General

  • Target

    461f8a55ea2eecfcc26562326af4b56fbaf8e4957a4a6e0b75bec8ee90ace078.bin

  • Size

    669KB

  • Sample

    210808-hen79cxffj

  • MD5

    6da9c76a6e319c17f1d39e0ae2eaf2af

  • SHA1

    d8743d22c816de1b1807a64d2bdde6baea838cd0

  • SHA256

    461f8a55ea2eecfcc26562326af4b56fbaf8e4957a4a6e0b75bec8ee90ace078

  • SHA512

    70c3e123f887556ac42bb58d730b59d8d2df1cca4d3e895f79fb6cfa5c1a63a64d46bc6fdc23c711be7b966aaf80d2fb7e83f52bdf4c096cbc946f5a6c976db0

Malware Config

Targets

    • Target

      461f8a55ea2eecfcc26562326af4b56fbaf8e4957a4a6e0b75bec8ee90ace078.bin

    • Size

      669KB

    • MD5

      6da9c76a6e319c17f1d39e0ae2eaf2af

    • SHA1

      d8743d22c816de1b1807a64d2bdde6baea838cd0

    • SHA256

      461f8a55ea2eecfcc26562326af4b56fbaf8e4957a4a6e0b75bec8ee90ace078

    • SHA512

      70c3e123f887556ac42bb58d730b59d8d2df1cca4d3e895f79fb6cfa5c1a63a64d46bc6fdc23c711be7b966aaf80d2fb7e83f52bdf4c096cbc946f5a6c976db0

    • MedusaLocker

      Ransomware with several variants first seen in September 2019.

    • MedusaLocker Payload

    • UAC bypass

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Reads user/profile data of web browsers

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

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

MITRE ATT&CK Matrix ATT&CK v6

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

File Deletion

2
T1107

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Tasks