Overview

overview

10

Static

static

99ecaff6fe...22.exe

windows7_x64

10

99ecaff6fe...22.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    45s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-06-2022 11:17

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General

  • Target

    99ecaff6fefedf3b7b7d6d0dba4d15c55ca1a7d57a19e04c38908f02a1f9ca22.exe

  • Size

    1.6MB

  • MD5

    5b89932d8f9f7806c66141203042ea1b

  • SHA1

    dd38e9b111a3581217c8aa9ccc80d4d838a20ea7

  • SHA256

    99ecaff6fefedf3b7b7d6d0dba4d15c55ca1a7d57a19e04c38908f02a1f9ca22

  • SHA512

    69b5d0191a294fba020d4e354b37c13d4d39c65904013be636c7b9b02bec29a7f7027446d5f513db32a31c75f01955ba97e01927660d936e6878101a732797bc

Score
10/10
buerevasionloader

Malware Config

Extracted

Family

buer

C2

http://kload01.info/

http://kload02.info/

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

    loaderbuer
  • Buer Loader 2 IoCs

    Detects Buer loader in memory or disk.

    loader
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
    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
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99ecaff6fefedf3b7b7d6d0dba4d15c55ca1a7d57a19e04c38908f02a1f9ca22.exe
    "C:\Users\Admin\AppData\Local\Temp\99ecaff6fefedf3b7b7d6d0dba4d15c55ca1a7d57a19e04c38908f02a1f9ca22.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
    • Suspicious behavior: EnumeratesProcesses
    PID:852

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/852-54-0x000000003F970000-0x000000003FDAB000-memory.dmp

    Filesize

    4.2MB

    Download

  • memory/852-55-0x0000000077AF0000-0x0000000077C70000-memory.dmp

    Filesize

    1.5MB

    Download

  • memory/852-56-0x000000003F970000-0x000000003FDAB000-memory.dmp

    Filesize

    4.2MB

    Download