Analysis

  • max time kernel
    144s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-03-2024 07:46

General

  • Target

    d0512f2063cbd79fb0f770817cc81ab3.exe

  • Size

    67KB

  • MD5

    d0512f2063cbd79fb0f770817cc81ab3

  • SHA1

    e324a2c8fae0d26b12f00ac859340f8d9945a9c1

  • SHA256

    7f6dd0ca03f04b64024e86a72a6d7cfab6abccc2173b85896fc4b431990a5984

  • SHA512

    a62cecdf8887e426332d56914dfe03780402a34896ffe7a3a932986832db7080e599db32bb2113238443750227a50de84ae36c6811993c43b7eee8b1a018d641

  • SSDEEP

    1536:RzICS4AT6GxdEe+TOdincJXvKv8Zg3kl/:qR7auJXSkZg3C/

Score
10/10

Malware Config

Extracted

Path

C:\MaiYWlrYr.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.

  • Renames multiple (114) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\d0512f2063cbd79fb0f770817cc81ab3.exe
    "C:\Users\Admin\AppData\Local\Temp\d0512f2063cbd79fb0f770817cc81ab3.exe"
    1⤵
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2500
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3804
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1348 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4848

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\MaiYWlrYr.README.txt

      Filesize

      1KB

      MD5

      f66968c47a64569e2281f65a95991be0

      SHA1

      ef9e3e80bfbea4c3021b226cb8cd00687013b8a8

      SHA256

      4b950c763006e7c4569df8742855cec31bf82f835bd7e2bdcb5f128db34c82bf

      SHA512

      cb4ace1b3e891ab100b3950c6bc133b216e91c8978a3af1ffd75617b606bb7ceb0133f44d37a30a827655e5b84b016d736a732f5f37635bb727e1a5b722cad24

    • memory/2500-0-0x0000000000830000-0x0000000000840000-memory.dmp

      Filesize

      64KB

    • memory/2500-1-0x0000000000830000-0x0000000000840000-memory.dmp

      Filesize

      64KB

    • memory/2500-184-0x0000000000830000-0x0000000000840000-memory.dmp

      Filesize

      64KB

    • memory/2500-185-0x0000000000830000-0x0000000000840000-memory.dmp

      Filesize

      64KB