Overview

overview

10

Static

static

10

f7b3da61cb...le.exe

windows7_x64

10

f7b3da61cb...le.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    64s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    21-09-2021 13:19

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General

  • Target

    f7b3da61cb6a37569270554776dbbd1406d7203718c0419c922aa393c07e9884.bin.sample.exe

  • Size

    78KB

  • MD5

    ead753c057b5c3888ed2484013400b82

  • SHA1

    e7de753b9f1e4e771f51f9dc044628288ea831bd

  • SHA256

    f7b3da61cb6a37569270554776dbbd1406d7203718c0419c922aa393c07e9884

  • SHA512

    fd6e2a1ddc79d313b12f84f1df91d45b3972b825e153dfc62fd02d4fb9af72c4a0d1d05fcd141ab21232c7e72c0571562533c418bff7233206c89309f623b564

Score
10/10
blackmatterransomware

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 750 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/xscSyb9oue/b2ec5065190ebe423b201a9f2af97bb7 >>> 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://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/OR7OTLBK8D5UVHZ0Q >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/xscSyb9oue/b2ec5065190ebe423b201a9f2af97bb7

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/OR7OTLBK8D5UVHZ0Q

Signatures

  • BlackMatter Ransomware

    BlackMatter ransomware group claims to be Darkside and REvil succesor.

    ransomwareblackmatter
  • 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 5 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f7b3da61cb6a37569270554776dbbd1406d7203718c0419c922aa393c07e9884.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\f7b3da61cb6a37569270554776dbbd1406d7203718c0419c922aa393c07e9884.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:760
    • 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:1056
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:1608
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1852

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/760-59-0x0000000075051000-0x0000000075053000-memory.dmp

    Filesize

    8KB

    Download

  • memory/760-60-0x0000000001CE5000-0x0000000001CF6000-memory.dmp

    Filesize

    68KB

    Download

  • memory/760-61-0x0000000001CE0000-0x0000000001CE1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/760-62-0x0000000001CF6000-0x0000000001CF7000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1608-67-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1608-68-0x00000000042C0000-0x00000000042C1000-memory.dmp

    Filesize

    4KB

    Download