Analysis

  • max time kernel
    154s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    02/10/2021, 02:06

General

  • Target
    af37877133e6e656c670126e562f53e50be8867239e7e.exe
  • Size 545KB
  • Sample211002-cjgf3addb4
  • SHA256 af37877133e6e656c670126e562f53e50be8867239e7e0b2beb88072ec6ea76e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • raccoon

Botnet
  • �ru2AC�^�����wL,Q֎�B��Mc1/`�`�1K�:�y�

Attributes
  • url4cnc

    �cb{K^�WXP�۸��fB:O�٩ϥ6=q!�(�p�2�d��oqix����7�W��e�gV�� ����1 ���J2�탾ݭ�

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Loads dropped DLL 8 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.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af37877133e6e656c670126e562f53e50be8867239e7e.exe
    "C:\Users\Admin\AppData\Local\Temp\af37877133e6e656c670126e562f53e50be8867239e7e.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1036
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\af37877133e6e656c670126e562f53e50be8867239e7e.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:1876

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1036-60-0x0000000075051000-0x0000000075053000-memory.dmp

        memory/1036-61-0x0000000000220000-0x00000000002AE000-memory.dmp

        memory/1036-62-0x0000000000400000-0x0000000000495000-memory.dmp