Resubmissions

05-09-2023 01:34

230905-by5lrsch46 10

Analysis

  • max time kernel
    120s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 01:20

General

  • Target

    e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea.exe

  • Size

    616KB

  • MD5

    1caeba20d73f6665029d6bc0fa853312

  • SHA1

    849a79c6dfe1483875e7ca1780d9718c11102321

  • SHA256

    e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea

  • SHA512

    7272c07c70f7a3b542a1a2e022184c161e7f72f3f27e5c52d7e847bc94bca1a3f34b062e80510bae1a847e02d54bc1214a00470d510eabeafd31e58849f6cdd5

  • SSDEEP

    12288:KE9/X2MaoJKyKNt91+HMXvEYghrdyWocb75y5hxGJgcz/b/CEsPRWw3KV0:P/X2Kf0T+ttb2o7UbxYrzLCtWgKV0

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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
  • 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\e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea.exe
    "C:\Users\Admin\AppData\Local\Temp\e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3040
    • C:\Users\Admin\AppData\Local\Temp\e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea.exe
      "C:\Users\Admin\AppData\Local\Temp\e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea.exe"
      2⤵
        PID:2492
      • C:\Users\Admin\AppData\Local\Temp\e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea.exe
        "C:\Users\Admin\AppData\Local\Temp\e65128450ff1d82705658fe9599d02d0f3b3500542c156eff284e64d80a24dea.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:2376

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Credential Access

    Unsecured Credentials

    4
    T1552

    Credentials In Files

    3
    T1552.001

    Credentials in Registry

    1
    T1552.002

    Collection

    Data from Local System

    4
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2376-13-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2376-11-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2376-21-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2376-19-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2376-23-0x00000000742A0000-0x000000007498E000-memory.dmp
      Filesize

      6.9MB

    • memory/2376-22-0x00000000742A0000-0x000000007498E000-memory.dmp
      Filesize

      6.9MB

    • memory/2376-9-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2376-7-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2376-17-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2376-25-0x00000000742A0000-0x000000007498E000-memory.dmp
      Filesize

      6.9MB

    • memory/2376-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/3040-2-0x00000000742A0000-0x000000007498E000-memory.dmp
      Filesize

      6.9MB

    • memory/3040-0-0x00000000742AE000-0x00000000742AF000-memory.dmp
      Filesize

      4KB

    • memory/3040-1-0x0000000000210000-0x00000000002B0000-memory.dmp
      Filesize

      640KB

    • memory/3040-6-0x0000000005660000-0x00000000056DC000-memory.dmp
      Filesize

      496KB

    • memory/3040-24-0x00000000742A0000-0x000000007498E000-memory.dmp
      Filesize

      6.9MB

    • memory/3040-5-0x0000000000730000-0x000000000073A000-memory.dmp
      Filesize

      40KB

    • memory/3040-4-0x00000000742A0000-0x000000007498E000-memory.dmp
      Filesize

      6.9MB

    • memory/3040-3-0x0000000000700000-0x000000000071A000-memory.dmp
      Filesize

      104KB