Overview

overview

10

Static

static

10

d4647619fa...le.exe

windows7_x64

10

d4647619fa...le.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-en-20210916
  • submitted
    20-09-2021 12:44

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General

  • Target

    d4647619fa2dc8fef5560d1662cbee6eb7dc95298dd40edf12dd4c8ee902d767.bin.sample.exe

  • Size

    79KB

  • MD5

    2c4a733c7eb5b67e02046345d844879d

  • SHA1

    a975d15879946ee827be5a5f7ffcf5bc60c93d71

  • SHA256

    d4647619fa2dc8fef5560d1662cbee6eb7dc95298dd40edf12dd4c8ee902d767

  • SHA512

    6d3f8f111752fa722a02f231b5d40edc19d14dccf26c32ebb9fe1fde5e4e889a2562c9049476679a18dafaddaf0287e5ba2dff7ef9055a31f36eeeb41019025c

Score
10/10
blackmatterransomware

Malware Config

Extracted

Path

C:\SykSKioSK.README.txt

Family

blackmatter

Ransom Note
~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> What happens? Your network is encrypted, and currently not operational. We need only money, after payment we will give you a decryptor for the entire network and you will restore all the data. >>> What data stolen? From your network was stolen 250 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: http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/YdWh7oMKjT/13f1a8efc53e2fa712813f4c39147a79 >>> 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/5AZHJFLKJNPOJ4F5O5T >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/YdWh7oMKjT/13f1a8efc53e2fa712813f4c39147a79

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/5AZHJFLKJNPOJ4F5O5T

Signatures

  • BlackMatter Ransomware

    BlackMatter ransomware group claims to be Darkside and REvil succesor.

    ransomwareblackmatter
  • Modifies extensions of user files 7 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 9 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d4647619fa2dc8fef5560d1662cbee6eb7dc95298dd40edf12dd4c8ee902d767.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\d4647619fa2dc8fef5560d1662cbee6eb7dc95298dd40edf12dd4c8ee902d767.bin.sample.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:980
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" /p C:\SykSKioSK.README.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      • Suspicious use of WriteProcessMemory
      PID:580
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:824
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1376

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/824-61-0x000007FEFC031000-0x000007FEFC033000-memory.dmp

    Filesize

    8KB

    Download

  • memory/824-64-0x0000000004260000-0x0000000004261000-memory.dmp

    Filesize

    4KB

    Download

  • memory/980-53-0x0000000076921000-0x0000000076923000-memory.dmp

    Filesize

    8KB

    Download

  • memory/980-55-0x00000000003F0000-0x00000000003F1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/980-56-0x0000000000406000-0x0000000000407000-memory.dmp

    Filesize

    4KB

    Download

  • memory/980-54-0x00000000003F5000-0x0000000000406000-memory.dmp

    Filesize

    68KB

    Download