Kill Chain & Diamond Model Analysis

Map a threat actor or campaign across the Cyber Kill Chain and Diamond Model of Intrusion.

Saved analyses

UNC3886 (threat actor)

Risk

100

Critical

75 techniques 54 tools/malware 16 vulnerabilities 40 IOCs 7/7 stages covered Deepest: Actions on Objectives

1 Reconnaissance

T1681

Search Threat Vendor Data reconnaissance

›

2 Weaponization

T1587

Develop Capabilities resource development

T1587.001

Malware resource development

T1587.004

Exploits resource development

T1588.001

Malware resource development

T1588.004

Digital Certificates resource development

›

3 Delivery

T1190

Exploit Public-Facing Application initial access

›

4 Exploitation

T1059

Command and Scripting Interpreter execution

T1059.001

PowerShell execution

T1059.003

Windows Command Shell execution

T1059.004

Unix Shell execution

T1059.006

Python execution

T1059.012

Hypervisor CLI execution

T1203

Exploitation for Client Execution execution

T1675

ESXi Administration Command execution

T1068

Exploitation for Privilege Escalation privilege escalation

T1548

Abuse Elevation Control Mechanism privilege escalation

CVE CVE-2016-5195

CVE CVE-2017-7269

CVE CVE-2021-21972

CVE CVE-2021-3156

CVE CVE-2021-4034

CVE CVE-2022-22948

CVE CVE-2022-41328

CVE CVE-2022-42475

CVE CVE-2023-20867

CVE CVE-2023-34048

CVE CVE-2025-21590

CVE CVE-2025-40947

CVE CVE-2025-40948

CVE CVE-2026-11645

CVE CVE-2026-20262

CVE CVE-2026-42530

›

5 Installation

T1003

OS Credential Dumping credential access

T1003.001

LSASS Memory credential access

T1040

Network Sniffing credential access

T1212

Exploitation for Credential Access credential access

T1555

Credentials from Password Stores credential access

T1555.005

Password Managers credential access

T1016

System Network Configuration Discovery discovery

T1057

Process Discovery discovery

T1083

File and Directory Discovery discovery

T1124

System Time Discovery discovery

T1673

Virtual Machine Discovery discovery

T1037

Boot or Logon Initialization Scripts persistence

T1037.004

RC Scripts persistence

T1505.006

vSphere Installation Bundles persistence

T1554

Compromise Host Software Binary persistence

›

6 Command & Control

T1074

Data Staged collection

T1074.001

Local Data Staging collection

T1560

Archive Collected Data collection

T1560.001

Archive via Utility collection

T1560.003

Archive via Custom Method collection

T1008

Fallback Channels command and control

T1071

Application Layer Protocol command and control

T1090

Proxy command and control

T1095

Non-Application Layer Protocol command and control

T1104

Multi-Stage Channels command and control

T1105

Ingress Tool Transfer command and control

T1219

Remote Access Tools command and control

T1571

Non-Standard Port command and control

T1573

Encrypted Channel command and control

T1021

Remote Services lateral movement

T1021.004

SSH lateral movement

T1570

Lateral Tool Transfer lateral movement

›

7 Actions on Objectives

T1601

Modify System Image defense impairment

T1685

Disable or Modify Tools defense impairment

T1686

Disable or Modify System Firewall defense impairment

T1690

Prevent Command History Logging defense impairment

T1041

Exfiltration Over C2 Channel exfiltration

T1014

Rootkit stealth

T1027

Obfuscated Files or Information stealth

T1027.005

Indicator Removal from Tools stealth

T1036

Masquerading stealth

T1036.004

Masquerade Task or Service stealth

T1055

Process Injection stealth

T1070

Indicator Removal stealth

T1070.004

File Deletion stealth

T1070.006

Timestomp stealth

T1070.007

Clear Network Connection History and Configurations stealth

T1078

Valid Accounts stealth

T1078.001

Default Accounts stealth

T1140

Deobfuscate/Decode Files or Information stealth

T1205

Traffic Signaling stealth

T1205.001

Port Knocking stealth

T1218.011

Rundll32 stealth

T1564.011

Ignore Process Interrupts stealth

T1574

Hijack Execution Flow stealth

T1035

T1081

T1562.003

Stage risk: Critical High Medium None

Tools & Malware (54)

