Analysis

  • max time kernel
    128s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    09-03-2022 13:48

General

  • Target

    05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe

  • Size

    8.4MB

  • MD5

    d7d2eeff30cbf9ddbb2a5d38d639f6f3

  • SHA1

    2a9a6339c6475219b8854bc676f0eaa14e487917

  • SHA256

    05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829

  • SHA512

    85ac22619c220cd39e3c32a786c393a0a5f02e33da220d29f9c94046e00a38cc4c70be0a5cfb193025186ffbbf965f6d98b82dada1bfe990b411e436e1138f7b

Malware Config

Signatures

  • Taurus Stealer

    Taurus is an infostealer first seen in June 2020.

  • Taurus Stealer Payload 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • 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 2FA software files, 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe
    "C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe"
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4560
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4540
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:3404

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/4560-130-0x0000000077BB0000-0x0000000077D53000-memory.dmp

    Filesize

    1.6MB

  • memory/4560-131-0x0000000000F70000-0x00000000021E9000-memory.dmp

    Filesize

    18.5MB

  • memory/4560-132-0x0000000003800000-0x0000000003801000-memory.dmp

    Filesize

    4KB

  • memory/4560-133-0x0000000003810000-0x0000000003811000-memory.dmp

    Filesize

    4KB