General
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Target
free_robux.exe
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Size
2.8MB
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Sample
240416-2g9ghaee23
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MD5
1535aa21451192109b86be9bcc7c4345
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SHA1
1af211c686c4d4bf0239ed6620358a19691cf88c
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SHA256
4641af6a0071e11e13ad3b1cd950e01300542c2b9efb6ae92ffecedde974a4a6
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SHA512
1762b29f7b26911a7e6d244454eac7268235e2e0c27cd2ca639b8acdde2528c9ddf202ed59ca3155ee1d6ad3deba559a6eaf4ed74624c68688761e3e404e54da
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SSDEEP
49152:5aA7f7tlVmdqK23H2bpHI4Qs5ABV9WRHZRsgI82lcHGAaKLinXBgJ:Q+VMkX224QsWBq5SfARGRgJ
Static task
static1
Malware Config
Targets
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Target
free_robux.exe
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Size
2.8MB
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MD5
1535aa21451192109b86be9bcc7c4345
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SHA1
1af211c686c4d4bf0239ed6620358a19691cf88c
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SHA256
4641af6a0071e11e13ad3b1cd950e01300542c2b9efb6ae92ffecedde974a4a6
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SHA512
1762b29f7b26911a7e6d244454eac7268235e2e0c27cd2ca639b8acdde2528c9ddf202ed59ca3155ee1d6ad3deba559a6eaf4ed74624c68688761e3e404e54da
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SSDEEP
49152:5aA7f7tlVmdqK23H2bpHI4Qs5ABV9WRHZRsgI82lcHGAaKLinXBgJ:Q+VMkX224QsWBq5SfARGRgJ
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Downloads MZ/PE file
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Drops file in Drivers directory
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Manipulates Digital Signatures
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
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Modifies Installed Components in the registry
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Modifies Windows Firewall
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Sets file execution options in registry
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ACProtect 1.3x - 1.4x DLL software
Detects file using ACProtect software.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Executes dropped EXE
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Loads dropped DLL
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Registers COM server for autorun
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Adds Run key to start application
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Checks for any installed AV software in registry
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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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Creates a large amount of network flows
This may indicate a network scan to discover remotely running services.
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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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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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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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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
4Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
4Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
5Pre-OS Boot
1Bootkit
1Subvert Trust Controls
2Install Root Certificate
1SIP and Trust Provider Hijacking
1