Resubmissions

20-02-2021 16:38

210220-b514g72f52 10

24-07-2020 13:10

200724-dhjq1jvnt2 10

Analysis

  • max time kernel
    71s
  • max time network
    73s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    24-07-2020 13:10

General

  • Target

    Payment_Reminder_UnPaid_PDF.exe

  • Size

    752KB

  • MD5

    ceee22cc2421bc32bbbc8c9b57f67b20

  • SHA1

    ab1fce0e0b643e5423fb64549c6587105c806974

  • SHA256

    5ee204e73d774718f344f40f2345b6eb443ed2da6196aef5cc66e7691f069849

  • SHA512

    2dbf18cd9a7e65a26456bad495b45835238890fbbaf417b804f33c2e0123014ddd547c89fceb1e18453db6c8a9088c0ac66794e4917a0609958308855f7b99f9

Malware Config

Extracted

Path

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

Family

raccoon

Ransom Note
[Raccoon Stealer] - v1.5.13-af-hotfix Release Build compiled on Mon Jul 6 14:33:03 2020 Launched at: 2020.07.24 - 15:10:55 GMT Bot_ID: 18823CA4-5761-4226-8787-CF36135F1C68_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: LZUKLIOU - 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 (711 MB used) - Screen resolution: 1280x720 - Display devices: 0) Microsoft Basic Display Adapter ============

Signatures

  • Reads user/profile data of web browsers 2 TTPs

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

  • Reads user/profile data of local email clients 2 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of WriteProcessMemory 15 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Raccoon log file 1 IoCs

    Detects a log file produced by the Raccoon Stealer.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Loads dropped DLL 6 IoCs
  • JavaScript code in executable 1 IoCs
  • Delays execution with timeout.exe 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment_Reminder_UnPaid_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment_Reminder_UnPaid_PDF.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious use of SetThreadContext
    PID:3952
    • C:\Users\Admin\AppData\Local\Temp\Payment_Reminder_UnPaid_PDF.exe
      "{path}"
      2⤵
      • Suspicious use of WriteProcessMemory
      • Loads dropped DLL
      PID:1804
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\Payment_Reminder_UnPaid_PDF.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3872
        • C:\Windows\SysWOW64\timeout.exe
          timeout /T 10 /NOBREAK
          4⤵
          • Delays execution with timeout.exe
          PID:3880

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\freebl3.dll

  • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\freebl3.dll

  • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\mozglue.dll

  • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\nss3.dll

  • \Users\Admin\AppData\LocalLow\3098htrhpen8ifg0\softokn3.dll

  • \Users\Admin\AppData\LocalLow\sqlite3.dll

  • memory/1804-0-0x0000000000400000-0x0000000000493000-memory.dmp

    Filesize

    588KB

  • memory/1804-1-0x000000000043FA98-mapping.dmp

  • memory/1804-2-0x0000000000400000-0x0000000000493000-memory.dmp

    Filesize

    588KB

  • memory/3872-9-0x0000000000000000-mapping.dmp

  • memory/3880-10-0x0000000000000000-mapping.dmp