Analysis

  • max time kernel
    76s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    11/08/2021, 09:46

General

  • Target
    659BCEFDB9C6E948D20CC2582FA081EC.exe
  • Size 477KB
  • Sample210811-vr9dqdzgp6
  • SHA256 30dbf8a38ef44fcafeb10cf5339d7e124773d1c7f33e269f1100b6c4f93a134b
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • raccoon

Botnet
  • 83fbe81dd43f775dd8af3cd619f88f428fbd9a96

Attributes
  • url4cnc

    https://telete.in/opa4kiprivatem

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Raccoon Stealer Payload 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • 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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\659BCEFDB9C6E948D20CC2582FA081EC.exe
    "C:\Users\Admin\AppData\Local\Temp\659BCEFDB9C6E948D20CC2582FA081EC.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:808
    • C:\Users\Admin\AppData\Local\Temp\m6qSpW8neJ.exe
      "C:\Users\Admin\AppData\Local\Temp\m6qSpW8neJ.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3820
      • C:\Windows\SysWOW64\schtasks.exe
        /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\sqlcmd.exe"
        3⤵
        • Creates scheduled task(s)
        PID:2164
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\659BCEFDB9C6E948D20CC2582FA081EC.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2804
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:3648
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\sqlcmd.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\sqlcmd.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\sqlcmd.exe"
      2⤵
      • Creates scheduled task(s)
      PID:2512

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/808-115-0x0000000000400000-0x0000000002CAE000-memory.dmp

        memory/808-114-0x00000000048E0000-0x0000000004973000-memory.dmp

        memory/2240-133-0x0000000000400000-0x0000000002C6A000-memory.dmp

        memory/2240-132-0x0000000002C70000-0x0000000002DBA000-memory.dmp

        memory/3820-127-0x0000000002C70000-0x0000000002D1E000-memory.dmp

        memory/3820-128-0x0000000000400000-0x0000000002C6A000-memory.dmp