Analysis

  • max time kernel
    156s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-04-2023 08:52

General

  • Target

    Setup.exe

  • Size

    376MB

  • MD5

    38eb2b2611ed105e0a1bb9e331abb038

  • SHA1

    fa05ff8ecca6a42e15e1218c423316a7cad3674a

  • SHA256

    08e4f43424b6845ea482ac01d1094d883a1d18b631669a4d9627c77dbf7acf76

  • SHA512

    e33128a3f516c6dc903850090b546f764182a46f38563faf57029e861ae165ce45ca713c99d26a16d6cc1e3ae0d6e7c3e2c990d3b7f2a393d12243b72aa7a3a8

  • SSDEEP

    49152:XToqRjktHN+cEUoqJCCudWoCoRXb2YP4Fu7iHeCNVrMqaXsd4AC:jTRAB7Ci5OXb2YP4Fu7+eCNVwqxd4AC

Malware Config

Signatures

  • BlueFox

    BlueFox is an infostealer written in C# and first seen in December 2021.

  • BlueFox Stealer payload 3 IoCs
  • 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.

  • Themida packer 3 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:536

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/536-133-0x0000000000960000-0x0000000000F43000-memory.dmp
    Filesize

    5MB

  • memory/536-134-0x0000000000960000-0x0000000000F43000-memory.dmp
    Filesize

    5MB

  • memory/536-135-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-136-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-137-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-138-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-139-0x0000000000960000-0x0000000000F43000-memory.dmp
    Filesize

    5MB

  • memory/536-140-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-141-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-142-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-143-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB

  • memory/536-144-0x0000000001480000-0x0000000001490000-memory.dmp
    Filesize

    64KB