General

  • Target

    RobloxPlayerLauncher.exe

  • Size

    2.1MB

  • Sample

    240422-nsz6baah8z

  • MD5

    a37cac76cc02bf62462a514281e29047

  • SHA1

    5b430683926059ef58df924fd87638abb2d82eab

  • SHA256

    af4f0da458195e016f0a5e395df89c36f005bf24ca1ddd68a35373ba8ff66734

  • SHA512

    c94ffc5ba4a4abddb437f46115f1eb83e3b6a51224860e337f4286edd0e8442676f3b999a28234c34f61f983cbbc2363fb953306dfe1ef98d710752e0e29ef51

  • SSDEEP

    49152:NYuRj40EoNbMp3zEKzIATbqa3q2WrT2/MyPMQ3dSIDTrb6SMg:ucjCoNbGzEKzRPbP

Malware Config

Targets

    • Target

      RobloxPlayerLauncher.exe

    • Size

      2.1MB

    • MD5

      a37cac76cc02bf62462a514281e29047

    • SHA1

      5b430683926059ef58df924fd87638abb2d82eab

    • SHA256

      af4f0da458195e016f0a5e395df89c36f005bf24ca1ddd68a35373ba8ff66734

    • SHA512

      c94ffc5ba4a4abddb437f46115f1eb83e3b6a51224860e337f4286edd0e8442676f3b999a28234c34f61f983cbbc2363fb953306dfe1ef98d710752e0e29ef51

    • SSDEEP

      49152:NYuRj40EoNbMp3zEKzIATbqa3q2WrT2/MyPMQ3dSIDTrb6SMg:ucjCoNbGzEKzRPbP

    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Sets file execution options in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Registers COM server for autorun

    • 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.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

4
T1547.001

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Browser Extensions

1
T1176

Privilege Escalation

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

4
T1547.001

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Modify Registry

7
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

6
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Tasks