Overview

overview

10

Static

static

10

CalybraClo...an.exe

windows10-2004-x64

10

CalybraClo...an.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    CalybraCloudGuardian.exe
  • Size 64KB
  • Sample260203-k56bbaay2e
  • SHA256 5edb168cfbf77cdb68804b35924337700a31cdfba05357e4b5b0690d4ba56f27
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
asyncratcalybraclouddefense_evasionexecutionpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 1.0.7

Botnet

  • CalybraCloud

C2

  • lotte.co.com:443

  • lotte.co.com:80

  • lotte.co.com:8080

  • lotte.co.com:4782

  • lotte.co.com:1604

  • lotte.co.com:1337

  • www.lotte.co.com:443

  • www.lotte.co.com:80

  • www.lotte.co.com:8080

  • www.lotte.co.com:4782

  • www.lotte.co.com:1604

  • www.lotte.co.com:1337

  • www.hit-club.co.com:443

  • www.hit-club.co.com:80

  • www.hit-club.co.com:8080

  • www.hit-club.co.com:4782

  • www.hit-club.co.com:1604

  • www.hit-club.co.com:1337

  • hit-club.co.com:443

  • hit-club.co.com:80

Mutex

  • CBS_CalybraCloud_GuardianLock_4f5g6h7i

Attributes
  • delay

    1

  • install

    true

  • install_file

    CalybraCloudGuardian.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      CalybraCloudGuardian.exe
    • Size 64KB
    • SHA256 5edb168cfbf77cdb68804b35924337700a31cdfba05357e4b5b0690d4ba56f27
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    calybraclouddefense_evasionexecutionasyncratpersistencerat

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

      ratasyncrat

    • Asyncrat family

      asyncrat

    • Async RAT payload

      rat

    • Checks computer location settings

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

    • Executes dropped EXE

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks