Resubmissions

16-02-2024 14:49

240216-r63p5scg33 10

16-02-2024 14:21

240216-rnzkrsbh8v 10

Analysis

  • max time kernel
    71s
  • max time network
    72s
  • platform
    windows7_x64
  • resource
    win7-20231215-es
  • resource tags

    arch:x64arch:x86image:win7-20231215-eslocale:es-esos:windows7-x64systemwindows
  • submitted
    16-02-2024 14:49

Errors

Reason
Machine shutdown

General

  • Target

    EWW.exe

  • Size

    920KB

  • MD5

    8077b3e5a20f5d489fa82982140733ab

  • SHA1

    52a097dfa8e24b4ab52c9cae829df1b38ecc4e84

  • SHA256

    67362222dc4dae93f62f984771afb1b9d319ea23335bd4bb4e941f5e1248edc2

  • SHA512

    580c5888489d575fcc1e4e0a802ee125e9036761436ed1b58ae9e51e0e6bc5e025a892328cda12530b5343f8ace9bdba967bdeaca982190d3ad39fc0bad0d6e2

  • SSDEEP

    24576:pRmJkcoQricOIQxiZY1iaM/U48ni1dq6ReVbi4:mJZoQrbTFZY1iaM/vuWdq6O

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\EWW.exe
    "C:\Users\Admin\AppData\Local\Temp\EWW.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2892
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Users\Admin\AppData\Local\Temp\EWW.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2696
  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n /f "C:\Users\Admin\Desktop\UseStep.dot"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1180
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x0
    1⤵
      PID:1944
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x1
      1⤵
        PID:1708

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRD0000.doc

        Filesize

        1.7MB

        MD5

        faf6c5924cd9c96911afa78176226da6

        SHA1

        f13fa379a1243ba20f29ae072b1abcd34055c7f4

        SHA256

        4003c0969eee4a8007b1e22e41805699da12cede4be26206cee3f4fc54745a65

        SHA512

        7609b052227532059790d2aa07e24afe68e2e8cf4eb48561716e35b860f0cd06186c9b545626d03dbf1dc856443b2f1703cb0a9777030777bd1831497e509c78

      • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

        Filesize

        20KB

        MD5

        b1f7b41db4cadcb090cd6ea3d002c90d

        SHA1

        6e8aa3efcb5286690eef2f7a13165f3ed25a380b

        SHA256

        ca212999697108769d9f30fef90bdac65869cae28df216915da765cebddd7782

        SHA512

        efc78c6dcdcce38e80d3f194abda481aa30a7e2af58ff75a3ada5785ecd3c1d5fb1a6bb64b474f8d8c56718a0a9ede794903d6295740848472b00416159a1456

      • memory/1180-20-0x000000002F121000-0x000000002F122000-memory.dmp

        Filesize

        4KB

      • memory/1180-21-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1180-73-0x000000006CD3D000-0x000000006CD48000-memory.dmp

        Filesize

        44KB

      • memory/1180-72-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1180-22-0x000000006CD3D000-0x000000006CD48000-memory.dmp

        Filesize

        44KB

      • memory/1708-76-0x0000000002BE0000-0x0000000002BE1000-memory.dmp

        Filesize

        4KB

      • memory/1944-74-0x00000000031F0000-0x00000000031F1000-memory.dmp

        Filesize

        4KB

      • memory/2696-18-0x0000000073D10000-0x00000000743FE000-memory.dmp

        Filesize

        6.9MB

      • memory/2696-13-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2696-11-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2696-19-0x0000000004B40000-0x0000000004B80000-memory.dmp

        Filesize

        256KB

      • memory/2696-15-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2696-75-0x0000000073D10000-0x00000000743FE000-memory.dmp

        Filesize

        6.9MB

      • memory/2696-17-0x0000000004B40000-0x0000000004B80000-memory.dmp

        Filesize

        256KB

      • memory/2696-16-0x0000000073D10000-0x00000000743FE000-memory.dmp

        Filesize

        6.9MB

      • memory/2892-10-0x0000000000260000-0x0000000000264000-memory.dmp

        Filesize

        16KB