Overview

overview

9

Static

static

3

BKNnjrK3Oe.exe

windows10-2004-x64

9

BKNnjrK3Oe.exe

windows11-ltsc_2024-x64

1

Sharing

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General

  • Target
    BKNnjrK3Oe.exe
  • Size 13.5MB
  • Sample261027-nnn79add37
  • SHA256 761878d9a4e62168b2f75a8ccbc688d0a9bef00439518217263c3fa4d1431b44
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
defense_evasiondiscoverypersistenceransomwarespywaretrojan

Malware Config

Targets

    • Target
      BKNnjrK3Oe.exe
    • Size 13.5MB
    • SHA256 761878d9a4e62168b2f75a8ccbc688d0a9bef00439518217263c3fa4d1431b44
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    defense_evasiondiscoverypersistenceransomwarespywaretrojan

    • Renames multiple (6105) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

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

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks