Overview

overview

10

Static

static

10

meshagent6...er.exe

windows10-2004-x64

10

meshagent6...er.exe

windows11-ltsc_2024-x64

1

Sharing

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General

  • Target
    meshagent64-CozyServer.exe
  • Size 3.3MB
  • Sample260727-rcq49afp2w
  • SHA256 8b28f251892544a860b26e00526f9618673438aeaf2178c6e110352805f6c94e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
meshagentcozyserverbackdoordiscoverypersistencerattrojan

Malware Config

Extracted

Family

  • meshagent

Version

  • 2

Botnet

  • CozyServer

Attributes
  • mesh_id

    0x149733A3E448BECDD13B95E240B8BEC05B676BD7B0AC3B0E792D1AD0FF4D87C38F6A9C9A1AE2755CEA30621BEEB34109

  • server_id

    3E420B694D91AAD36E5C5EB8BDC486A0C41122CBA63A7918B4251B166C958C2558C1BBC19A41A7EA2F88D774DDA74F81

  • wss

    localhost

Targets

    • Target
      meshagent64-CozyServer.exe
    • Size 3.3MB
    • SHA256 8b28f251892544a860b26e00526f9618673438aeaf2178c6e110352805f6c94e
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoorcozyserverdiscoverymeshagentpersistencerattrojan

    • Detects MeshAgent payload

    • Family: MeshAgent

      MeshAgent is an open source remote access trojan written in C++.

      rattrojanbackdoormeshagent

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

      persistence

    • Checks computer location settings

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

    • Executes dropped EXE

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks