General

  • Target

    revosetup.exe

  • Size

    6.6MB

  • Sample

    240616-mm2aratfkk

  • MD5

    63150c4846bfbcf27fa70ccaa8a01943

  • SHA1

    bfe32dcc00b041e0007a883af1588f354bb9f032

  • SHA256

    a05acc9172e98ec6a6a7f923f5c648cc7a7c4e02bbcaaa5a6d9663229e662c24

  • SHA512

    7c0c8065c83529ffe9cf092a7ffb19f59252015d643bded9cf5459e6e6a4c582962ab6e36b330275a79649fa6e8d3da01cb95352870a52fa159bb278b967cd90

  • SSDEEP

    98304:MPyYn2kIIR7ABl27MwarecfhZzwStzDtAVl3gaSZmg4MPyDv0bSpkmmf6osFQaiS:q7Vty27MJzw6z8X4mgJSyNyos6ac4l

Malware Config

Targets

    • Target

      revosetup.exe

    • Size

      6.6MB

    • MD5

      63150c4846bfbcf27fa70ccaa8a01943

    • SHA1

      bfe32dcc00b041e0007a883af1588f354bb9f032

    • SHA256

      a05acc9172e98ec6a6a7f923f5c648cc7a7c4e02bbcaaa5a6d9663229e662c24

    • SHA512

      7c0c8065c83529ffe9cf092a7ffb19f59252015d643bded9cf5459e6e6a4c582962ab6e36b330275a79649fa6e8d3da01cb95352870a52fa159bb278b967cd90

    • SSDEEP

      98304:MPyYn2kIIR7ABl27MwarecfhZzwStzDtAVl3gaSZmg4MPyDv0bSpkmmf6osFQaiS:q7Vty27MJzw6z8X4mgJSyNyos6ac4l

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Sets file execution options in registry

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • 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)

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks