Analysis

  • max time kernel
    153s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/06/2024, 01:23

General

  • Target
    25bff48681722f169b4535d7564606d13de109f529177c2f1c8f1ed2ea46412f.exe
  • Size 758KB
  • Sample240607-brscvsfb4y
  • SHA256 25bff48681722f169b4535d7564606d13de109f529177c2f1c8f1ed2ea46412f
  • 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 1 IoCs

    Run Powershell and hide display window.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\25bff48681722f169b4535d7564606d13de109f529177c2f1c8f1ed2ea46412f.exe
    "C:\Users\Admin\AppData\Local\Temp\25bff48681722f169b4535d7564606d13de109f529177c2f1c8f1ed2ea46412f.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:4796
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle hidden "$Eudaemonia=Get-Content 'C:\Users\Admin\AppData\Local\Temp\auf\utryktes.Sub';$Emballage=$Eudaemonia.SubString(44370,3);.$Emballage($Eudaemonia)"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2368
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
        3⤵
          PID:4624
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe"
          3⤵
          • Suspicious use of NtCreateThreadExHideFromDebugger
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1564
    • 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 --no-appcompat-clear --mojo-platform-channel-handle=1036 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:3536

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            __PSScriptPolicyTest_hq5ex3il.u4b.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hq5ex3il.u4b.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512

            Anomalien.Frf

            • Path C:\Users\Admin\AppData\Local\Temp\auf\Anomalien.Frf
            • Size 333KB
            • SHA256 71b458b9f6014426c16fdd936a4d56aeabd11c4dd5da58c0efe5597f2d36a89a
            • MD5 SHA1 SHA512 SSDEEP

            utryktes.Sub

            • Path C:\Users\Admin\AppData\Local\Temp\auf\utryktes.Sub
            • Size 50KB
            • SHA256 97d4fd25414969f5ba5998184d00bbb436c42938b3c12ef13de9e788702a9d9d
            • MD5 SHA1 SHA512 SSDEEP

            memory/1564-199-0x0000000024B40000-0x0000000024B4A000-memory.dmp

            memory/1564-198-0x0000000025210000-0x00000000252A2000-memory.dmp

            memory/1564-197-0x0000000024AF0000-0x0000000024B40000-memory.dmp

            memory/1564-195-0x0000000001200000-0x0000000001242000-memory.dmp

            memory/1564-194-0x0000000001200000-0x0000000002454000-memory.dmp

            memory/2368-177-0x0000000007A40000-0x0000000007FE4000-memory.dmp

            memory/2368-183-0x0000000073A3E000-0x0000000073A3F000-memory.dmp

            memory/2368-171-0x0000000006490000-0x00000000064AE000-memory.dmp

            memory/2368-172-0x0000000006520000-0x000000000656C000-memory.dmp

            memory/2368-173-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-174-0x0000000006960000-0x00000000069F6000-memory.dmp

            memory/2368-176-0x0000000006A30000-0x0000000006A52000-memory.dmp

            memory/2368-175-0x0000000006910000-0x000000000692A000-memory.dmp

            memory/2368-153-0x0000000073A3E000-0x0000000073A3F000-memory.dmp

            memory/2368-160-0x0000000005E20000-0x0000000005E86000-memory.dmp

            memory/2368-179-0x0000000008670000-0x0000000008CEA000-memory.dmp

            memory/2368-181-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-159-0x0000000005DB0000-0x0000000005E16000-memory.dmp

            memory/2368-166-0x0000000005E90000-0x00000000061E4000-memory.dmp

            memory/2368-184-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-185-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-187-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-188-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-189-0x0000000008CF0000-0x000000000CEEE000-memory.dmp

            memory/2368-190-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-158-0x0000000005430000-0x0000000005452000-memory.dmp

            memory/2368-157-0x0000000005610000-0x0000000005C38000-memory.dmp

            memory/2368-156-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-154-0x0000000073A30000-0x00000000741E0000-memory.dmp

            memory/2368-155-0x0000000004E40000-0x0000000004E76000-memory.dmp