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Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21/09/2024, 19:50

General

  • Target

    NO7367027738832789257820.rtf

  • Size

    642KB

  • MD5

    b16595c7c02434cb4e95e46eaa864262

  • SHA1

    d9ed513e1cc6a3538c12fb404ff576c32028a3bd

  • SHA256

    3e1ba9d9fae253f1cebc7ddaafbc893f10cd8fd9b644e4b18f4e4f06f3cb62b0

  • SHA512

    9b362dab6d79482201b789eb12335f3a9cc0e30663e63cd40ff169084ec4284cf957914f40b5e15f75215e19194dc84c3a24462bc39383e79dc626dcb11a1e9e

  • SSDEEP

    6144:ewAYwAYwAg+bU29khgINRyJT8cai2+QurA0nI:n9

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Blocklisted process makes network request 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.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • 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.

  • Drops file in System32 directory 1 IoCs
  • 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).

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 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\NO7367027738832789257820.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:1852
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2940
    • 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
      • System Location Discovery: System Language Discovery
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2968
      • C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe
        "C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2196
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:592
        • C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe
          "C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:112

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      20KB

      MD5

      154d9cbf78c8af61688ce6d4cc8354dc

      SHA1

      19af745ff72e460d1f6d1099e4f1f95a10f3c543

      SHA256

      abc76022cd8df1d31df8c1fc1c193c074ef1101b3557a6225fe668f22f9e26b2

      SHA512

      d765226c334ddc17a1cca2507ea1bd0a5bea1be4d41b38fe1b3cd301c6234a4d3e1c0dc7addfde87e73eb7ef10cec19296defdc28cb4a473cb892c560628b119

    • C:\Users\Admin\AppData\Roaming\bwoidsplug10496.exe

      Filesize

      630KB

      MD5

      1046de21cd8e9ff519ce5cb089edd5f5

      SHA1

      14e56d2cdbdfaaa7c49e3b3fed62df2d0f114d83

      SHA256

      dbda8c6ed6803fd8eeb547a60ee600c101315b478fa055d4a1d0ac438fc45527

      SHA512

      ba3c69da22314de39a20b458a6c49041b280f5eb283a5225f3b40ee9381ff7fcb037c274a9fc0988cad7432b50c2fc4520221e6fdf5aa0bcc095188d14181d56

    • memory/112-28-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/112-35-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/112-26-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/112-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/112-30-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/112-32-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/112-37-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/112-39-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/1852-22-0x000000007180D000-0x0000000071818000-memory.dmp

      Filesize

      44KB

    • memory/1852-2-0x000000007180D000-0x0000000071818000-memory.dmp

      Filesize

      44KB

    • memory/1852-0-0x000000002FBD1000-0x000000002FBD2000-memory.dmp

      Filesize

      4KB

    • memory/1852-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1852-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2196-25-0x0000000004CD0000-0x0000000004D52000-memory.dmp

      Filesize

      520KB

    • memory/2196-24-0x000000006B98E000-0x000000006B98F000-memory.dmp

      Filesize

      4KB

    • memory/2196-17-0x0000000000560000-0x0000000000570000-memory.dmp

      Filesize

      64KB

    • memory/2196-16-0x0000000000AD0000-0x0000000000B72000-memory.dmp

      Filesize

      648KB

    • memory/2196-14-0x000000006B98E000-0x000000006B98F000-memory.dmp

      Filesize

      4KB