Analysis

  • max time kernel
    122s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    22-11-2021 13:14

General

  • Target

    20742987e6f743814b25e214f8b2cd43111e2f60a8856a6cca87cafd85422f41.exe

  • Size

    78KB

  • MD5

    7b125a148ce0e0c126b95395dbf02b0e

  • SHA1

    778f954480ca76029109fd6bf34904bfb1109e84

  • SHA256

    20742987e6f743814b25e214f8b2cd43111e2f60a8856a6cca87cafd85422f41

  • SHA512

    daaeb7e228a3d5c7717c58287539902e79215d9795dcb1459213f7d515392f53f16ac2f0d455e635e89addd321f4f68ccdad9f5af60f8f4d1759b7ddf5409cf9

Malware Config

Extracted

Path

C:\WRLMMTHME.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 50 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://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/LEOYRMQLSRHFGFGYWF2T5 >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/LEOYRMQLSRHFGFGYWF2T5

Signatures

  • BlackMatter Ransomware

    BlackMatter ransomware group claims to be Darkside and REvil succesor.

  • suricata: ET MALWARE BlackMatter CnC Activity

    suricata: ET MALWARE BlackMatter CnC Activity

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

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

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

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

  • Modifies extensions of user files 13 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Modifies Control Panel 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20742987e6f743814b25e214f8b2cd43111e2f60a8856a6cca87cafd85422f41.exe
    "C:\Users\Admin\AppData\Local\Temp\20742987e6f743814b25e214f8b2cd43111e2f60a8856a6cca87cafd85422f41.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4044
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1308

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Impact

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4044-118-0x00000000031C3000-0x00000000031C5000-memory.dmp
    Filesize

    8KB

  • memory/4044-119-0x00000000031C0000-0x00000000031C1000-memory.dmp
    Filesize

    4KB