T1140Stealth
Deobfuscate/Decode Files or Information
Adversaries may use Obfuscated Files or Information to hide artifacts of an intrusion from analysis. They may require separate mechanisms to decode or deobfuscate that information depending on how they intend to use it. Methods for doing that include built-in functionality of malware or by using utilities present on the system. One such example is the use of certutil to decode a remote access…
CVEs2
In CISA KEVThe US Cybersecurity and Infrastructure Security Agency’s list of Known Exploited Vulnerabilities. A CVE is added when CISA has evidence that attackers are using it.2
Reports0
Detections
18 Sigma rules tagged T1140Deobfuscate/Decode Files or InformationT114018 general rules
- Base64 Encoded PowerShell Command Detectedhightest
- MSHTA Execution with Suspicious File Extensionshightest
- Ping Hex IPhightest
- Potential Base64 Decoded From Imageshightest
- Potential BlackByte Ransomware Activityhightest
- PowerShell Base64 Encoded FromBase64String Cmdlethightest
- Suspicious Inbox Manipulation Ruleshightest
- UNC4841 - Download Compressed Files From Temp.sh Using Wgethightest
Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.
CVEs linked to Deobfuscate/Decode Files or Information
2 CVEs, by priority. Each link shows its badge.- CVE-2021-40539Zoho ManageEngine ADSelfService Plus Authentication Bypass VulnerabilityZoho · ManageEngineKEVRansomwarePublic exploitCritical · 9.8T1190Exploit Public-Facing ApplicationT1047Windows Management Instrumentation+11 more · 1 reportMITRE CTID mapping of the KEV entry · follow-on activity99.0%Top 0.07%83.7priority
- CVE-2021-44077Zoho ManageEngine ServiceDesk Plus Remote Code Execution VulnerabilityZoho · ManageEngine ServiceDesk Plus (SDP) / SupportCenter PlusKEVPublic exploitCritical · 9.8T1190Exploit Public-Facing ApplicationT1047Windows Management Instrumentation+11 moreMITRE CTID mapping of the KEV entry · follow-on activity93.3%Top 0.16%69.8priority