Analysis

  • max time kernel
    119s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    13/07/2020, 14:23

General

  • Target
    44c903608379d2f6a02eaf669f92c7c1.exe
  • Size 626KB
  • Sample200713-41l8hxbfd2
  • SHA256 fb3df5f8cf59f50c2f08f0cb401b0a78a4c3a28007b1b8ef29673c4753d45488
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\LocalLow\machineinfo.txt

  • raccoon

Ransom Note
  • [Raccoon Stealer] - v1.5.13-af-hotfix Release Build compiled on Mon Jul 6 14:33:03 2020 Launched at: 2020.07.13 - 16:22:39 GMT Bot_ID: 3E009A64-65D7-465C-9098-F2673DD3F416_Admin Running on a desktop =R=A=C=C=O=O=N= - Cookies: 0 - Passwords: 5 - Files: 0 System Information: - System Language: English - System TimeZone: -0 hrs - IP: 154.61.71.13 - Location: 37.750999, -97.821999 | ?, ?, United States (?) - ComputerName: OWZMOTQA - Username: Admin - Windows version: NT 10.0 - Product name: Windows 10 Pro - System arch: x64 - CPU: Persocon Processor 2.5+ (2 cores) - RAM: 4095 MB (774 MB used) - Screen resolution: 1280x720 - Display devices: 0) Microsoft Basic Display Adapter ============

Signatures

  • Runs .reg file with regedit 1 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Modifies control panel 1 IoCs
  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Raccoon log file 1 IoCs

    Detects a log file produced by the Raccoon Stealer.

  • Delays execution with timeout.exe 1 IoCs
  • Checks whether UAC is enabled 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Program crash 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Checks for installed software on the system 1 TTPs 33 IoCs
  • Suspicious use of WriteProcessMemory 172 IoCs
  • Loads dropped DLL 6 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Modifies registry class 113 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs

Processes

  • C:\Users\Admin\AppData\Local\Temp\44c903608379d2f6a02eaf669f92c7c1.exe
    "C:\Users\Admin\AppData\Local\Temp\44c903608379d2f6a02eaf669f92c7c1.exe"
    1⤵
    • Drops file in Windows directory
    • Checks for installed software on the system
    • Suspicious use of WriteProcessMemory
    • Drops file in Program Files directory
    PID:1508
    • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe
      "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe"
      2⤵
      • Executes dropped EXE
      • Checks for installed software on the system
      • Suspicious use of WriteProcessMemory
      • Loads dropped DLL
      PID:736
      • C:\Users\Admin\AppData\Local\Temp\lSdtRzYnBS.exe
        "C:\Users\Admin\AppData\Local\Temp\lSdtRzYnBS.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:3960
        • C:\Windows\SysWOW64\ipconfig.exe
          "C:\Windows\system32\ipconfig.exe"
          4⤵
          • Suspicious behavior: MapViewOfSection
          • Suspicious behavior: EnumeratesProcesses
          PID:2912
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe"
            5⤵
            • Drops file in Windows directory
            PID:3264
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1532
        • C:\Windows\SysWOW64\timeout.exe
          timeout /T 10 /NOBREAK
          4⤵
          • Delays execution with timeout.exe
          PID:2332
    • C:\Windows\SysWOW64\regedit.exe
      "C:\Windows\System32\regedit.exe" \s C:\Windows\wotsuper.reg
      2⤵
      • Runs .reg file with regedit
      PID:684
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
    1⤵
    • Modifies Internet Explorer settings
    • Drops file in Windows directory
    • Modifies control panel
    • Checks whether UAC is enabled
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of AdjustPrivilegeToken
    • Modifies registry class
    PID:2868
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2868 -s 3448
      2⤵
      • Checks processor information in registry
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of NtCreateProcessExOtherParentProcess
      PID:432
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:3468

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/432-4-0x00000239075F0000-0x00000239075F1000-memory.dmp

        memory/432-16-0x00000239083A0000-0x00000239083A1000-memory.dmp

        memory/432-15-0x0000023908580000-0x0000023908581000-memory.dmp

        memory/432-10-0x0000023908460000-0x0000023908461000-memory.dmp

        memory/432-5-0x00000239075F0000-0x00000239075F1000-memory.dmp

        memory/432-29-0x0000023907590000-0x0000023907591000-memory.dmp

        memory/736-7-0x0000000000D46000-0x0000000000D47000-memory.dmp

        memory/736-8-0x00000000029A0000-0x00000000029A1000-memory.dmp

        memory/2912-37-0x0000000006AA0000-0x0000000006B14000-memory.dmp

        memory/3264-39-0x0000000000400000-0x0000000000465000-memory.dmp