Analysis

  • max time kernel
    92s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/09/2024, 12:36

General

  • Target
    Samsung PO 20240920.exe
  • Size 792KB
  • Sample240923-psxwmazeqa
  • SHA256 458e5bd8e3508c15449bfd4c9931a59cd2a6a95ed9e6bb5b0090aa6641a29c77
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials

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 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • 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 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Samsung PO 20240920.exe
    "C:\Users\Admin\AppData\Local\Temp\Samsung PO 20240920.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1644
    • 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\Samsung PO 20240920.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2264
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YexeAWuPXGyhPE.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:784
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YexeAWuPXGyhPE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA0E3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:452
    • C:\Users\Admin\AppData\Local\Temp\Samsung PO 20240920.exe
      "C:\Users\Admin\AppData\Local\Temp\Samsung PO 20240920.exe"
      2⤵
        PID:4840
      • C:\Users\Admin\AppData\Local\Temp\Samsung PO 20240920.exe
        "C:\Users\Admin\AppData\Local\Temp\Samsung PO 20240920.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3168

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          powershell.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
          • Size 2KB
          • SHA256 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
          • MD5 SHA1 SHA512

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 18KB
          • SHA256 0862f26f8706c921e08259cae19241607033bc2a8a47638eccfc072611cbb607
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_jtkld2tk.pmn.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jtkld2tk.pmn.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          tmpA0E3.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\tmpA0E3.tmp
          • Size 1KB
          • SHA256 4f743780b6ebe5c7b23efd1dc6c78e1bc0afcd3a1502b9939c9ccc4449ba569d
          • MD5 SHA1 SHA512

          memory/784-48-0x0000000005C00000-0x0000000005C1E000-memory.dmp

          memory/784-62-0x00000000717A0000-0x00000000717EC000-memory.dmp

          memory/784-22-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/784-21-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/784-77-0x0000000007140000-0x0000000007151000-memory.dmp

          memory/784-78-0x0000000007170000-0x000000000717E000-memory.dmp

          memory/784-84-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/1644-5-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/1644-10-0x00000000091A0000-0x000000000923C000-memory.dmp

          memory/1644-9-0x0000000006AF0000-0x0000000006B72000-memory.dmp

          memory/1644-8-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/1644-7-0x00000000750DE000-0x00000000750DF000-memory.dmp

          memory/1644-6-0x0000000005420000-0x0000000005432000-memory.dmp

          memory/1644-4-0x0000000005310000-0x000000000531A000-memory.dmp

          memory/1644-3-0x0000000005180000-0x0000000005212000-memory.dmp

          memory/1644-0-0x00000000750DE000-0x00000000750DF000-memory.dmp

          memory/1644-2-0x0000000005730000-0x0000000005CD4000-memory.dmp

          memory/1644-1-0x00000000006E0000-0x00000000007AC000-memory.dmp

          memory/1644-38-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/2264-73-0x0000000007F60000-0x00000000085DA000-memory.dmp

          memory/2264-74-0x0000000007910000-0x000000000792A000-memory.dmp

          memory/2264-15-0x0000000002CF0000-0x0000000002D26000-memory.dmp

          memory/2264-25-0x0000000005F50000-0x0000000005FB6000-memory.dmp

          memory/2264-49-0x0000000006B40000-0x0000000006B8C000-memory.dmp

          memory/2264-61-0x0000000006BF0000-0x0000000006C0E000-memory.dmp

          memory/2264-51-0x00000000717A0000-0x00000000717EC000-memory.dmp

          memory/2264-50-0x00000000075B0000-0x00000000075E2000-memory.dmp

          memory/2264-72-0x00000000077F0000-0x0000000007893000-memory.dmp

          memory/2264-24-0x00000000058B0000-0x0000000005916000-memory.dmp

          memory/2264-23-0x0000000005810000-0x0000000005832000-memory.dmp

          memory/2264-33-0x0000000005FC0000-0x0000000006314000-memory.dmp

          memory/2264-75-0x0000000007980000-0x000000000798A000-memory.dmp

          memory/2264-76-0x0000000007B90000-0x0000000007C26000-memory.dmp

          memory/2264-19-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/2264-18-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/2264-79-0x0000000007B50000-0x0000000007B64000-memory.dmp

          memory/2264-80-0x0000000007C50000-0x0000000007C6A000-memory.dmp

          memory/2264-81-0x0000000007C30000-0x0000000007C38000-memory.dmp

          memory/2264-16-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/2264-89-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/2264-17-0x0000000005920000-0x0000000005F48000-memory.dmp

          memory/3168-85-0x00000000061C0000-0x0000000006210000-memory.dmp

          memory/3168-26-0x0000000000400000-0x0000000000440000-memory.dmp