Analysis

  • max time kernel
    146s
  • max time network
    93s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    07-09-2024 12:13

General

  • Target

    039f5c692ba1c67c6e9b475738f40f4311e5e5625e4390d5e51685f6b4e548b8.exe

  • Size

    6.3MB

  • MD5

    45b55d1e5d2bf60cc572f541ae6fa7d1

  • SHA1

    2329f56147a299bcdbf20520e626cc8253e49a8d

  • SHA256

    039f5c692ba1c67c6e9b475738f40f4311e5e5625e4390d5e51685f6b4e548b8

  • SHA512

    5483964e050b2be073d3cf966b6dd6271556d4adfb420fb9ecf81f42f27cd06727016292dceb9a282f9fdcb451507309d1a78f58dd5d84e3022c0ea20c58dbe2

  • SSDEEP

    49152:rDiHluIUMaBlQkeq99ytafJLHQH9UdaRESvgKQUN7LpNoyuwHw6c+M8rUr+9r:qABlQkeq9gtafJzQdUdatpgwdM8rUr4r

Malware Config

Extracted

Family

cryptbot

C2

fivev5sb.top

Attributes
  • url_path

    /v1/upload.php

Signatures

  • CryptBot

    CryptBot is a C++ stealer distributed widely in bundle with other software.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\039f5c692ba1c67c6e9b475738f40f4311e5e5625e4390d5e51685f6b4e548b8.exe
    "C:\Users\Admin\AppData\Local\Temp\039f5c692ba1c67c6e9b475738f40f4311e5e5625e4390d5e51685f6b4e548b8.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Users\Admin\AppData\Local\Temp\service123.exe
      "C:\Users\Admin\AppData\Local\Temp\service123.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2592
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /tn "ServiceData4" /tr "C:\Users\Admin\AppData\Local\Temp\/service123.exe" /st 00:01 /du 9800:59 /sc once /ri 1 /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4884
  • C:\Users\Admin\AppData\Local\Temp\service123.exe
    C:\Users\Admin\AppData\Local\Temp\/service123.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:812
  • C:\Users\Admin\AppData\Local\Temp\service123.exe
    C:\Users\Admin\AppData\Local\Temp\/service123.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:3104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/812-25-0x00000000005F0000-0x0000000000601000-memory.dmp

    Filesize

    68KB

  • memory/2592-15-0x00000000005F0000-0x0000000000601000-memory.dmp

    Filesize

    68KB

  • memory/2592-16-0x0000000075930000-0x0000000075A6C000-memory.dmp

    Filesize

    1.2MB

  • memory/3104-40-0x00000000005F0000-0x0000000000601000-memory.dmp

    Filesize

    68KB

  • memory/4760-0-0x0000000000400000-0x0000000001069000-memory.dmp

    Filesize

    12.4MB

  • memory/4760-1-0x0000000000400000-0x0000000001069000-memory.dmp

    Filesize

    12.4MB

  • memory/4760-13-0x0000000000400000-0x0000000001069000-memory.dmp

    Filesize

    12.4MB