Bitransomware ransomware group
Bitransomware is one of the extortion operations we watch continuously. This page covers what is known about the group and the current state of its leak site, which we last saw change 2y ago.
Who they are
BitRansomware (also known as DCryptSoft or ReadMe) surfaced in November 2020, primarily as a widespread cryptolocker targeting end users in the APAC region, especially universities in Japan and Hong Kong. The malware was delivered via a malspam campaign powered by the Phorpiex botnet, distributing deceptive ZIP attachments with a screensaver-like .scr payload. Once activated, BitRansomware encrypts files and appends the .ReadMe extension—leaving ransom notes to guide victims toward payment. The campaign peaked sharply around November 4, 2020, with over 28,000 email instances detected in a single day, as seen by VMware NSX telemetry.
Current status
Bitransomware's leak site is not answering. Sites go dark for infrastructure trouble, a deliberate quiet period, or a takedown, and a good number return weeks later under the same name, so the entry stays on the list either way.
The last change we recorded on it was 2y ago (9 Dec 2024 17:50 UTC).
Which organisations this group has named, and when, is part of the SINON platform rather than this page. Create an account to search it, or to be told automatically if a name you care about turns up.
Sectors targeted
This group does not state an industry on its site, so we have nothing reliable to report. Most crews are opportunistic rather than sector-specific in any case — they hit what they can reach.
Watching for your name
If Bitransomware posts your company, a supplier or a subsidiary, you want to hear it from us rather than from a journalist. SINON checks these sites continuously and alerts on the names you give it.
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