Overview

overview

10

Static

static

10

sub_13828b390d5f.exe

windows10-2004-x64

10

sub_13828b390d5f.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    sub_13828b390d5f.bin
  • Size 2.9MB
  • Sample260524-byf86sg151
  • SHA256 13828b390d5f58b002e808c2c4f02fdd920e236cc8015480fa33b6c1a9300e31
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
ransomwareblackcat

Malware Config

Extracted

Family

  • blackcat

Credentials
  • Username

    NANOFOCUS.LOCAL\Administrator
  • Password

    368CkbIna?#
Attributes
  • enable_network_discovery

    true

  • enable_self_propagation

    true

  • enable_set_wallpaper

    true

  • extension

    mfqssdj

  • note_file_name

    RECOVER-${EXTENSION}-FILES.txt

  • note_full_text

    >> What happened? Important files on your network was ENCRYPTED and now they have "${EXTENSION}" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED. If you DON'T WANT your sensitive data to be PUBLISHED you have to act quickly. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Private financial information including: clients data, bills, budgets, annual reports, bank statements. - Manufacturing documents including: datagrams, schemas, drawings in solidworks format. - Source code. -And more... >> CAUTION DO NOT MODIFY ENCRYPTED FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. >> What should I do next? Follow these simple steps to get everything back to normal: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://b4twqa2mvob3s6uvuyfra5xk3qgps2v5kkt7k2qnb7rpdu3j4fkntead.onion/?access-key=${ACCESS_KEY}

rsa_pubkey.plain

Signatures

  • Family: BlackCat

    A Rust-based ransomware sold as RaaS first seen in late 2021.

    ransomwareblackcat
  • Unsigned PE 1 IoCs

    Checks for missing Authenticode signature.

File Explorer

  • sub_13828b390d5f.bin
    .exe 2.9MB

sub_13828b390d5f.bin

  • IMPHASH 55c1bce75ad836c886b7fb6bca398063
  • SHA256 13828b390d5f58b002e808c2c4f02fdd920e236cc8015480fa33b6c1a9300e31
  • MD5 SHA1 SHA512 SSDEEP TLSH
windows:4windowsx86arch:x86

  • Unsigned PE

    Checks for missing Authenticode signature.

Minor OS version
0
Major OS version
4
Entry point
5312
Magic Number
267
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_DEBUG_STRIPPED
PDB paths