Analysis

  • max time kernel
    153s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25/06/2022, 09:45

General

  • Target

    81db3923268165f06426206501bd2a243069c073b20bd197a7ae5641ad8f0873.exe

  • Size

    2.2MB

  • MD5

    f3717401099468a51ea49a7b2dda9011

  • SHA1

    8a356d95eaf6a168890486d6061a231280eba547

  • SHA256

    81db3923268165f06426206501bd2a243069c073b20bd197a7ae5641ad8f0873

  • SHA512

    446690a2685317c052d8de8ec58fd392dca55c89c189d5c231e864b05f2adf58e1845ad063fce32072890857c42e58469051642ca7e900bf1e93b07c996bd03c

Malware Config

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81db3923268165f06426206501bd2a243069c073b20bd197a7ae5641ad8f0873.exe
    "C:\Users\Admin\AppData\Local\Temp\81db3923268165f06426206501bd2a243069c073b20bd197a7ae5641ad8f0873.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    PID:4788

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/4788-130-0x0000000000590000-0x0000000000ADC000-memory.dmp

    Filesize

    5.3MB

  • memory/4788-131-0x00000000773A0000-0x0000000077543000-memory.dmp

    Filesize

    1.6MB

  • memory/4788-132-0x0000000000590000-0x0000000000ADC000-memory.dmp

    Filesize

    5.3MB

  • memory/4788-133-0x0000000000590000-0x0000000000ADC000-memory.dmp

    Filesize

    5.3MB

  • memory/4788-134-0x00000000773A0000-0x0000000077543000-memory.dmp

    Filesize

    1.6MB

  • memory/4788-135-0x0000000000590000-0x0000000000ADC000-memory.dmp

    Filesize

    5.3MB