Overview

overview

10

Static

static

90fb9834e4...c1.exe

windows7_x64

10

90fb9834e4...c1.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    26/03/2022, 18:05

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General

  • Target
    90fb9834e4ef951fa583996ec229f7597508018912a24381af66c6f26667cdc1.exe
  • Size 861KB
  • Sample220326-wn6fjacbbn
  • SHA256 90fb9834e4ef951fa583996ec229f7597508018912a24381af66c6f26667cdc1
  • MD5 SHA1 SHA512
Score
10/10
taurusdiscoveryevasionspywarestealertrojan

Malware Config

Signatures

  • Taurus Stealer

    Taurus is an infostealer first seen in June 2020.

    trojanstealertaurus
  • Taurus Stealer Payload 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • 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.

    evasion
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
    spywarestealer
  • Checks installed software on the system 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\90fb9834e4ef951fa583996ec229f7597508018912a24381af66c6f26667cdc1.exe
    "C:\Users\Admin\AppData\Local\Temp\90fb9834e4ef951fa583996ec229f7597508018912a24381af66c6f26667cdc1.exe"
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\90fb9834e4ef951fa583996ec229f7597508018912a24381af66c6f26667cdc1.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1328
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:4640

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1460-130-0x0000000077980000-0x0000000077B23000-memory.dmp
        Download

        memory/1460-131-0x0000000000190000-0x000000000035F000-memory.dmp
        Download