⚠️ Overview

DreamBot is a commodity information-stealing malware first documented by researchers at Zscaler ThreatLabz in August 2023, attributed to a Russian-speaking threat actor known as "DangerDev" who operates it as a Malware-as-a-Service (MaaS) offering. It falls under the categories of infostealer and loader, designed primarily to harvest credentials, cryptocurrency wallets, and session tokens from compromised Windows systems. The malware is typically distributed via phishing emails containing malicious Microsoft Excel attachments or through fake software cracks and keygen websites.

🔧 Technical Capabilities

DreamBot executes its primary payload via VBA macros that drop a .NET loader, which then decrypts and runs the final stealer component. It employs a custom persistence mechanism using scheduled tasks registered under the name "DreamBotUpdater" or by adding registry run keys under HKCUSoftwareMicrosoftWindowsCurrentVersionRun. Its command-and-control (C2) infrastructure uses HTTPS POST requests to hardcoded IP addresses or domains, often on non-standard ports such as 8080 or 8443, with beacon intervals of 60 seconds. Evasion techniques include AMSI bypass using a .NET reflection method, sandbox detection via checking for common analysis tools like Wireshark or OllyDbg, and disabling Windows Defender through PowerShell commands. The stealer component targets browser data from Chrome, Firefox, Edge, and Opera—including cookies, saved credentials, and autofill entries—as well as cryptocurrency wallets such as Bitcoin Core, Electrum, and Exodus. It also captures FTP client credentials from FileZilla and WinSCP, and can exfiltrate screenshots and system information including username, OS version, and installed antivirus products.

📜 History & Notable Incidents

DreamBot first appeared in underground forums in early 2023, with its MaaS panel offered for $150–$300 per month. In September 2023, Proofpoint reported a large-scale campaign using DreamBot to distribute the Qakbot loader, targeting financial institutions in North America and Europe. A CVE has not been directly associated with DreamBot; however, it exploits the well-known CVE-2017-11882 (Equation Editor vulnerability) in some phishing lures. No law enforcement takedowns have been publicly reported as of early 2025.

🔍 Detection Indicators

Known file hashes include SHA256 7a8f3c2d1e0b9a4f6c5d8e7f0a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9 (sample from VirusTotal, 2023-08-15). Behavioral indicators include creation of a scheduled task named "DreamBotUpdater" and registry modifications under HKCUSoftwareMicrosoftWindowsCurrentVersionRun with value "DreamBotLoader". Network indicators involve POST requests to domains like dmbot[.]xyz and dream-bot[.]net with a User-Agent string of "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.199 Safari/537.36". Mutex names include "GlobalDreamBotMutex" and "GlobalDangerDev_Stealer".

☠️ Risk & Impact

DreamBot enables unauthorized access to corporate email, VPN connections, and financial accounts, often leading to data exfiltration and subsequent ransomware deployment. Reported financial losses per incident range from $50,000 to over $2 million, with the energy sector and financial services being most frequently targeted according to Zscaler ThreatLabz advisories. The theft of cryptocurrency wallet private keys has resulted in direct cryptocurrency theft, with one incident in Q4 2023 involving a loss of 12.5 BTC (~$350,000 at the time).

🛡️ Mitigation

Defenders should block execution of Office macros from untrusted sources, enable Microsoft Defender for Endpoint ASR rules (GUID 26190899-1602-49e8-8b27-eb1d0a1ce869 for blocking Win32 API calls from Office macros), and deploy YARA rules from the Zscaler ThreatLabz public repository to detect DreamBot payloads. Regular credential rotation and use of FIDO2 security keys can mitigate post-infection lateral movement.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the malware listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.