Resubmissions

28-10-2021 08:45

211028-knq53afhbm 10

05-10-2021 12:34

211005-pr319aaagr 10

General

  • Target

    b824bbc645f15e213b4cb2628f7d383e9e37282059b03f6fe60f7c84ea1fed1f

  • Size

    72KB

  • Sample

    211005-pr319aaagr

  • MD5

    1dd464cbb3fbd6881eef3f05b8b1fbd5

  • SHA1

    cafd8d20f2abaebbbfc367b4b4512107362f3758

  • SHA256

    b824bbc645f15e213b4cb2628f7d383e9e37282059b03f6fe60f7c84ea1fed1f

  • SHA512

    1564fffe28c2b7c2b18c35d68e3e254106620b2c3b7b5f41b95cfbb3a2cf0d9c42616d670b4060d09129ff18f0148c03e00bbd205f9d10697b265109a43d053c

Malware Config

Extracted

Family

blackmatter

Version

1.6

Botnet

0c6ca0532355a106258791f50b66c153

Attributes
  • attempt_auth

    false

  • create_mutex

    false

  • encrypt_network_shares

    true

  • exfiltrate

    false

  • mount_volumes

    true

rsa_pubkey.base64
aes.base64

Extracted

Path

C:\AVx2lZV2X.README.txt

Family

blackmatter

Ransom Note
~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> Hello B&G International >>> 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/RSW33BDOYPLWM78U9A09BZDI >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/RSW33BDOYPLWM78U9A09BZDI

Targets

    • Target

      b824bbc645f15e213b4cb2628f7d383e9e37282059b03f6fe60f7c84ea1fed1f

    • Size

      72KB

    • MD5

      1dd464cbb3fbd6881eef3f05b8b1fbd5

    • SHA1

      cafd8d20f2abaebbbfc367b4b4512107362f3758

    • SHA256

      b824bbc645f15e213b4cb2628f7d383e9e37282059b03f6fe60f7c84ea1fed1f

    • SHA512

      1564fffe28c2b7c2b18c35d68e3e254106620b2c3b7b5f41b95cfbb3a2cf0d9c42616d670b4060d09129ff18f0148c03e00bbd205f9d10697b265109a43d053c

    Score
    10/10
    • BlackMatter Ransomware

      BlackMatter ransomware group claims to be Darkside and REvil succesor.

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Enumerates connected drives

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

    • Sets desktop wallpaper using registry

    • Suspicious use of NtSetInformationThreadHideFromDebugger

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

Tasks