General

  • Target

    3db145a70f75ceea54337275315ac77dcd61e7ae9cf38f240d17e196194b57cb

  • Size

    127KB

  • Sample

    221123-mrb7eseg82

  • MD5

    8786c0e7879e8351899954722ac3b2db

  • SHA1

    d26fbd63cc89fcd387e1bb3710dc66a00764a679

  • SHA256

    3db145a70f75ceea54337275315ac77dcd61e7ae9cf38f240d17e196194b57cb

  • SHA512

    2b6ee48a70dd1b86f4219c9791c26842ce1ac87269f17547818fc8ea29f5d9562528cef52c003cdfe0f5b005c9c542625444db67be4c42611a3c31c55c643931

  • SSDEEP

    1536:snqdu3rbBGy3G8V0iuoKYMUYU6U5jUdPQc+n35KZg8/nouy8Iu:sqYMPsLMYjUtQl78vout

Malware Config

Targets

    • Target

      3db145a70f75ceea54337275315ac77dcd61e7ae9cf38f240d17e196194b57cb

    • Size

      127KB

    • MD5

      8786c0e7879e8351899954722ac3b2db

    • SHA1

      d26fbd63cc89fcd387e1bb3710dc66a00764a679

    • SHA256

      3db145a70f75ceea54337275315ac77dcd61e7ae9cf38f240d17e196194b57cb

    • SHA512

      2b6ee48a70dd1b86f4219c9791c26842ce1ac87269f17547818fc8ea29f5d9562528cef52c003cdfe0f5b005c9c542625444db67be4c42611a3c31c55c643931

    • SSDEEP

      1536:snqdu3rbBGy3G8V0iuoKYMUYU6U5jUdPQc+n35KZg8/nouy8Iu:sqYMPsLMYjUtQl78vout

    • Modifies WinLogon for persistence

    • Modifies system executable filetype association

    • Modifies visibility of file extensions in Explorer

    • Modifies visiblity of hidden/system files in Explorer

    • UAC bypass

    • Disables RegEdit via registry modification

    • Disables use of System Restore points

    • Executes dropped EXE

    • Sets file execution options in registry

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Change Default File Association

1
T1042

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

2
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

9
T1112

Hidden Files and Directories

2
T1158

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Discovery

System Information Discovery

3
T1082

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

Remote System Discovery

1
T1018

Impact

Inhibit System Recovery

1
T1490

Tasks