General
- Target teamviewer-15.76.5-installer.exe
- Size 2.0MB
- Sample260623-wyjphsfs2j
- SHA256 b21e5c192f4568bb2e9d8c6b362aa1ef5835ca6744ec06ff1841a459846870a6
- MD5 c6c381e91a59a8f27862c1a9249f01d3
- SHA1 0c4f425d7896cb20127471afe699572578aeebf0
- SHA512 075fae9483c015aa755877621b988313eb5db629cc01f0eb79fa8649e3ac04ed508755946fef8d27ac2c32918fcfee03bdc714780db601b81c60a681b7c91366
- SSDEEP 49152:EuI5hR9uc1DYJjNU3id/fPilfX/Dr8iuqjjV:E5//ucpGNUw/fPi5rQSV
- TLSH T1ECA5D03FB28B753EE06E5A367A72E210583B7A6165134C1696F4C88CCF251B01E3E797
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
teamviewer-15.76.5-installer.exe
Resource
win10v2004-20260513-en
Malware Config
Targets
-
- Target teamviewer-15.76.5-installer.exe
- Size 2.0MB
- SHA256 b21e5c192f4568bb2e9d8c6b362aa1ef5835ca6744ec06ff1841a459846870a6
- MD5 c6c381e91a59a8f27862c1a9249f01d3
- SHA1 0c4f425d7896cb20127471afe699572578aeebf0
- SHA512 075fae9483c015aa755877621b988313eb5db629cc01f0eb79fa8649e3ac04ed508755946fef8d27ac2c32918fcfee03bdc714780db601b81c60a681b7c91366
- SSDEEP 49152:EuI5hR9uc1DYJjNU3id/fPilfX/Dr8iuqjjV:E5//ucpGNUw/fPi5rQSV
- TLSH T1ECA5D03FB28B753EE06E5A367A72E210583B7A6165134C1696F4C88CCF251B01E3E797
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Downloads MZ/PE file
-
Uses Session Manager for persistence
Creates Session Manager registry key to run executable early in system boot.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
-
Executes dropped EXE
-
Loads dropped DLL
-
Adds Run key to start application
-
Checks for any installed AV software in registry
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Event Triggered Execution
1Component Object Model Hijacking
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Modify Registry
4Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Discovery
Peripheral Device Discovery
1Query Registry
6Software Discovery
1Security Software Discovery
1System Information Discovery
5System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
1Internet Connection Discovery
1System Time Discovery
1