Overview

overview

10

Static

static

3

trmm-testi...64.exe

windows7-x64

1

trmm-testi...64.exe

windows10-2004-x64

10

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General

  • Target

    trmm-testing-test-workstation-amd64.exe

  • Size

    5.0MB

  • Sample

    250116-xq46xsvnbn

  • MD5

    5c5a5108d7b01b5dae1feeb2f1461336

  • SHA1

    a144c90d755ddf78f699544f75a622e8502f2289

  • SHA256

    3d550b8b386d201750d4c590e6a31c4a89fd9f409a7b8ee17541c9dd0227fb5a

  • SHA512

    e51029943e1094e23b7824fd3290c72ae7d86d8414608214ee1c3128bada72bf575722fd2968abf6a3ade9dd578d374e8cc7914dd31a7f145b85120388d03824

  • SSDEEP

    49152:fwHdjznTzM1AxDsrb/T8vO90d7HjmAFd4A64nsfJ4h6z81LMiGBK1AdVc3mYerz5:cTzM1AxhuoEV6mzNSTEB+eB

Score
10/10
meshagenttacticalrmmbackdoordiscoveryevasionexecutionpersistenceprivilege_escalationrattrojan

Malware Config

Extracted

Family

meshagent

Version

2

Botnet

TacticalRMM

C2

http://mesh.kf637.tech:443/agent.ashx

Attributes
  • mesh_id

    0x027EE0A0A99EC9F223584C015748F9287DAD71E0172F49038454EBA30C1E818596038C0D789158EA51101068B1549D04

  • server_id

    F1127B8E25531BA0F97A368EC0AF1FD444747B7FE7FEADE171C05E3063DF0E0BD0589D47759FF1DF8CA1D4B74C1E1C4C

  • wss

    wss://mesh.kf637.tech:443/agent.ashx

Targets

    • Target

      trmm-testing-test-workstation-amd64.exe

    • Size

      5.0MB

    • MD5

      5c5a5108d7b01b5dae1feeb2f1461336

    • SHA1

      a144c90d755ddf78f699544f75a622e8502f2289

    • SHA256

      3d550b8b386d201750d4c590e6a31c4a89fd9f409a7b8ee17541c9dd0227fb5a

    • SHA512

      e51029943e1094e23b7824fd3290c72ae7d86d8414608214ee1c3128bada72bf575722fd2968abf6a3ade9dd578d374e8cc7914dd31a7f145b85120388d03824

    • SSDEEP

      49152:fwHdjznTzM1AxDsrb/T8vO90d7HjmAFd4A64nsfJ4h6z81LMiGBK1AdVc3mYerz5:cTzM1AxhuoEV6mzNSTEB+eB

    Score
    10/10
    meshagenttacticalrmmbackdoordiscoveryevasionexecutionpersistenceprivilege_escalationrattrojan

    • Detects MeshAgent payload

    • MeshAgent

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

      rattrojanbackdoormeshagent

    • Meshagent family

      meshagent

    • Blocklisted process makes network request

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Stops running service(s)

      evasionexecution

    • Executes dropped EXE

    • Loads dropped DLL

    • 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 v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Discovery

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1
T1489

Tasks