Analysis

  • max time kernel
    19s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    08/08/2021, 21:25

General

  • Target

    usfive_20210808-230024.exe

  • Size

    512KB

  • MD5

    3017ca4cc62880230dc67a092109323b

  • SHA1

    577ae7d931d653b3a159b477b0311f2a6e32ccb8

  • SHA256

    15e07520b35264846e6bedf304a486272112afcba09717f942d7e6d52199bd95

  • SHA512

    35f7e1655a10f99cf58e0ff7193ec2829d07023e0235d1e20af4b8b2511e41b4b16f7ff289bb9e9c798de856f6391fa3cc3164119d71ab886d8080eab7826937

Malware Config

Extracted

Family

raccoon

Botnet

c58b0b3f1f90ad7552aaf8e84180b7580f397001

Attributes
  • url4cnc

    https://telete.in/h_electricryptors2

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Raccoon Stealer Payload 2 IoCs
  • 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.

  • 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
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\usfive_20210808-230024.exe
    "C:\Users\Admin\AppData\Local\Temp\usfive_20210808-230024.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\usfive_20210808-230024.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:640
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:532

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1104-61-0x0000000000400000-0x0000000002CB6000-memory.dmp

          Filesize

          40.7MB

        • memory/1104-60-0x0000000000300000-0x0000000000393000-memory.dmp

          Filesize

          588KB

        • memory/1104-59-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

          Filesize

          8KB