Overview

overview

10

Static

static

3

2026-01-08...uk.exe

windows10-2004-x64

10

2026-01-08...uk.exe

windows11-21h2-x64

9

Sharing

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General

  • Target
    2026-01-08_84b5d17fe3829c47032aa0fc0c65bf8a_elex_ryuk
  • Size 111KB
  • Sample260108-d56hrags5b
  • SHA256 fd63714633e40439f60a18e89768fe2bc3df03b4462f2601d141b18761a6cfd5
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
ryukcredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarestealer

Malware Config

Targets

    • Target
      2026-01-08_84b5d17fe3829c47032aa0fc0c65bf8a_elex_ryuk
    • Size 111KB
    • SHA256 fd63714633e40439f60a18e89768fe2bc3df03b4462f2601d141b18761a6cfd5
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    credential_accessdefense_evasiondiscoveryexecutionryukimpactpersistenceransomwarestealer

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Ryuk family

      ryuk

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Renames multiple (6815) files with added filename extension

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

      ransomware

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Executes dropped EXE

    • Modifies file permissions

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks