Analysis

  • max time kernel
    86s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    26/09/2021, 01:51

General

  • Target
    b1ab1cb91b6b7bda53a131be46e1f7d9.exe
  • Size 434KB
  • Sample210926-b9vkyaebbj
  • SHA256 261fdc03fcf9d883519eff79dae29b188e2aa43f9f2e3d7e4a6da154a5b9af8e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • raccoon

Botnet
  • 5ff0ccb2bc00dc52d1ad09949e9c7663bc9ca4d4

Attributes
  • url4cnc

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • suricata: ET MALWARE Win32.Raccoon Stealer CnC Activity (dependency download)

    suricata: ET MALWARE Win32.Raccoon Stealer CnC Activity (dependency download)

  • suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

    suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

  • Downloads MZ/PE file
  • Loads dropped DLL 5 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1ab1cb91b6b7bda53a131be46e1f7d9.exe
    "C:\Users\Admin\AppData\Local\Temp\b1ab1cb91b6b7bda53a131be46e1f7d9.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3608
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\b1ab1cb91b6b7bda53a131be46e1f7d9.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4072
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:3044

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3608-115-0x00000000022F0000-0x0000000002380000-memory.dmp

        memory/3608-116-0x0000000000400000-0x00000000004F3000-memory.dmp