XIII_FREE_LOGS uploaded by a Telegram User

We've been tracking the rise of stealer logs circulating on Telegram channels, often repackaged and resold as "free" resources to attract a wider audience. What really struck us about this particular leak wasn't its size, but its composition: a mix of credentials, URLs, and API hosts suggesting a focus on developers or systems administrators. The data had been circulating quietly since late 2022, but we noticed a recent uptick in discussions referencing it, prompting a deeper dive. The setup here felt different because it wasn't a single website breach, but an aggregation of data harvested from infected machines, potentially giving attackers a foothold into multiple organizations.

"XIII_FREE_LOGS": A Window into Stealer Log Aggregation

A stealer log file, dubbed "XIII_FREE_LOGS", surfaced on Telegram in December 2022, exposing 23,333 records. This collection, first uploaded by a Telegram user, contained a mix of sensitive information including email addresses, plaintext passwords, and associated URLs. What caught our attention was the inclusion of API host addresses alongside the usual credentials, suggesting a potential targeting of development or operational infrastructure. This contrasts with stealer logs that primarily target end-user accounts. The aggregation of data from multiple sources into a single, freely available file significantly amplifies the risk.

Breach Stats:
* Total records exposed: 23,333
* Types of data included: Email Addresses, Plaintext Passwords, URLs, API host addresses
* Sensitive content types: Credentials, potentially sensitive system URLs
* Source structure: Stealer log file (format likely varies depending on the stealer used)
* Leak location(s): Telegram channel
* Date of first appearance: December 29, 2022

The appearance of "free" stealer logs aligns with a broader trend we've observed: the commoditization of stolen data on Telegram and similar platforms. Threat actors often use these "free" dumps as bait to attract new members to their channels or to build reputation within the cybercrime community. Security researchers have documented the increasing prevalence of information-stealing malware, often distributed through phishing campaigns or bundled with pirated software. These stealers quietly exfiltrate data from infected machines, including browser cookies, saved passwords, and cryptocurrency wallets. Once collected, these logs are often packaged and sold or shared on various underground forums and channels. One Telegram post claimed the files were "a gift to the community from a pentester".