Overview

overview

10

Static

static

10

2cdb5edf30...le.exe

windows7_x64

10

2cdb5edf30...le.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-en-20210916
  • submitted
    20-09-2021 12:45

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General

  • Target

    2cdb5edf3039863c30818ca34d9240cb0068ad33128895500721bcdca70c78fd.bin.sample.exe

  • Size

    78KB

  • MD5

    6e5986761cea340dce2efd4cf4f3790c

  • SHA1

    4a8ca4b5c04112a753e9ff5989b80f0b12e13654

  • SHA256

    2cdb5edf3039863c30818ca34d9240cb0068ad33128895500721bcdca70c78fd

  • SHA512

    8df4406a8807978df8690cb578cd00f8d22c2ad5ff78b8d87806484adcde2eaa2901f1da100c31f1538da0503043c78cb3856d0592af2f094901d864956b83af

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 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/GBSLNRB4NL0OG6FX >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/GBSLNRB4NL0OG6FX

Signatures

  • BlackMatter Ransomware

    BlackMatter ransomware group claims to be Darkside and REvil succesor.

    ransomwareblackmatter
  • Modifies extensions of user files 13 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Loads dropped DLL 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Drops file in Program Files directory 64 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 10 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\2cdb5edf3039863c30818ca34d9240cb0068ad33128895500721bcdca70c78fd.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\2cdb5edf3039863c30818ca34d9240cb0068ad33128895500721bcdca70c78fd.bin.sample.exe"
    1⤵
    • Modifies extensions of user files
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:580
    • 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:1748
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Loads dropped DLL
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:1848
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:536

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/580-54-0x00000000758C1000-0x00000000758C3000-memory.dmp

    Filesize

    8KB

    Download

  • memory/580-55-0x00000000004B5000-0x00000000004C6000-memory.dmp

    Filesize

    68KB

    Download

  • memory/580-56-0x00000000004B0000-0x00000000004B1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/580-57-0x00000000004C6000-0x00000000004C7000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1848-62-0x000007FEFB981000-0x000007FEFB983000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1848-64-0x0000000004150000-0x0000000004151000-memory.dmp

    Filesize

    4KB

    Download