Analysis

  • max time kernel
    138s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-06-2024 10:32

General

  • Target

    3.exe

  • Size

    1.9MB

  • MD5

    7b4c1ed22b968699059bb4717e2665a7

  • SHA1

    731e51b1a3d522ea391495271d977e0e4961f203

  • SHA256

    d72087da88129a3b1bce3505c119cb418f84bd68659eb33385546b9e33dddb4c

  • SHA512

    d0c89dd0b914991ab2eeb4de48f98c46f14888849bf9a116a902fb497ef2b65725e82f8ac8f465172d147d7a9ec6a0fb9ae829f138e0ec3579a79dee48ec03d7

  • SSDEEP

    12288:xthPA7R1brgevLbkgpco8BuB+VotGHNq82Qd+Y9J7O+aL229GgPlZqUXJctT:xY7R1YeDogpvB/ktJ2Qd99Q9OsJcx

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • 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.

  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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.

  • Windows security modification 2 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3.exe
    "C:\Users\Admin\AppData\Local\Temp\3.exe"
    1⤵
    • UAC bypass
    • Windows security bypass
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:724
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\3.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1052
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
      2⤵
        PID:4604
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2224
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
        2⤵
          PID:4536
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1304,i,8660989700097327804,17931739887231169645,262144 --variations-seed-version --mojo-platform-channel-handle=1300 /prefetch:8
        1⤵
          PID:2396

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r5exwjff.aqp.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/724-0-0x000001A750820000-0x000001A750832000-memory.dmp

          Filesize

          72KB

        • memory/724-1-0x00007FF8D8113000-0x00007FF8D8115000-memory.dmp

          Filesize

          8KB

        • memory/724-2-0x00007FF8D8110000-0x00007FF8D8BD1000-memory.dmp

          Filesize

          10.8MB

        • memory/724-3-0x000001A752600000-0x000001A752696000-memory.dmp

          Filesize

          600KB

        • memory/724-23-0x00007FF8D8110000-0x00007FF8D8BD1000-memory.dmp

          Filesize

          10.8MB

        • memory/1052-16-0x00007FF8D8110000-0x00007FF8D8BD1000-memory.dmp

          Filesize

          10.8MB

        • memory/1052-5-0x00007FF8D8110000-0x00007FF8D8BD1000-memory.dmp

          Filesize

          10.8MB

        • memory/1052-6-0x00000220ED310000-0x00000220ED332000-memory.dmp

          Filesize

          136KB

        • memory/1052-20-0x00007FF8D8110000-0x00007FF8D8BD1000-memory.dmp

          Filesize

          10.8MB

        • memory/1052-4-0x00007FF8D8110000-0x00007FF8D8BD1000-memory.dmp

          Filesize

          10.8MB

        • memory/2224-17-0x0000000000400000-0x0000000000444000-memory.dmp

          Filesize

          272KB

        • memory/2224-21-0x0000000005C00000-0x00000000061A4000-memory.dmp

          Filesize

          5.6MB

        • memory/2224-22-0x0000000005800000-0x0000000005866000-memory.dmp

          Filesize

          408KB

        • memory/2224-25-0x0000000006B20000-0x0000000006B70000-memory.dmp

          Filesize

          320KB