General

  • Target

    svchost.ex_

  • Size

    500KB

  • Sample

    221221-mwyafsfc8z

  • MD5

    4dc8cae2cfff6ac862aea48b014937bb

  • SHA1

    80486ca4caa5cb4ce42885dcd66d7a1b4a27d5ce

  • SHA256

    ab0774b4ac9eb7e50c82abad03293ae39b668e81712b6ceb0d35ffe7e330881b

  • SHA512

    79eb56d858b21743ca565d22bb56cd3d8e4ecfdf462f03124672dca090c95ca51f8908f8dea22c3631dddba0a1a2bf443f41fdf8bf70e826335bcc56d0def47d

  • SSDEEP

    12288:YLrjOlAQS+OeO+OeNhBBhhBBYIeVZkD097u8HvaEs1Mm7Q:YLrjSGtVGD05u4yVMm

Malware Config

Extracted

Family

mespinoza

Attributes
  • ransomnote

    Hi Company, Every byte on any types of your devices was encrypted. Don't try to use backups because it were encrypted too. To get all your data back contact us: WalterCollins77@onionmail.org MaryUlrich@onionmail.org JamesWoolley23@protonmail.com Also, be aware that we downloaded files from your servers and in case of non-payment we will be forced to upload them on our website, and if necessary, we will sell them on the darknet. Check out our website, we just posted there new updates for our partners: http://pysa2bitc5ldeyfak4seeruqymqs4sj5wt5qkcq7aoyg4h2acqieywad.onion/ -------------- FAQ: 1. Q: How can I make sure you don't fooling me? A: You can send us 2 files(max 2mb). 2. Q: What to do to get all data back? A: Don't restart the computer, don't move files and write us. 3. Q: What to tell my boss? A: Protect Your System Amigo.

Targets

    • Target

      svchost.ex_

    • Size

      500KB

    • MD5

      4dc8cae2cfff6ac862aea48b014937bb

    • SHA1

      80486ca4caa5cb4ce42885dcd66d7a1b4a27d5ce

    • SHA256

      ab0774b4ac9eb7e50c82abad03293ae39b668e81712b6ceb0d35ffe7e330881b

    • SHA512

      79eb56d858b21743ca565d22bb56cd3d8e4ecfdf462f03124672dca090c95ca51f8908f8dea22c3631dddba0a1a2bf443f41fdf8bf70e826335bcc56d0def47d

    • SSDEEP

      12288:YLrjOlAQS+OeO+OeNhBBhhBBYIeVZkD097u8HvaEs1Mm7Q:YLrjSGtVGD05u4yVMm

    • Mespinoza Ransomware

      Also known as Pysa. Ransomware-as-a-servoce which first appeared in 2020.

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Impact

Data Encrypted for Impact

1
T1486

Tasks