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TermUnderground market

Traffer

A person or team that distributes infostealers by redirecting user traffic to malicious content.

Flow

  1. 1Joins a team
  2. 2Gets a build
  3. 3Generates traffic
  4. 4Logs are collected
Related families
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MITRE ATT&CK
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Sources
3 sources
01

Overview

Sekoia defines a traffer (from the Russian “траффер”) as a threat actor in charge of redirecting users’ traffic to malicious content in order to distribute information stealers. Virus Bulletin 2023 (Sekoia)

Traffers are organised in teams: team administrators hire traffers and give them automatically generated builds, a crypter service, manuals and Telegram infrastructure. According to Sekoia, the administrators’ goal is access to large volumes of fresh data through many traffers. Virus Bulletin 2023 (Sekoia)

02

How it works

  1. 1

    Joins a team

    Teams mostly recruit traffers on Russian-speaking cybercrime forums. Virus Bulletin 2023 (Sekoia)

  2. 2

    Gets a build

    The traffer receives a build with a unique identifier that sends the logs it collects to their own Telegram bot. Virus Bulletin 2023 (Sekoia)

  3. 3

    Generates traffic

    They spread the build using the team’s or their own delivery methods. Sekoia

  4. 4

    Logs are collected

    Incoming logs are gathered by the team and sold or used. Sekoia

03

Real-world examples

Recruitment ads

Sekoia analysed more than 100 ads on the Lolz Guru and BHF forums recruiting traffers to distribute infostealers and identified the teams’ common way of operating. Virus Bulletin 2023 (Sekoia)

04

How to detect it

  • Different builds of the same family arriving through different delivery routes (fake downloads, video descriptions, ads) in the same period. Sekoia
05

What to do

  • Restrict access to known malicious sites and unnecessary file types with web filtering. MITRE ATT&CK
06

Related terms

07

Sources

  1. 1Traffers: a deep dive into the information stealer ecosystem · Sekoia, 2022-08-29
  2. 2Infostealers: investigate the cybercrime threat in its ecosystem · Virus Bulletin 2023 (Sekoia), 2023
  3. 3Restrict Web-Based Content (M1021) · MITRE ATT&CK