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Analysis

  • max time kernel
    126s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29/01/2025, 06:04

General

  • Target

    RHGP0987090G.rtf

  • Size

    7KB

  • MD5

    a8cfd32e2bd9180b0b7bf1dcdc880f99

  • SHA1

    8e162cf763f149ac2d6436de1808df569a75f72b

  • SHA256

    dfade43b170cbeefcb58db57df4095fb2c109f85af3dd6bc514cbf2a9d86b2b9

  • SHA512

    6527d65392aec4e53d8fd65f26c1a5f5169b17e6332b9362bf0202cacddc175cf8ddaaf1d8f0392100dfb6c75e582091fbf0e5235f77d427ca67c4a8120938d2

  • SSDEEP

    48:OVcoVYEENMxQcvWvnCAJcSYl+UaOhkoq/lfwdPiLwmv7vpE8IMh7BqlEMAZRgFlk:435vibc3ksoidKLHvxIMh74l31AzOi

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.antoniomayol.com:21
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    cMhKDQUk1{;%

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file 1 IoCs
  • Drops startup file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 1 IoCs
  • 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.

  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\RHGP0987090G.rtf"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2540
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1988
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Downloads MZ/PE file
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:792
      • C:\Users\Admin\AppData\Local\Temp\name.exe
        "C:\Users\Admin\AppData\Local\Temp\name.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2912
        • C:\Users\Admin\AppData\Local\carryover\resharing.exe
          "C:\Users\Admin\AppData\Local\Temp\name.exe"
          3⤵
          • Drops startup file
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:2620
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
            "C:\Users\Admin\AppData\Local\Temp\name.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1092

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\name.exe

      Filesize

      534KB

      MD5

      375d1d9a080b5533da09c98716c40f0d

      SHA1

      cb1e3e386b935eb999b319c1b6ae0b5b6bedf6ef

      SHA256

      86ccb2e2b2b1780ec85596c64030ce2525145afa00f9e3db1c3582c4f4afe7e6

      SHA512

      da8b7b76c532a568d4d2cad2227591b2a372687dd2b47cf369d09e7b7d67b2b6e5976894a8b59c635ebc67d18c10543de316051aad1191641a05a79b80e02b35

    • memory/792-12-0x0000000004A70000-0x0000000004BA8000-memory.dmp

      Filesize

      1.2MB

    • memory/1092-61-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1092-62-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/1092-63-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2540-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2540-2-0x0000000070CFD000-0x0000000070D08000-memory.dmp

      Filesize

      44KB

    • memory/2540-0-0x000000002FCC1000-0x000000002FCC2000-memory.dmp

      Filesize

      4KB

    • memory/2540-44-0x0000000070CFD000-0x0000000070D08000-memory.dmp

      Filesize

      44KB

    • memory/2620-45-0x0000000001360000-0x0000000001498000-memory.dmp

      Filesize

      1.2MB

    • memory/2620-65-0x0000000001360000-0x0000000001498000-memory.dmp

      Filesize

      1.2MB

    • memory/2912-43-0x0000000000290000-0x00000000003C8000-memory.dmp

      Filesize

      1.2MB

    • memory/2912-40-0x0000000002A90000-0x0000000002BC8000-memory.dmp

      Filesize

      1.2MB

    • memory/2912-22-0x0000000000290000-0x00000000003C8000-memory.dmp

      Filesize

      1.2MB