2026-08-28 · view entry permalink →
CNCMachineRMS, an undocumented remote-access trojan delivered through a four-stage BabaDeda loader chain that smuggles shellcode via a benign Windows date-formatting API
LevelBlue SpiderLabs documents CNCMachineRMS, a previously undocumented 1.14 MB x64 remote-access trojan delivered through a four-stage BabaDeda loader chain. A ClickFix-style lure launches a legitimately signed IBM SPSS IDE executable (WinWrapIDE.exe), abusing its scripting engine to load a malicious DLL: "infection starts with a ClickFix lure that launches a legitimately signed IBM SPSS IDE executable, WinWrapIDE.exe, whose scripting engine is abused to load a malicious DLL" (LevelBlue SpiderLabs, 2026-08-10). Four decoy DLLs then load in sequence through standard Windows DLL import resolution before the final stage smuggles its shellcode into execution via EnumTimeFormatsEx, a benign date-formatting Windows API: "the final stage smuggles shellcode into execution via EnumTimeFormatsEx, a benign date-formatting API" (LevelBlue SpiderLabs, 2026-08-10), a technique that hides the injection point from analysts looking for conventional process-injection APIs.
The final implant has no import table and resolves its APIs by hash at runtime, builds its strings on the stack rather than storing them statically, uses a custom C2 protocol, takes a screenshot on first contact, beacons roughly every 600 seconds, and installs seven distinct persistence mechanisms: "it takes a screenshot on first contact, then beacons every 600 seconds", while the decoded strings describe "a local account backdoor, seven persistence mechanisms, and twenty typed commands for staging and running whatever the operator sends next" (LevelBlue SpiderLabs, 2026-08-10). Capabilities include interactive shell access, file management, screen capture and local account backdoors. BabaDeda-chain ClickFix lures are a recurring initial-access vector across the covered sectors, making the delivery mechanism as relevant as the payload itself.
Triage: the API-hashing and stack-built-strings design defeats static string-based detection, so behavioural signals carry the weight here, a legitimately signed application (IBM SPSS or any similarly abused signed binary) spawning a scripting-engine child process that loads an unsigned DLL is the first anomaly, and a process invoking EnumTimeFormatsEx immediately followed by execution flow transferring into memory it just wrote (rather than into a legitimate formatting routine) is the discriminator against the API's ordinary, benign use, no legitimate application calls this function as a prelude to code execution elsewhere in its own address space.
Infection starts with a ClickFix lure that launches a legitimately signed IBM SPSS IDE executable, WinWrapIDE.exe, whose scripting engine is abused to load a malicious DLL.
The final stage smuggles shellcode into execution via EnumTimeFormatsEx, a benign date-formatting API.
It takes a screenshot on first contact, then beacons every 600 seconds.
Two quotations here were not verbatim. The delivery quote is: "Infection starts with a ClickFix lure that launches a legitimately signed IBM SPSS IDE executable, WinWrapIDE.exe, whose scripting engine is abused to load a malicious DLL" (LevelBlue SpiderLabs, 2026-08-10); the executable is named in the source and was dropped here. The second was a composite that does not exist as a sentence anywhere in the article: LevelBlue writes "It takes a screenshot on first contact, then beacons every 600 seconds" as its own bullet, and separately that the decoded strings describe "a local account backdoor, seven persistence mechanisms, and twenty typed commands for staging and running whatever the operator sends next" (same article). Every behaviour this entry describes is still what LevelBlue reports; what was wrong was presenting two passages as one quotation.