Analysis

  • max time kernel
    167s
  • max time network
    176s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    23-11-2021 10:31

General

  • Target

    072158f5588440e6c94cb419ae06a27cf584afe3b0cb09c28eff0b4662c15486.exe

  • Size

    34KB

  • MD5

    b06e2455a9c7c9485b85e9bdcceb8078

  • SHA1

    a63304592f422656d7abcb086915f9e799ad4641

  • SHA256

    072158f5588440e6c94cb419ae06a27cf584afe3b0cb09c28eff0b4662c15486

  • SHA512

    adc0501cbb19b53ecafa4522d5369f08e013df3c06dc068f3b1b6b823bca9dfa49a93d0fe1df5fb9ae026305f720cb8923bdbb9c5b7b98fb846670dd3e51fcf9

Malware Config

Extracted

Path

C:\eeWDzMyD5.README.txt

Family

blackmatter

Ransom Note
~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> What happens? Your network is encrypted, and currently not operational. We have downloaded 1TB from your fileserver. 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. >> Data leak includes 1. Full emloyeers personal data 2. Network information 3. Schemes of buildings, active project information, architect details and contracts, 4. Finance info >>> How to contact with us? 1. Download and install TOR Browser (https://www.torproject.org/). 2. Open http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/7NT6LXKC1XQHW5039BLOV. >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/7NT6LXKC1XQHW5039BLOV

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 (paymenthacks .com)

    suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (paymenthacks .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\072158f5588440e6c94cb419ae06a27cf584afe3b0cb09c28eff0b4662c15486.exe
    "C:\Users\Admin\AppData\Local\Temp\072158f5588440e6c94cb419ae06a27cf584afe3b0cb09c28eff0b4662c15486.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:2740
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4476

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/2740-118-0x0000000002C53000-0x0000000002C55000-memory.dmp
    Filesize

    8KB

  • memory/2740-119-0x0000000002C50000-0x0000000002C51000-memory.dmp
    Filesize

    4KB