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
    27-09-2024 22:08

General

  • Target

    Set-up.exe

  • Size

    6.3MB

  • MD5

    ff8b81c5bdbb09987a4ed216ae0010c2

  • SHA1

    1d5edf417a676e8e04a69dd94dac6a2a934cdfa6

  • SHA256

    d6a055bee4a39f5879ff522099df86cd0a0001228cac589b3f07449a5a822fef

  • SHA512

    9bad1fed2170e923e65f57e8ccbbfbe33fd8f01423469fa8e3d7a4c93c8c97fb84ea98df33901a11fdf8915dc7d9955046faf5c4f9ccf38d8606ccc2b91615fe

  • SSDEEP

    49152:4pVubXslypSy5wT96CHhbhiwOfHLaorKt5LJ8Vx2jaV9hIaDzNZMV/tIsQ:/jazH7iwOf/rKt38VC49hIMrMH5Q

Malware Config

Extracted

Family

cryptbot

C2

twelvevh12pt.top

Attributes
  • url_path

    /v1/upload.php

Signatures

  • CryptBot

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

  • 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 3 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\Set-up.exe
    "C:\Users\Admin\AppData\Local\Temp\Set-up.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2948
    • 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:4588
    • 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:5004
  • C:\Users\Admin\AppData\Local\Temp\service123.exe
    C:\Users\Admin\AppData\Local\Temp\/service123.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:2360
  • C:\Users\Admin\AppData\Local\Temp\service123.exe
    C:\Users\Admin\AppData\Local\Temp\/service123.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:2960

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2360-21-0x0000000000430000-0x0000000000441000-memory.dmp

    Filesize

    68KB

  • memory/2948-0-0x0000000000400000-0x000000000105E000-memory.dmp

    Filesize

    12.4MB

  • memory/2948-1-0x0000000000400000-0x000000000105E000-memory.dmp

    Filesize

    12.4MB

  • memory/2948-13-0x0000000000400000-0x000000000105E000-memory.dmp

    Filesize

    12.4MB

  • memory/2960-36-0x0000000000430000-0x0000000000441000-memory.dmp

    Filesize

    68KB

  • memory/4588-15-0x0000000000430000-0x0000000000441000-memory.dmp

    Filesize

    68KB

  • memory/4588-16-0x00000000750B0000-0x00000000751DC000-memory.dmp

    Filesize

    1.2MB