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README.md

CSCrownBuildStealer

CSCrownBuildStealer is a CyStack-coined identifier for a six-line Information.txt Telegram-bot caption observed inside !! 2025 JULY.part001.rar aggregator packs under [<CC>]<IPv4>/Information.txt victim folders. The panel is a compact preview summary - one field per line, each line opens with an emoji glyph attached directly to the ASCII key with no separator space (🚩IP:, 👑Build:, 🔑Passwords:, 🍪Cookies:, 💰Wallets:, 📂Applications:). The zero-space form is the panel quirk that distinguishes this layout from other emoji- prefixed parsers.

The IP line carries a trailing (<CC>) two-letter ISO country code in parentheses after the IPv4. The Build line carries an operator-set build / affiliate label (STEAM in the observed sample, but the slot accepts arbitrary literals). The Wallets line names a single wallet brand (MetaMask) rather than emitting a count. The Applications line uses a literal No No / No placeholder when the empty-bucket sentinel applies.

Family attribution is provisional pending a published threat-intel mapping for this layout. Surveyed sources (TrendMicro, SentinelOne Labs, Kaspersky, Cyfirma, SOCRadar, Cloudflare, Talos, Unit 42, Microsoft TI, Mandiant / Google TAG, Recorded Future, eSentire, Cybereason, BleepingComputer research, CERT-AGID, Drweb, Proofpoint, ANY.RUN, plus the public stealer-format catalogues MalBeacon / what-is-this-stealer, fastfire / deepdarkCTI, Malpedia community pages, RussianPanda blog) do not document a family that emits this exact six-line zero-space emoji-key shape with the country-code-in-parens IP convention and the Build: operator label slot.

Variants observed: 1 Top attribution confidence: unknown

Targets

  • Browser saved credentials (count surfaced as Passwords:)
  • Browser cookies (count surfaced as Cookies:)
  • Cryptocurrency wallet extensions (single brand surfaced as Wallets:)
  • Application-data presence flag (Applications:)

Variants

cystack_c65f37b2

Attribution confidence: unknown

Filenames: Information.txt

Sample (sanitized):

🚩IP: <ip> (AL)
👑Build: STEAM
🔑Passwords: 1
🍪Cookies: 0
💰Wallets: MetaMask
📂Applications: No No / No

Detection

Fingerprint requires three line-anchored zero-space emoji-key literals: 👑Build:, 🚩IP:, and 📂Applications:. The three-anchor combination is unique across the registry - no other parser emits any of the three forms (CSEmojiInfo / CSEmojiCount / CSMainLoot / CSRLPanel all separate the glyph from the ASCII key with a space). During triage, treat the family attribution as unknown: the compact six-line bot- caption shape ships only IP, country, and build-label as IOC fields, so per-victim hostname / username / OS / HWID / timestamp cannot be recovered from this log alone. The Build: slot is operator-controlled, so one observed value (STEAM) does not represent the full label space.

MITRE ATT&CK

Related families

References