Analysis

  • max time kernel
    142s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25-09-2024 19:37

General

  • Target

    channel3.exe

  • Size

    6.3MB

  • MD5

    eee6d15917d8a9aa01288580d8cb5541

  • SHA1

    7827d50eab278625ce256d7ec5568a82b8c9edfe

  • SHA256

    3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7

  • SHA512

    68647cad68930d344675bb30a11a7b18b8a59a83c2958f2b4b68d9e8adc3b95bf403a8e00c76a3db889bedf6f6742b6c05081e8ba5e5f77bb71646a959c40571

  • SSDEEP

    98304:+HwhEenyWS9+46B3fgDmQ9NQVapitqG6OmblZLan:6cEcHl4Gv2N0akEG6L5Van

Malware Config

Extracted

Family

cryptbot

C2

thirtvf13sr.top

Attributes
  • url_path

    /v1/upload.php

Signatures

  • CryptBot

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 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 2 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 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\channel3.exe
    "C:\Users\Admin\AppData\Local\Temp\channel3.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Users\Admin\AppData\Local\Temp\service123.exe
      "C:\Users\Admin\AppData\Local\Temp\service123.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2276
    • 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:2872
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {52B67B2F-50E5-486E-B2B7-187E08355860} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2600
    • C:\Users\Admin\AppData\Local\Temp\service123.exe
      C:\Users\Admin\AppData\Local\Temp\/service123.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2320
    • C:\Users\Admin\AppData\Local\Temp\service123.exe
      C:\Users\Admin\AppData\Local\Temp\/service123.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1016

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1016-34-0x0000000000CF0000-0x0000000000D01000-memory.dmp

    Filesize

    68KB

  • memory/2276-20-0x0000000000CF0000-0x0000000000D01000-memory.dmp

    Filesize

    68KB

  • memory/2276-21-0x0000000074910000-0x0000000074A3C000-memory.dmp

    Filesize

    1.2MB

  • memory/2320-19-0x0000000000CF0000-0x0000000000D01000-memory.dmp

    Filesize

    68KB

  • memory/2516-0-0x0000000000400000-0x000000000105E000-memory.dmp

    Filesize

    12.4MB

  • memory/2516-1-0x0000000000400000-0x000000000105E000-memory.dmp

    Filesize

    12.4MB

  • memory/2516-13-0x0000000000400000-0x000000000105E000-memory.dmp

    Filesize

    12.4MB