/1652-58-0x00000000051C0000-0x0000000005228000-memory.dmp

    Filesize

    416KB

  • memory/1652-57-0x0000000000490000-0x000000000049A000-memory.dmp

    Filesize

    40KB

  • memory/1652-56-0x0000000000450000-0x0000000000460000-memory.dmp

    Filesize

    64KB