Adversaries may abuse CMSTP to proxy execution of malicious code. The Microsoft Connection Manager Profile Installer (CMSTP.exe) is a command-line program used to install Connection Manager service profiles.1 CMSTP.exe accepts an installation information file (INF) as a parameter and installs a service profile leveraged for remote access connections. Adversaries may supply CMSTP.exe with INF files infected with malicious commands.2 Similar to Regsvr32 / ”Squiblydoo”, CMSTP.exe may be abused to load and execute DLLs3 and/or COM scriptlets (SCT) from remote servers.456 This execution may also bypass AppLocker and other application control defenses since CMSTP.exe is a legitimate binary that may be signed by Microsoft. CMSTP.exe can also be abused to Bypass User Account Control and execute arbitrary commands from a malicious INF through an auto-elevated COM interface.789
- Microsoft Connection Manager Oct 2009
- Twitter CMSTP Usage Jan 2018
- MSitPros CMSTP Aug 2017
- Twitter CMSTP Jan 2018
- GitHub Ultimate AppLocker Bypass List
- Endurant CMSTP July 2018
- MSitPros CMSTP Aug 2017
- GitHub Ultimate AppLocker Bypass List
- Endurant CMSTP July 2018
使用该技术的组织
| 组织 | 名称 | 国家 |
|---|---|---|
| grp_g0080 | Cobalt Group | — |
| grp_g0069 | MuddyWater | — |
断言
尚无指向该技术的公开断言。
记录自动入库·未人工复核;置信度与有效期按引用读取。