Resubmissions

29-09-2023 00:39

230929-az1hrsfa6t 10

29-09-2023 00:33

230929-awbegagd47 10

Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    29-09-2023 00:33

General

  • Target

    0c6f444c6940a3688ffc6f8b9d5774c032e3551ebbccb64e4280ae7fc1fac479.exe

  • Size

    2.6MB

  • MD5

    bb266486ee8ac70c0687989e02cefa14

  • SHA1

    11203786b17bb3873d46acae32a898c8dac09850

  • SHA256

    0c6f444c6940a3688ffc6f8b9d5774c032e3551ebbccb64e4280ae7fc1fac479

  • SHA512

    a167779fc95a5cf0a3eff86211e9e08c282470e050b17ae62c7499a82ea59b3447446eafea9d7b5c5ba833b7a2d060f76530b00509dd5ff7904a0735d83e14c4

  • SSDEEP

    49152:rEqvaaAjc2hdKjb8WXqE1PiEbE/TKMt3/RgaJ2wW4PRT8O1:rbyaALKjwWXV1P9oVvwwW4JT8

Score
10/10

Malware Config

Extracted

Family

blackcat

Credentials
  • Username:
    KELLERSUPPLY\Administrator
  • Password:
    d@gw00d
  • Username:
    KELLERSUPPLY\AdminRecovery
  • Password:
    K3ller!$Supp1y
  • Username:
    .\Administrator
  • Password:
    d@gw00d
  • Username:
    .\Administrator
  • Password:
    K3ller!$Supp1y
Attributes
  • enable_network_discovery

    true

  • enable_self_propagation

    false

  • enable_set_wallpaper

    true

  • extension

    sykffle

  • note_file_name

    RECOVER-${EXTENSION}-FILES.txt

  • note_full_text

    >> Introduction Important files on your system was ENCRYPTED and now they have have "${EXTENSION}" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED and it will be PUBLISHED if you refuse to cooperate. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Financial information including clients data, bills, budgets, annual reports, bank statements. - Complete datagrams/schemas/drawings for manufacturing in solidworks format - And more... Private preview is published here: http://zujgzbu5y64xbmvc42addp4lxkoosb4tslf5mehnh7pvqjpwxn5gokyd.onion/b21e1fb6-ff88-425b-8339-3523179a1e3e/886cf430a907bbe9a3fd38fb704d524dbd199c1b042ad6f65dc72ad78704e21 >> CAUTION DO NOT MODIFY FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. YOUR DATA IS STRONGLY ENCRYPTED, YOU CAN NOT DECRYPT IT WITHOUT CIPHER KEY. >> Recovery procedure Follow these simple steps to get in touch and recover your data: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://mu75ltv3lxd24dbyu6gtvmnwybecigs5auki7fces437xvvflzva2nqd.onion/?access-key=${ACCESS_KEY}

rsa_pubkey.plain

Signatures

  • BlackCat

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

  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0c6f444c6940a3688ffc6f8b9d5774c032e3551ebbccb64e4280ae7fc1fac479.exe
    "C:\Users\Admin\AppData\Local\Temp\0c6f444c6940a3688ffc6f8b9d5774c032e3551ebbccb64e4280ae7fc1fac479.exe"
    1⤵
      PID:1728
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\WaitResolve.txt
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:2076
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\Desktop\DisconnectSkip.rtf"
      1⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:2684
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:3008
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x4f4
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1460

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

        Filesize

        20KB

        MD5

        1a729206d6125a249d2f8bd606e39a54

        SHA1

        09f17b279e4e3f0a86e160c59bbe7bf1be583bb9

        SHA256

        b6fe7428cf0c6bca0fcf553a73960e7e91b05bdb7cda49c970f1b8761d579cdd

        SHA512

        4ced97620eabd2f55e5a6058651a3831d613086f94fd2ab9a66a0e476aa6db769fc1c493dd51f30e0c6f19c6bd05157e55cd06d321fe7875fe15841848e151dc

      • memory/1728-0-0x0000000000400000-0x00000000006C7000-memory.dmp

        Filesize

        2.8MB

      • memory/1728-1-0x0000000000400000-0x00000000006C7000-memory.dmp

        Filesize

        2.8MB

      • memory/1728-2-0x0000000000400000-0x00000000006C7000-memory.dmp

        Filesize

        2.8MB

      • memory/2684-3-0x000000002F561000-0x000000002F562000-memory.dmp

        Filesize

        4KB

      • memory/2684-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/2684-5-0x000000007198D000-0x0000000071998000-memory.dmp

        Filesize

        44KB

      • memory/2684-21-0x000000007198D000-0x0000000071998000-memory.dmp

        Filesize

        44KB

      • memory/2684-37-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/2684-38-0x000000007198D000-0x0000000071998000-memory.dmp

        Filesize

        44KB