Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    08/05/2024, 07:37

General

  • Target
    Paid Invoice #907238.exe
  • Size 688KB
  • Sample240508-jfx3zacb67
  • SHA256 0cfbe133465059e9d21adb0ee0bcf53ecb2f3459bc258b9a78c6a56cfbf15f27
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • 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 1 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).

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Paid Invoice #907238.exe
    "C:\Users\Admin\AppData\Local\Temp\Paid Invoice #907238.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2464
    • 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\Paid Invoice #907238.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2028
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CsrqNkKedp.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2060
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CsrqNkKedp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4106.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2600
    • C:\Users\Admin\AppData\Local\Temp\Paid Invoice #907238.exe
      "C:\Users\Admin\AppData\Local\Temp\Paid Invoice #907238.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2892

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp4106.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp4106.tmp
        • Size 1KB
        • SHA256 943a8812e1d3cf2612a8448e0a034952991b19768523999706e7584a6ff02ef0
        • MD5 SHA1 SHA512

        d93f411851d7c929.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
        • Size 7KB
        • SHA256 93b6c3a8d56358363ea7638f75b6fdd29077d7c386ce63aba2ca4692bba01677
        • MD5 SHA1 SHA512 SSDEEP

        memory/2464-30-0x0000000074680000-0x0000000074D6E000-memory.dmp

        memory/2464-1-0x0000000001010000-0x00000000010C0000-memory.dmp

        memory/2464-2-0x0000000000320000-0x0000000000336000-memory.dmp

        memory/2464-3-0x0000000074680000-0x0000000074D6E000-memory.dmp

        memory/2464-4-0x00000000003E0000-0x00000000003F6000-memory.dmp

        memory/2464-5-0x0000000005150000-0x00000000051D4000-memory.dmp

        memory/2464-0-0x000000007468E000-0x000000007468F000-memory.dmp

        memory/2892-18-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/2892-27-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/2892-29-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/2892-28-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/2892-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        memory/2892-24-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/2892-20-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/2892-22-0x0000000000400000-0x0000000000442000-memory.dmp