Analysis

  • max time kernel
    153s
  • max time network
    163s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25/06/2022, 09:46

General

  • Target

    b2a7a30663a651308964f1eaa1d1a5270b31caa343749700b2891bd81f2b3d82.exe

  • Size

    2.1MB

  • MD5

    928e9694e9d79981dc99ee051356f85c

  • SHA1

    988a054a9c5efec38d43d409a7fad36e88efefde

  • SHA256

    b2a7a30663a651308964f1eaa1d1a5270b31caa343749700b2891bd81f2b3d82

  • SHA512

    eafcc0d643b5c95f235697e7934de2b4dab2fa5a512f24682a272f7510f9ee64245ba1b5729274b03d0ed722e58ddc99acffe05489b4b01f52803dad1f8bc3b6

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 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b2a7a30663a651308964f1eaa1d1a5270b31caa343749700b2891bd81f2b3d82.exe
    "C:\Users\Admin\AppData\Local\Temp\b2a7a30663a651308964f1eaa1d1a5270b31caa343749700b2891bd81f2b3d82.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:1704

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1704-54-0x0000000000400000-0x00000000008FC000-memory.dmp

    Filesize

    5.0MB

  • memory/1704-55-0x0000000076241000-0x0000000076243000-memory.dmp

    Filesize

    8KB

  • memory/1704-56-0x0000000077650000-0x00000000777D0000-memory.dmp

    Filesize

    1.5MB

  • memory/1704-57-0x0000000000400000-0x00000000008FC000-memory.dmp

    Filesize

    5.0MB

  • memory/1704-58-0x0000000000400000-0x00000000008FC000-memory.dmp

    Filesize

    5.0MB

  • memory/1704-59-0x0000000077650000-0x00000000777D0000-memory.dmp

    Filesize

    1.5MB

  • memory/1704-60-0x0000000000400000-0x00000000008FC000-memory.dmp

    Filesize

    5.0MB

  • memory/1704-61-0x00000000742D1000-0x00000000742D3000-memory.dmp

    Filesize

    8KB