General
- Target OptiFine_1.21.1_HD_U_J1.jar
- Size 7.0MB
- Sample260415-samjqaav8j
- SHA256 db6d2d14db0009bdea2d8f848e5cb55aac52b555e8e50506dbf7876755b79082
- MD5 03fd074c4ace98a1a70d621bb420d371
- SHA1 24a20f949a719480523669669a4e5e7339df6186
- SHA512 cfb88dbbce5c81d9efc6b46979cc3af15ef43cd4a853ad294fa67c45cc9457e2dfee2ceb254fb22245e92d70210601dbba6fcb0afe071a19e02eee62e5fe6013
- SSDEEP 98304:PdHByG5dbZFDtw2CTlq6NUa7NuOomyPRwWEBwqsW4jznZIxwUAMvd64:VhfFxcq6+CuzPRREPsTzZgwUAMvY4
- TLSH T19576BF7878A7E4A0D11FA976D359C1425826BEAED89460FB1EF80C4EF8ADD440F03F65
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
OptiFine_1.21.1_HD_U_J1.jar
Resource
win10ltsc2021-20260130-en
Behavioral task
behavioral2
Sample
OptiFine_1.21.1_HD_U_J1.jar
Resource
win10v2004-20260130-en
Malware Config
Targets
-
- Target OptiFine_1.21.1_HD_U_J1.jar
- Size 7.0MB
- SHA256 db6d2d14db0009bdea2d8f848e5cb55aac52b555e8e50506dbf7876755b79082
- MD5 03fd074c4ace98a1a70d621bb420d371
- SHA1 24a20f949a719480523669669a4e5e7339df6186
- SHA512 cfb88dbbce5c81d9efc6b46979cc3af15ef43cd4a853ad294fa67c45cc9457e2dfee2ceb254fb22245e92d70210601dbba6fcb0afe071a19e02eee62e5fe6013
- SSDEEP 98304:PdHByG5dbZFDtw2CTlq6NUa7NuOomyPRwWEBwqsW4jznZIxwUAMvd64:VhfFxcq6+CuzPRREPsTzZgwUAMvY4
- TLSH T19576BF7878A7E4A0D11FA976D359C1425826BEAED89460FB1EF80C4EF8ADD440F03F65
- 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.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
-
Badlisted process makes network request
Network request originating from process or tool commonly abused by malware.
-
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.
-
Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Modify Registry
1Subvert Trust Controls
1SIP and Trust Provider Hijacking
1