APT38 Backdoor malware Backdoors CASTLETAP ChaCha20 Custom backdoors Custom malware Custom tools Firefox Fscan GTPDOOR Gdrive GitHub Global Google Drive Hook Keyloggers Leverage MEDUSA MEDUSA rootkit MOPSLED Medusa Nexus Nmap Payload Payload Persistence mechanisms PingPull PowerShell ProxyChains Python scripts REPTILE REPTILE rootkit RIFLESPINE Remote access tools Responder Rootkit Rundll32 SLAPSTICK SOCKS proxy module STOP THINCRUST TINYSHELL backdoor TinyShell backdoor VIRTUALPIE VIRTUALPITA VMware vSphere Installation Bundle (VIB) WildFire YARA Zero-day exploits custom UDP/TCP C2 sockets esxcli utility libpcap packet sniffer systemd

Indicators of Compromise (40)

Domain

libseconfd.so log.bak boot.sh syslog.conf local.txt remote.txt tmp.en versionlock.list +16 more

Filename

vmtoolsd.exe 2.gz 1.gz payload.bin REPTILE.CMD ldb.tar.gz loader.bin pc.bin

IPv4 Address

223.25.78.136 118.189.188.122 45.77.39.28 158.140.135.244 8.222.225.8 101.100.182.122 129.126.109.50 116.88.34.184

ATT&CK Tactic Coverage

Reconnaissance Resource Development Initial Access Execution Persistence Privilege Escalation Defense Evasion Credential Access Discovery Lateral Movement Collection Command & Control Exfiltration Impact

Recommended Mitigations

41 MITRE ATT&CK mitigations cover detected techniques

Browse all →

Reconnaissance (1)

M1056 Pre-compromise

Weaponization (1)

M1056 Pre-compromise

Delivery (8)

M1016 Vulnerability Scanning M1026 Privileged Account Management M1030 Network Segmentation M1035 Limit Access to Resource Over Network M1037 Filter Network Traffic +3 more

Exploitation (17)

M1018 User Account Management M1019 Threat Intelligence Program M1021 Restrict Web-Based Content M1022 Restrict File and Directory Permissions M1026 Privileged Account Management +12 more

Installation (23)

M1013 Application Developer Guidance M1015 Active Directory Configuration M1017 User Training M1018 User Account Management M1019 Threat Intelligence Program +18 more

Command & Control (12)

M1018 User Account Management M1020 SSL/TLS Inspection M1027 Password Policies M1030 Network Segmentation M1031 Network Intrusion Prevention +7 more

Actions on Objectives (30)

M1013 Application Developer Guidance M1015 Active Directory Configuration M1017 User Training M1018 User Account Management M1022 Restrict File and Directory Permissions +25 more

Detection Coverage

72 strategies

7/7 stages covered

Reconnaissance (1)

DET0866 Detection of Search Threat Vendor Data

Weaponization (5)

DET0845 Detection of Malware DET0848 Detection of Digital Certificates DET0853 Detection of Develop Capabilities DET0872 Detection of Malware DET0894 Detection of Exploits

Delivery (1)

DET0080 Exploit Public-Facing Application – mult...

