Analysis

  • max time kernel
    150s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-09-2024 07:53

General

  • Target

    joffer2.exe

  • Size

    6.3MB

  • MD5

    5f1dffeff8714e88b493506256db8f8a

  • SHA1

    d554da350b41da8556ce83ed851b975d2325a3d2

  • SHA256

    e372a2d6ea5d76b0ffbccfa5b6574b910826fb5b5998e8e5cc4dcd49f6dffff0

  • SHA512

    4bf57a4af1514111e301f8a1c8f3e2c145d078ba45a94edb71af6b1f9ca6dcfb3bd35d5114936f5c97ab4b1561b7b5afd4bfcc6d37b2f39b3aca0c96e0b28960

  • SSDEEP

    98304:/kmQ1cFviCNsYDiw7qVJ0K9hh/oHvC59i0ife:/kmQGviCbijV2Krhw65Upfe

Malware Config

Extracted

Family

cryptbot

C2

sevtv17sb.top

analforeverlovyu.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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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\joffer2.exe
    "C:\Users\Admin\AppData\Local\Temp\joffer2.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:552
    • 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:1944
    • 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:4496
  • C:\Users\Admin\AppData\Local\Temp\service123.exe
    C:\Users\Admin\AppData\Local\Temp\/service123.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:4348
  • C:\Users\Admin\AppData\Local\Temp\service123.exe
    C:\Users\Admin\AppData\Local\Temp\/service123.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:3976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/552-0-0x0000000000400000-0x0000000001066000-memory.dmp

    Filesize

    12.4MB

  • memory/552-1-0x0000000000400000-0x0000000001066000-memory.dmp

    Filesize

    12.4MB

  • memory/552-13-0x0000000000400000-0x0000000001066000-memory.dmp

    Filesize

    12.4MB

  • memory/1944-15-0x0000000000560000-0x0000000000571000-memory.dmp

    Filesize

    68KB

  • memory/1944-16-0x0000000075A80000-0x0000000075BBC000-memory.dmp

    Filesize

    1.2MB

  • memory/3976-34-0x0000000000560000-0x0000000000571000-memory.dmp

    Filesize

    68KB

  • memory/4348-19-0x0000000000560000-0x0000000000571000-memory.dmp

    Filesize

    68KB