Analysis

  • max time kernel
    26s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-09-2024 15:11

General

  • Target

    Trojan.MSIL.Taskun.AMA.exe

  • Size

    699KB

  • MD5

    ace395f2b26c4c2cacdac246367c2060

  • SHA1

    28a7e06e9c884a6bd19e2a72a707deddc926c8f7

  • SHA256

    c75134c43e97b75bca4ced11b721253c5774cb0a78184acdc5c55580aa07df85

  • SHA512

    38ca34874df309e5ccc849614b3800a0f487920ee3c2b6c076eb7b5717807eb510257ad07a321b455280ed12ecaa8d7ce47e847a8989d79a07d6b7aab24ce5be

  • SSDEEP

    12288:HwPjab8rnxCwK1BWng4WYEAH9Dd3Qc9cLWM9WiR6i6Qc7JYdViwt5XH:HwjabiCwwQng4tE2t2Kf+/OJ4iw5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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.

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe
    "C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2860
    • C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe
      "C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe"
      2⤵
        PID:2900
      • C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe
        "C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2620

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2620-23-0x00000000740C0000-0x00000000747AE000-memory.dmp

      Filesize

      6.9MB

    • memory/2620-22-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2620-17-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2620-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2620-9-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2620-13-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2620-24-0x00000000740C0000-0x00000000747AE000-memory.dmp

      Filesize

      6.9MB

    • memory/2620-7-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2620-19-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2620-28-0x00000000740C0000-0x00000000747AE000-memory.dmp

      Filesize

      6.9MB

    • memory/2620-11-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2748-2-0x00000000740C0000-0x00000000747AE000-memory.dmp

      Filesize

      6.9MB

    • memory/2748-0-0x00000000740CE000-0x00000000740CF000-memory.dmp

      Filesize

      4KB

    • memory/2748-1-0x0000000000D60000-0x0000000000E14000-memory.dmp

      Filesize

      720KB

    • memory/2748-6-0x0000000004DE0000-0x0000000004E62000-memory.dmp

      Filesize

      520KB

    • memory/2748-5-0x00000000740C0000-0x00000000747AE000-memory.dmp

      Filesize

      6.9MB

    • memory/2748-4-0x00000000740CE000-0x00000000740CF000-memory.dmp

      Filesize

      4KB

    • memory/2748-25-0x00000000740C0000-0x00000000747AE000-memory.dmp

      Filesize

      6.9MB

    • memory/2748-3-0x00000000005F0000-0x0000000000600000-memory.dmp

      Filesize

      64KB