Skip to main content
Darkfield

Ransomware victim disclosure

← All victims

Hey cisco!

Claimed by Hellogookie · listed 2 years ago

27m
Age
since listed · data leaked

Status timeline

  1. ListedApr 19, 2024
  2. Data leakeddate unknown

At a glance

Group
Hellogookie
Status
Data leaked
Country
United States
Sector
Technology
Listed on leak site
Apr 19, 2024

About the victim

AI dossier — public-source company profile

Cisco Systems is a multinational technology company headquartered in the United States that designs, manufactures, and sells networking equipment, cybersecurity solutions, and software platforms. The company serves enterprise customers globally, including 99% of Fortune 500 companies and over 1 million customers worldwide, with a focus on AI infrastructure, secure networking, and cloud control solutions.

Industry
Networking, Cybersecurity & Software Infrastructure
Founded
1984

Attack summary

Severity: high — Confirmed unauthorized access to Cisco's domain infrastructure with extraction of privileged credentials (administrator-level hashes). While the specific scope of exfiltrated business data is not detailed in the post, credential compromise at a major global technology company serving critical infrastructure clients represents significant operational risk and potential for lateral movement.

The Hellogookie group claims to have accessed Cisco's network and extracted credentials (Windows domain administrator and user account hashes from cisco.com domain). The group references previous failed negotiations ('You lied to us and play for time') and threatens future attacks, suggesting both intrusion capability and potential data exfiltration, though specific data types are not detailed in this excerpt.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Windows domain credentials
  • Administrator account hashes
  • User account hashes

What the group claims

You lied to us and play for time to kick us out. We will meet you soon, again. Next time you'll have no chance. cisco.com\Administrator:500:aad3b435b51404eeaad3b435b51404ee:4e0de2e548880cd48c588f1391fa6386::: cisco.com\carriep:12342831:aad3b435b5140...

Sources

Source

Indexed 2 years ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About Hellogookie

Hellogookie is an emerging ransomware group first observed in April 2024, appearing to be primarily financially motivated based on their operational patterns. The group's origin and affiliations remain unclear due to limited public documentation, with no confirmed country of origin or established links to other ransomware operations reported by major threat intelligence organizations. Given the group's recent emergence and limited victim count of three documented cases, specific details about their attack methodology, encryption techniques, and whether they employ double or triple extortion tactics have not been extensively documented by reputable security researchers. The group has primarily targeted technology sector organizations within the United States, though the small sample size of known victims limits broader pattern analysis. Hellogookie appears to remain active as of current reporting, though the limited intelligence available suggests they operate as a relatively small-scale threat actor compared to more established ransomware families. The group has been linked to 3 public disclosures across our corpus. First observed on a leak site on April 19, 2024. The operation is currently inactive.

Also tracked as: HELLO GOOKIE.

Timeline of this disclosure

  • April 19, 2024Hey cisco! listed by Hellogookieon the group's public leak site

Other recent disclosures by Hellogookie

Hellogookie has been linked to 3 public victims on Darkfield. A sample of the most recent:

See the full Hellogookie dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, Hey cisco! is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Hellogookie means Hey cisco! appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
  • Monitor for the data appearing on Hellogookie's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.