Exploitation (10)

DET0063 Cross-Platform Behavioral Detection of P... DET0202 Behavioral Detection of Windows Command... DET0232 Detection Strategy for ESXi Administrati... DET0287 Exploitation for Client Execution – cros... DET0345 Detection Strategy for Abuse Elevation C... +5 more

Installation (15)

DET0034 Detection of Adversarial Process Discove... DET0112 Boot or Logon Initialization Scripts Det... DET0151 Behavior-chain, platform-aware detection... DET0174 Detection Strategy for Exploitation for... DET0195 Behavioral Detection of System Network C... +10 more

Command & Control (17)

DET0014 Detection of Data Staging Prior to Exfil... DET0060 Detect Ingress Tool Transfers via Behavi... DET0183 Detection Strategy for Lateral Tool Tran... DET0227 Detection Strategy for Non-Standard Port... DET0228 Detect Multi-Stage Command and Control C... +12 more

Actions on Objectives (23)

DET0049 Behavioral Detection of Network History... DET0067 Detection Strategy for Ignore Process In... DET0117 Detection of Masqueraded Tasks or Servic... DET0127 Behavioral Detection of Masquerading Acr... DET0140 Behavioral Detection of Malicious File D... +18 more

Diamond Model of Intrusion

Adversary · Capability · Infrastructure · Victim

Completeness

4/4

Adversary

Confidence

90%

UNC3886

Type: Unknown Active

tracked as CVE-2025-21590

Infrastructure 32 IOC(s)

50%

Domain

libseconfd.so log.bak boot.sh syslog.conf local.txt +19

IPv4 Address

223.25.78.136 118.189.188.122 45.77.39.28 158.140.135.244 8.222.225.8 +3

Artifacts (8)

vmtoolsd.exe 2.gz 1.gz payload.bin REPTILE.CMD ldb.tar.gz +2

Capability

76%

75 technique(s) 54 tool(s)/malware 16 CVE(s)

APT38 Backdoor malware Backdoors CASTLETAP ChaCha20 Custom backdoors Custom malware Custom tools +46

T1035 T1081 T1562.003

collection

T1074 T1074.001 T1560 T1560.001 +1

command and control

T1008 T1071 T1090 T1095 +5

credential access

T1003 T1003.001 T1040 T1212 +2

Victim

70%

Targeted Sectors

telecommunications defense government critical-infrastructure energy utilities aviation healthcare maritime aerospace

Targeted Countries

CN SG US JP RU IR KP

Diamond Model Meta-Features

Phase

Actions on Objectives

Result

Active

Direction

Adversary → Infrastructure → Victim

Methodology

Unknown

Adversary → Capability

Adversary → Infrastructure

Capability → Victim

Infrastructure → Victim

Diamond Model edges

Activity Threads Kill chain phase → Diamond Model event mapping

1 Reconnaissance

Capability (Techniques)

T1681

Capability (Malware)

APT38 Backdoor malware Backdoors

Infrastructure

libseconfd.so log.bak boot.sh

2 Weaponization

Capability (Techniques)

T1587 T1587.001 T1587.004 T1588.001 T1588.004

Capability (Malware)

APT38 Backdoor malware Backdoors

Infrastructure

libseconfd.so log.bak boot.sh

3 Delivery

Capability (Techniques)

T1190

Capability (Malware)

APT38 Backdoor malware Backdoors

Infrastructure

libseconfd.so log.bak boot.sh

4 Exploitation

Capability (Techniques)

T1059 T1059.001 T1059.003 T1059.004 T1059.006

Capability (Malware)

APT38 Backdoor malware Backdoors

Infrastructure

libseconfd.so log.bak boot.sh

5 Installation

Capability (Techniques)

T1003 T1003.001 T1040 T1212 T1555

Capability (Malware)

APT38 Backdoor malware Backdoors

Infrastructure

libseconfd.so log.bak boot.sh

6 Command & Control

Capability (Techniques)

T1074 T1074.001 T1560 T1560.001 T1560.003

Capability (Malware)

APT38 Backdoor malware Backdoors

Infrastructure

libseconfd.so log.bak boot.sh

7 Actions on Objectives

Capability (Techniques)

T1041

Capability (Malware)

APT38 Backdoor malware Backdoors

Infrastructure

libseconfd.so log.bak boot.sh