Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24/05/2024, 05:09

General

  • Target
    7b044d66c7fcbc3d3bf6f5d52e96d3b2.rtf
  • Size 4.1MB
  • Sample240524-fs5f2aef38
  • SHA256 9998ef5f4ea72ae55f9f033b6aa7c21e5e3461ddd69e90a6525042ff6daab653
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 7 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • 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.

  • 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 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\7b044d66c7fcbc3d3bf6f5d52e96d3b2.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2252
    • 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
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2340
      • C:\Users\Admin\AppData\Local\Temp\qgjivQDG.exe
        "C:\Users\Admin\AppData\Local\Temp\qgjivQDG.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:628
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "C:\Users\Admin\AppData\Local\Temp\qgjivQDG.exe"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2760

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
          • Size 68KB
          • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
          • MD5 SHA1 SHA512 SSDEEP

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 344B
          • SHA256 45b3785249bd5ab861478ec14fba58984a567846076d1ca3d9ffce6e5401dffa
          • MD5 SHA1 SHA512

          Cab2280.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Cab2280.tmp
          • Size 65KB
          • SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
          • MD5 SHA1 SHA512 SSDEEP

          Tar23B0.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Tar23B0.tmp
          • Size 177KB
          • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
          • MD5 SHA1 SHA512 SSDEEP

          qgjivQDG.exe

          • Path C:\Users\Admin\AppData\Local\Temp\qgjivQDG.exe
          • Size 1.0MB
          • SHA256 379d64cc4cd6991eca9102ffac6209174ae16062ad9af636830a1a4cbb956a04
          • MD5 SHA1 SHA512 SSDEEP

          Normal.dotm

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
          • Size 20KB
          • SHA256 036c204f889da9b75f3d756c6a956e20746387be5f18ba803e31b37e2cf19ef9
          • MD5 SHA1 SHA512 SSDEEP

          memory/2512-0-0x000000002FFF1000-0x000000002FFF2000-memory.dmp

          memory/2512-2-0x000000007171D000-0x0000000071728000-memory.dmp

          memory/2512-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/2512-124-0x000000007171D000-0x0000000071728000-memory.dmp

          memory/2512-142-0x000000005FFF0000-0x0000000060000000-memory.dmp

          memory/2760-122-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/2760-121-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/2760-120-0x0000000000400000-0x0000000000442000-memory.dmp