Analysis

  • max time kernel
    20s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    08-08-2021 16:35

General

  • Target

    usfive_20210808-181522.exe

  • Size

    511KB

  • MD5

    c516b8434e20fba2c5ce93414bdd06a6

  • SHA1

    1fd7e3712d1d2bd96997d18280fbf0afe4569097

  • SHA256

    7c5200cb3685f3ba1d2a3c4bbf7b92db3a004b2443843f1b6bac425d72a5733c

  • SHA512

    7f13118474dd26dd5eba89cadf8e169ac15f5a488154dffbcaadb9daa29554a17ae895d5a2bc89499a35887f27beb82657e5b12fad066b1c9acade362de08e5c

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_20210808-181522.exe
    "C:\Users\Admin\AppData\Local\Temp\usfive_20210808-181522.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\usfive_20210808-181522.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1632
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:1740

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1724-62-0x0000000000400000-0x0000000002CB5000-memory.dmp

    Filesize

    40.7MB

  • memory/1724-61-0x0000000004520000-0x00000000045B3000-memory.dmp

    Filesize

    588KB

  • memory/1724-0-0x0000000075161000-0x0000000075163000-memory.dmp

    Filesize

    8KB