Overview

overview

10

Static

static

10

3a4bd5288b...40.exe

windows7_x64

10

3a4bd5288b...40.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    64s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    05-10-2021 10:29

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General

  • Target

    3a4bd5288b89aa26fbe39353b93c1205efa671be4f96e50beae0965f45fdcc40.exe

  • Size

    79KB

  • MD5

    35aaa2a2208956d1b8752954722ff76d

  • SHA1

    fccda267f03d8dcd815f662f0fdc1e18e9fd4be3

  • SHA256

    3a4bd5288b89aa26fbe39353b93c1205efa671be4f96e50beae0965f45fdcc40

  • SHA512

    25cca12fd228932402aa4ee3f88f1d1db45ff8167aa4a260ecc1d1911f500c239a9d0465547974abfa3ed6f330a4654932df0fa820b8bcd9c9acfb99ccbcb1e3

Score
10/10
blackmatterransomwaresuricata

Malware Config

Extracted

Path

C:\1rWCqamCt.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 sensitive 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. >>> 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/D4MX4VGFCMO7MFQ6P >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/D4MX4VGFCMO7MFQ6P

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

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

    suricata
  • Modifies extensions of user files 16 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\3a4bd5288b89aa26fbe39353b93c1205efa671be4f96e50beae0965f45fdcc40.exe
    "C:\Users\Admin\AppData\Local\Temp\3a4bd5288b89aa26fbe39353b93c1205efa671be4f96e50beae0965f45fdcc40.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:1968
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" /p C:\1rWCqamCt.README.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:1456
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:268

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1456-67-0x000007FEFC051000-0x000007FEFC053000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1456-68-0x0000000004150000-0x0000000004151000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1968-59-0x00000000767B1000-0x00000000767B3000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1968-60-0x0000000000875000-0x0000000000886000-memory.dmp

    Filesize

    68KB

    Download

  • memory/1968-61-0x0000000000870000-0x0000000000871000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1968-62-0x0000000000886000-0x0000000000887000-memory.dmp

    Filesize

    4KB

    Download