Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26/03/2025, 07:00

General

  • Target

    131d6fb9204ceda508075afce9b9b65e429952674e914d224268deb319a0aab1.exe

  • Size

    305KB

  • MD5

    4309f4b4bb455f998d1fdf310cd83484

  • SHA1

    4ee10072d4dff28efcd64d8dcd631760868d644b

  • SHA256

    131d6fb9204ceda508075afce9b9b65e429952674e914d224268deb319a0aab1

  • SHA512

    3d730ec6e3b385a69fa62634f4776e98327bc8f5da6330b109d3de5b37339dcb97cf9bf489c548de23f6ff71b115e921d5179cf2606eba61783851462ba807bf

  • SSDEEP

    6144:zWmk/wokUNpuDoAVUx99rpABXHxjdgwJids6m+8suhyiP:NswuNpQv299rpAVHxJgw0dsp+dTiP

Malware Config

Extracted

Family

cryptbot

C2

befqlo52.top

mortos05.top

Attributes
  • payload_url

    http://mincir07.top/download.php?file=lv.exe

Signatures

  • CryptBot

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

  • Cryptbot family
  • Deletes itself 1 IoCs
  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\131d6fb9204ceda508075afce9b9b65e429952674e914d224268deb319a0aab1.exe
    "C:\Users\Admin\AppData\Local\Temp\131d6fb9204ceda508075afce9b9b65e429952674e914d224268deb319a0aab1.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\tynjWwCwjLac & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\131d6fb9204ceda508075afce9b9b65e429952674e914d224268deb319a0aab1.exe"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2524
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3012-2-0x0000000000220000-0x0000000000265000-memory.dmp

    Filesize

    276KB

  • memory/3012-1-0x0000000002D40000-0x0000000002E40000-memory.dmp

    Filesize

    1024KB

  • memory/3012-3-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3012-6-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3012-5-0x0000000000220000-0x0000000000265000-memory.dmp

    Filesize

    276KB

  • memory/3012-4-0x0000000000400000-0x0000000002B8C000-memory.dmp

    Filesize

    39.5MB