MalwareUsed by 2 actors

tracing-str

For your environment

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THREAT ACTORS

Groups observed using it

2 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.

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Lazarus

tracing-str is a stripped down variant that skips file scanning and goes straight to the SSH backdoor.

via kmseckmsec.uk

Contagious Interview

tracing-str is a stripped down variant that skips file scanning and goes straight to the SSH backdoor.

via kmseckmsec.uk

MITRE ATT&CK

Techniques & procedures

4 distinct techniques documented for this family, organized by ATT&CK tactic.

Initial Access

1 technique

T1195Supply Chain CompromiseEvidence1

The npm malware is fairly consistent across repositories ... The table below shows a variety of trading bot repositories and their malicious npm dependencies.

Execution

1 technique

T1059Command and Scripting InterpreterEvidence1

On Windows, it uses wmic to enumerate local disks. On Linux systems, it creates a backdoor by appending an SSH public key to the user’s ~/.ssh/authorized_keys file. It also permits SSH (port 22) using ufw.

Persistence

2 techniques

T1037Boot or Logon Initialization ScriptsEvidence1

On Linux systems, it creates a backdoor by appending an SSH public key to the user’s ~/.ssh/authorized_keys file.

T1098.004SSH Authorized KeysEvidence1

On Linux systems, it creates a backdoor by appending an SSH public key to the user’s ~/.ssh/authorized_keys file. It also permits SSH (port 22) using ufw.

Privilege Escalation

2 techniques

T1037Boot or Logon Initialization ScriptsEvidence1

On Linux systems, it creates a backdoor by appending an SSH public key to the user’s ~/.ssh/authorized_keys file.

T1098.004SSH Authorized KeysEvidence1

On Linux systems, it creates a backdoor by appending an SSH public key to the user’s ~/.ssh/authorized_keys file. It also permits SSH (port 22) using ufw.

INDICATORS OF COMPROMISE

IOCs tracked for this family

1 indicator attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.

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Network

1 tracked

IPs, domains, and DNS infrastructure linked to this family.

TypeValueLatest sighting

domain●●●●●●●●●●●●View more in app3 months ago

ACTIVITY FEED

Recent activity

1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

1 SOURCESView more in app

kmsecNews

Mar 17, 2026

Contagious Trader campaign - Coordinated weaponisation of cryptocurrency trading bots by suspected DPRK malware operators | kmsec.uk

A stripped-down malicious npm package variant that focuses on establishing an SSH backdoor rather than file scanning and theft.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets match these IOCs, which detections are missing, which campaigns to expect next, and what to do in the next 30 minutes.

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IOC matching1

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution2

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping4

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.