Analysis

  • max time kernel
    40s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    02/09/2021, 07:47

General

  • Target
    cc7e09f135b6cb09c0a32d54beb24789a94a5ccec038a.exe
  • Size 338KB
  • Sample210902-a6arbmg5mj
  • SHA256 cc7e09f135b6cb09c0a32d54beb24789a94a5ccec038a038ad2ddaeedb697ef0
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • raccoon

Botnet
  • 6e76410dbdf2085ebcf2777560bd8cb0790329c9

Attributes
  • url4cnc

    https://telete.in/bibiOutriggr1

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cc7e09f135b6cb09c0a32d54beb24789a94a5ccec038a.exe
    "C:\Users\Admin\AppData\Local\Temp\cc7e09f135b6cb09c0a32d54beb24789a94a5ccec038a.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\1484894427.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3332
      • C:\Users\Admin\AppData\Local\Temp\1484894427.exe
        "C:\Users\Admin\AppData\Local\Temp\1484894427.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1304
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\1484894427.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1752
          • C:\Windows\SysWOW64\timeout.exe
            timeout /T 10 /NOBREAK
            5⤵
            • Delays execution with timeout.exe
            PID:2364
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "cc7e09f135b6cb09c0a32d54beb24789a94a5ccec038a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\cc7e09f135b6cb09c0a32d54beb24789a94a5ccec038a.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "cc7e09f135b6cb09c0a32d54beb24789a94a5ccec038a.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3332

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1304-121-0x0000000002B90000-0x0000000002CDA000-memory.dmp

        memory/1304-122-0x0000000000400000-0x0000000002B86000-memory.dmp

        memory/3548-116-0x0000000000400000-0x0000000002B5F000-memory.dmp

        memory/3548-115-0x0000000002C60000-0x0000000002DAA000-memory.dmp