Analysis

  • max time kernel
    149s
  • max time network
    77s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    16-09-2024 07:07

General

  • Target

    4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227.rtf

  • Size

    1011KB

  • MD5

    4d6c7b93c085f50060e99dba63ef5e27

  • SHA1

    f67de698fd8eb036b8e83211880d1c449fe6f7e2

  • SHA256

    4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227

  • SHA512

    e7f1c409b67a4070c16078037ecd1d2992543918bf728508bf610a2c1f3626ffbc0ea5efae92798765269f65a39ce7c11078a496f900e46df1a2b77eb21c3361

  • SSDEEP

    6144:6wAYwA9WMyBtBWojqJnnR30lOGXdUz4+2:Bu

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • 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 3 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 6 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 53 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 62 IoCs
  • Suspicious use of SendNotifyMessage 62 IoCs
  • Suspicious use of SetWindowsHookEx 3 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\4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227.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:1920
    • C:\Windows\SysWOW64\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1528
  • 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:2592
    • C:\Users\Admin\AppData\Roaming\plugfkg79.exe
      "C:\Users\Admin\AppData\Roaming\plugfkg79.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3000
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\plugfkg79.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:2400
      • C:\Users\Admin\AppData\Roaming\plugfkg79.exe
        "C:\Users\Admin\AppData\Roaming\plugfkg79.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1376

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    19KB

    MD5

    1ed2cbe1c49e71307af38e14aa532377

    SHA1

    ef7799ff07eda357045657f0e45044550d507b54

    SHA256

    8b67807f7540675161df3e937dea54948e3071af6454e115c0900807f73d2719

    SHA512

    b4f288fa43e5ddda5e9c7e78f2ac97593460c4bddb27c1506403ef4ca379f6d719965959d1d6063b0c634690a8977d703f6a3ee8f993ef44ee5da33fe316c758

  • \Users\Admin\AppData\Roaming\plugfkg79.exe

    Filesize

    755KB

    MD5

    49a1b7551dcb6332880de16b36be8015

    SHA1

    f14439e569ab7bdde5f50e1a430fdfc150fd45d2

    SHA256

    8722d9be017fd945c9ace288f405051fd8ced8c141cadf680448d4e6cd5bf8ac

    SHA512

    a4d88e90e5aa53eb9d07b3527e1c4835c0a1cc2f2566a941da6e73cc1ded4c365faada34cf8cb632e2d4d2bce285f2b964962e944ad5fcb31cb9ebc8c1a1c940

  • memory/1376-22-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1376-30-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1376-20-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1376-24-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1376-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1376-27-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1376-29-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1376-18-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1920-0-0x000000002F9C1000-0x000000002F9C2000-memory.dmp

    Filesize

    4KB

  • memory/1920-2-0x000000007118D000-0x0000000071198000-memory.dmp

    Filesize

    44KB

  • memory/1920-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1920-60-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1920-61-0x000000007118D000-0x0000000071198000-memory.dmp

    Filesize

    44KB

  • memory/3000-17-0x00000000051C0000-0x0000000005242000-memory.dmp

    Filesize

    520KB

  • memory/3000-16-0x000000006ABAE000-0x000000006ABAF000-memory.dmp

    Filesize

    4KB

  • memory/3000-15-0x00000000005A0000-0x00000000005B0000-memory.dmp

    Filesize

    64KB

  • memory/3000-14-0x0000000001360000-0x000000000141E000-memory.dmp

    Filesize

    760KB

  • memory/3000-13-0x000000006ABAE000-0x000000006ABAF000-memory.dmp

    Filesize

    4KB