General
- Target UltraViewer_setup_6.6.124_en.exe
- Size 3.5MB
- Sample261023-e3y7bshw6t
- SHA256 020aac79a14717e316a593155ca778dd3e253b888bf62633b174838d35df7f41
- MD5 ab0df05e39bd73f4adade8fdc21a1f25
- SHA1 b12c2771c040f6175902ec5941ffd09748f87ed3
- SHA512 b26287b701103254acc810cc4ff8e66df70243d80c69459daaa6a8e0e1c52d55dd4d306991ed254b367ac410734193b598d47ba05fa4cd4d54c846ba56a245eb
- SSDEEP 98304:65zMfaTDdMIOZhgAOgp4GMFBgPaJ+nHmf9ViPf:6O0ZMVuAVfMAM+HmFcf
- TLSH T133F53346F7CB0472F9622A73C460D054AD277DA912F0615A7EBCE60C06B73D3E8B6B91
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
UltraViewer_setup_6.6.124_en.exe
Resource
win10ltsc2021-20260911-en
Malware Config
Targets
-
- Target UltraViewer_setup_6.6.124_en.exe
- Size 3.5MB
- SHA256 020aac79a14717e316a593155ca778dd3e253b888bf62633b174838d35df7f41
- MD5 ab0df05e39bd73f4adade8fdc21a1f25
- SHA1 b12c2771c040f6175902ec5941ffd09748f87ed3
- SHA512 b26287b701103254acc810cc4ff8e66df70243d80c69459daaa6a8e0e1c52d55dd4d306991ed254b367ac410734193b598d47ba05fa4cd4d54c846ba56a245eb
- SSDEEP 98304:65zMfaTDdMIOZhgAOgp4GMFBgPaJ+nHmf9ViPf:6O0ZMVuAVfMAM+HmFcf
- TLSH T133F53346F7CB0472F9622A73C460D054AD277DA912F0615A7EBCE60C06B73D3E8B6B91
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Downloads MZ/PE file
-
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
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Stops running service(s)
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Adds Run key to start application
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
-
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.
-
ConfuserEx .NET packer
Detects ConfuserEx .NET packer.
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Drops file in System32 directory
-
Probable phishing domain
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1System Services
1Service Execution
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Component Object Model Hijacking
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Impair Defenses
1Modify Registry
4Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1Discovery
Browser Information Discovery
1Network Share Discovery
1Peripheral Device Discovery
2Query Registry
7Remote System Discovery
1System Information Discovery
6System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
1System Time Discovery
1