Analysis

  • max time kernel
    85s
  • max time network
    59s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 14:53

General

  • Target

    INV & Packing List.exe

  • Size

    807KB

  • MD5

    40264f53f0f83bfd21df75e22db2b0ea

  • SHA1

    93171e1bd1c33212724b3b3e5238f0c83531fc7e

  • SHA256

    caef9e906b0768d4134a8fc2a9523554b23bb9980668c299106d1ace32cbbaef

  • SHA512

    7f7f85a39e3bce3f3c0465c97a3367f2d2860bfeb67d3f7a17f8342c7742d1280681fdefda5d1f418f64da22b7e6877e677134d8c36628389c06f4465fe9bfd6

  • SSDEEP

    24576:NU676CSkFg/IyXt5TKhwlZzE9H/0XPG5X:KlkoXfxZsf6Q

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
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INV & Packing List.exe
    "C:\Users\Admin\AppData\Local\Temp\INV & Packing List.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1324
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RWbWWa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAB0F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:672
    • C:\Users\Admin\AppData\Local\Temp\INV & Packing List.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:268

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAB0F.tmp

    Filesize

    1KB

    MD5

    8a12d8faa2c632a3286eab16aed4eb7d

    SHA1

    5df435cb98af178e1a9c6c40c84aed2b71e95742

    SHA256

    950878f78629948f694ed2c110c60918bdaf1642fe53cd3830a540d3897cbf9b

    SHA512

    809400a6b35f69b589f41c37f62aa9bdf6aec0cb7ba002a3141b80e96a46d72d77b0c698036098b178b2b7e08ddbf3701bff3147eb31ed0ae9d9f8805eaf939c

  • memory/268-64-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/268-67-0x0000000000437B9E-mapping.dmp

  • memory/268-71-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/268-69-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/268-66-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/268-65-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/268-61-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/268-62-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/672-59-0x0000000000000000-mapping.dmp

  • memory/1324-54-0x0000000000EB0000-0x0000000000F80000-memory.dmp

    Filesize

    832KB

  • memory/1324-55-0x00000000752B1000-0x00000000752B3000-memory.dmp

    Filesize

    8KB

  • memory/1324-56-0x00000000007B0000-0x00000000007C2000-memory.dmp

    Filesize

    72KB

  • memory/1324-58-0x0000000000CB0000-0x0000000000CEC000-memory.dmp

    Filesize

    240KB

  • memory/1324-57-0x00000000057C0000-0x0000000005846000-memory.dmp

    Filesize

    536KB