General
- Target ultraviewer-6.6.127-installer.exe
- Size 2.0MB
- Sample260817-ppfsyabd98
- SHA256 bb09166e4fdfe8c97afb3470e349c0656acdb9ed108d66053a935e45151cfb62
- MD5 db67826e72792ba752b98ce2992f499e
- SHA1 2941500e77f88e01a15909f144572b2a114fc0bc
- SHA512 3f11f7b4a77e522119a3dd92f77897ad317c68ac7521a771eed08354fc334c97d81b2c4b905b39be618667f638aa8e701abc31bccd47c3c000f8653b718f2987
- SSDEEP 24576:dXNrSLScusMmOvjjhzvLVAOgLgkcXjPeynRkIegf+Sve+9Cx+gBbfWzOUxSXc64a:+uI2hREHcTeynRkfg7ve+AhrWzOUq
- TLSH T1EEA5D03FB28B653EE06E5A367A72E210583B7A6165138C5696F4C88CCF254701E3F787
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
ultraviewer-6.6.127-installer.exe
Resource
win10v2004-20260513-en
Malware Config
Targets
-
- Target ultraviewer-6.6.127-installer.exe
- Size 2.0MB
- SHA256 bb09166e4fdfe8c97afb3470e349c0656acdb9ed108d66053a935e45151cfb62
- MD5 db67826e72792ba752b98ce2992f499e
- SHA1 2941500e77f88e01a15909f144572b2a114fc0bc
- SHA512 3f11f7b4a77e522119a3dd92f77897ad317c68ac7521a771eed08354fc334c97d81b2c4b905b39be618667f638aa8e701abc31bccd47c3c000f8653b718f2987
- SSDEEP 24576:dXNrSLScusMmOvjjhzvLVAOgLgkcXjPeynRkIegf+Sve+9Cx+gBbfWzOUxSXc64a:+uI2hREHcTeynRkfg7ve+AhrWzOUq
- TLSH T1EEA5D03FB28B653EE06E5A367A72E210583B7A6165138C5696F4C88CCF254701E3F787
- 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.
-
Executes dropped EXE
-
Loads dropped DLL
-
Checks for any installed AV software in registry
-
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
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Modify Registry
2Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1