General
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Target
RobloxPlayerInstaller.exe
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Size
7.3MB
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Sample
250122-a4j2kszjdy
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MD5
e16e648456a76cf6c12be47b86b4401c
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SHA1
a033d9a48bf918dbba65ef29576dfdcb5db2194c
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SHA256
3032ddec0e6152a0aa21929060e8fd6fc0a55c4d7d8c534fe6be24775dbc39ae
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SHA512
68f335d81d20b8e5e273310148c011aaf8c2d42f2902da31653f705090f2c86f6a1c872c40e776aebd0c394abc32b87efa0213c95292467fa3b5ba0b8c9a6d6f
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SSDEEP
98304:rgvrH5wKTU78I5MrnIp+elIZzF6WIhU5J5B16SgenYKJODmPFPYFxArinAFxDB:UrH5wKTUYV8qtv5BUSr0DmPFPaAmA5
Static task
static1
Behavioral task
behavioral1
Sample
RobloxPlayerInstaller.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
RobloxPlayerInstaller.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
RobloxPlayerInstaller.exe
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Size
7.3MB
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MD5
e16e648456a76cf6c12be47b86b4401c
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SHA1
a033d9a48bf918dbba65ef29576dfdcb5db2194c
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SHA256
3032ddec0e6152a0aa21929060e8fd6fc0a55c4d7d8c534fe6be24775dbc39ae
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SHA512
68f335d81d20b8e5e273310148c011aaf8c2d42f2902da31653f705090f2c86f6a1c872c40e776aebd0c394abc32b87efa0213c95292467fa3b5ba0b8c9a6d6f
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SSDEEP
98304:rgvrH5wKTU78I5MrnIp+elIZzF6WIhU5J5B16SgenYKJODmPFPYFxArinAFxDB:UrH5wKTUYV8qtv5BUSr0DmPFPaAmA5
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Modifies WinLogon for persistence
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UAC bypass
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Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Downloads MZ/PE file
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Event Triggered Execution: Image File Execution Options Injection
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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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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Modifies system executable filetype association
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Obfuscated with Agile.Net obfuscator
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Checks whether UAC is enabled
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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.
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Legitimate hosting services abused for malware hosting/C2
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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Suspicious use of NtCreateThreadExHideFromDebugger
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
3Change Default File Association
1Component Object Model Hijacking
1Image File Execution Options Injection
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Access Token Manipulation
1Create Process with Token
1Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
3Change Default File Association
1Component Object Model Hijacking
1Image File Execution Options Injection
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Access Token Manipulation
1Create Process with Token
1Impair Defenses
2Disable or Modify Tools
2Modify Registry
6