Overview

overview

10

Static

static

10

BluStealer...4c.exe

windows7_x64

10

BluStealer...4c.exe

windows10_x64

10

Analysis

  • max time kernel
    147s
  • max time network
    37s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    15-10-2021 15:10

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General

  • Target

    BluStealer_2466fca0e29b06c78ffa8a44193fb58c30e6bec4e54bbef8e6622349b95cce4c.exe

  • Size

    79KB

  • MD5

    f1c260c31b9d3f9ff54a142d508ec602

  • SHA1

    6b25c80e8b2dca94ea6b6a95745a496ec0bcabd3

  • SHA256

    2466fca0e29b06c78ffa8a44193fb58c30e6bec4e54bbef8e6622349b95cce4c

  • SHA512

    9412a185d008ded02e2061cd4e998222071923f6260ecdcc9a3f1969ea2aa89a9493866e13450d82b8ab390ec78b24d7ba82a6e2618d11cf27d67f43a7d39d6a

Score
10/10
blackmatterransomwaresuricata

Malware Config

Extracted

Path

C:\chkvc3MvG.README.txt

Family

blackmatter

Ransom Note
~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> What happens? Your security perimeter was BREACHED and all files on your critically important servers and hosts were completely ENCRYPTED. Also we has DOWNLOADED your most SENSITIVE Data We have collected the most important info such as: -Accounting files, Financial documents, Banking and Billing statements, HR documents, Payrolls, Credit Cards -We have your Backups, Legal Documents, Personal IDs, Investigations Reports, Audit Reports, Revenues reports -Confidential Agreements, NDA, Corporate Contracts, WorkFiles, Drawings, Clients and Employees contacts and other personal information -Also we have your Private Correspondence .msg files and a lot of other Sensitive info. https://prnt.sc/1o6e5a2 https://prnt.sc/1o6ei7g https://prnt.sc/1o6exr8 https://prnt.sc/1o6fbxu https://prnt.sc/1o6fvkn >>> What data stolen? From your network was stolen 80 GB of data. If you do not contact us we will publish all your data in our blog and will send it to the biggest mass media. Blog post link: %BLOG_URL% >>> What guarantees? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters or we do not delete your data, no one will pay us in the future, this does not comply with our goals. We always keep our promises. >> How to contact with us? 1. Download and install TOR Browser (https://www.torproject.org/). 2. Open http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/EBVCVJNCPM6A3NKJ >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

https://prnt.sc/1o6e5a2

https://prnt.sc/1o6ei7g

https://prnt.sc/1o6exr8

https://prnt.sc/1o6fbxu

https://prnt.sc/1o6fvkn

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/EBVCVJNCPM6A3NKJ

Signatures

  • BlackMatter Ransomware

    BlackMatter ransomware group claims to be Darkside and REvil succesor.

    ransomwareblackmatter
  • suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)

    suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)

    suricata
  • Modifies extensions of user files 15 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Control Panel 3 IoCs
    evasion
  • Modifies registry class 20 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BluStealer_2466fca0e29b06c78ffa8a44193fb58c30e6bec4e54bbef8e6622349b95cce4c.exe
    "C:\Users\Admin\AppData\Local\Temp\BluStealer_2466fca0e29b06c78ffa8a44193fb58c30e6bec4e54bbef8e6622349b95cce4c.exe"
    1⤵
    • Modifies extensions of user files
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" /p C:\chkvc3MvG.README.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:1480
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:788

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1268-54-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1268-56-0x0000000000A20000-0x0000000000A21000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1268-55-0x0000000000A25000-0x0000000000A36000-memory.dmp

    Filesize

    68KB

    Download

  • memory/1268-57-0x0000000000A36000-0x0000000000A37000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1480-62-0x000007FEFB891000-0x000007FEFB893000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1480-63-0x0000000004140000-0x0000000004141000-memory.dmp

    Filesize

    4KB

    Download