Overview

overview

10

Static

static

3

IronChain.exe

windows10-2004-x64

9

IronChain.exe

windows10-ltsc_2021-x64

IronChain.exe

windows11-21h2-x64

9

IronChain.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    IronChain.exe
  • Size 9.3MB
  • Sample260912-spdv5azara
  • SHA256 aaa626a8b1f3714114c2f2280ee5724e23134e12ed217e79b5d0935b97c6dab5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
bootkitdefense_evasiondiscoveryevasionexecutionexploitimpactpersistenceprivilege_escalationpyinstallerransomwareupx

Malware Config

Targets

    • Target
      IronChain.exe
    • Size 9.3MB
    • SHA256 aaa626a8b1f3714114c2f2280ee5724e23134e12ed217e79b5d0935b97c6dab5
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryevasionexecutionexploitimpactpersistenceransomwareupxbootkitprivilege_escalation

    • Modifies WinLogon for persistence

      persistence

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Drops file in Drivers directory

    • Modifies Windows Firewall

      defense_evasion

    • Possible privilege escalation attempt

      exploit

    • Checks computer location settings

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

    • Creates new service(s)

      persistenceexecution

    • Disables service(s)

      defense_evasionexecution

    • Impair Defenses: Safe Mode Boot

      defense_evasion

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Stops running service(s)

      defense_evasionexecution

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Discovers running processes

      Running process information can be used to identify security tools or plan follow-on actions.

      discovery

    • Drops file in System32 directory

    • Executes a VBScript file via the Windows Script Host.

      execution

    • Sets desktop wallpaper using registry

      ransomware

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

5
T1059

PowerShell

2
T1059.001

Visual Basic

1
T1059.005

Windows Command Shell

1
T1059.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

System Services

3
T1569

Service Execution

3
T1569.002

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

4
T1543

Windows Service

4
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

4
T1543

Windows Service

4
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Direct Volume Access

1
T1006

File and Directory Permissions Modification

1
T1222

Impair Defenses

3
T1562

Disable or Modify System Firewall

1
T1562.004

Safe Mode Boot

1
T1562.009

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

3
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Query Registry

3
T1012

Remote System Discovery

1
T1018

System Information Discovery

3
T1082

System Network Configuration Discovery

2
T1016

Internet Connection Discovery

2
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

4
T1490

Service Stop

2
T1489

Tasks