Analysis

  • max time kernel
    4294181s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • 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.

  • Deletes itself 1 IoCs
  • 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 1 IoCs
  • Suspicious use of WriteProcessMemory 14 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:1668
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\05ff590ae87979f8182c32f99f0cc19eb4fe5429ad2d8b8ff8138a425ee9c829.exe
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1812
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:2000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1668-54-0x00000000753E1000-0x00000000753E3000-memory.dmp

    Filesize

    8KB

  • memory/1668-55-0x0000000076EA0000-0x0000000077020000-memory.dmp

    Filesize

    1.5MB

  • memory/1668-58-0x00000000004C0000-0x00000000004C1000-memory.dmp

    Filesize

    4KB

  • memory/1668-56-0x0000000000AE0000-0x0000000001D59000-memory.dmp

    Filesize

    18.5MB

  • memory/1668-57-0x00000000004D0000-0x00000000004D1000-memory.dmp

    Filesize

    4KB

  • memory/1668-59-0x00000000004B0000-0x00000000004B1000-memory.dmp

    Filesize

    4KB

  • memory/1668-60-0x00000000004F0000-0x00000000004F1000-memory.dmp

    Filesize

    4KB

  • memory/1668-61-0x0000000000500000-0x0000000000501000-memory.dmp

    Filesize

    4KB

  • memory/1668-62-0x0000000000510000-0x0000000000511000-memory.dmp

    Filesize

    4KB