MALICIOUS (1) campaign cataloged at 2026-08-26(2).

1. The campaign has clearly malicious intent, like infostealers.
2. This is just the date of creating the catalog entry. It may not reflect the date of creation of the campaign itself.

2026-08-pybitjs

Package embeds obfuscated, JS-based malware downloading further remote stages. The code is triggered during building the package and on every Python startup (via PTH file). The next-stage IP is delivered via a blockchain.

The payload and embedded IoCs are consistent with campaigns attributed to Lazarus APT/PolinRider.

Abuse categories

abuses-pth

The package uses .pth files, sitecustomize or usercustomize modules to execute malicious code during Python startup, even without importing the package code manually.

c2-in-blockchain

Campaign uses c2-in-blockchain.

malware

Package contains or installs known malware.

obfuscation

Code uses obfuscation techniques to hide its true purpose.

remote_script

Downloads and executes a remote malicious script.

References

Referenced resources may include blog posts about the campaign, malware analysis, sandbox reports, or other relevant information.

• https://github.com/stamparm/maltrail/blob/12360952bc81865dc973e33e5033cea6e1fcc342/trails/static/malware/apt_lazarus.txt#L7414

• https://etherscan.io/address/0xa322E5f3D311D3080e6f0121063e9aDC2490Ef1a

IoCs & related URLs

URLs with payloads, characteristic domains, C&C IPs, repositories with malicious code, etc.

• 23.27.13.135

• hxxp://23.27.13.135:443/0x/cls

Packages in the campaign

campaign:2026-08-pybitjs

• pybitjs