Overview

overview

10

Static

static

3

sub_2026e97bd58d.exe

windows10-2004-x64

10

sub_2026e97bd58d.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    sub_2026e97bd58d.bin
  • Size 151KB
  • Sample260524-b8j3taew3m
  • SHA256 2026e97bd58d8848dbd55664417790d5ee804bc2fe86ad054cb6a304d2d39a6b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
buerdefense_evasiondiscoveryloaderpersistence

Malware Config

Extracted

Family

  • buer

C2

  • https://mesoplano.com/

  • https://banusle.top/

Targets

    • Target
      sub_2026e97bd58d.bin
    • Size 151KB
    • SHA256 2026e97bd58d8848dbd55664417790d5ee804bc2fe86ad054cb6a304d2d39a6b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoverybuerloaderpersistence

    • Buer Loader

      Detects Buer loader in memory or disk.

      loader

    • Family: Buer

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

      loaderbuer

    • Modifies WinLogon for persistence

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Prevents Microsoft Defender from scanning certain paths by adding an exclusion.

      Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.

      defense_evasion

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks