General

  • Target

    Ho1vjIrNuR8p.exe

  • Size

    36.5MB

  • Sample

    250110-z3m5aaxpct

  • MD5

    5201e854f87316750d6ca60210b304a9

  • SHA1

    f5262c2decfe6c65b6e6e988a97cc4ca758278f2

  • SHA256

    d2f7cfea1130facaa5271e8d837d785f3e4de3163455b7b5338019e4f578686f

  • SHA512

    d593f13c50d01aa954ae10dabc61de24da0e3b7def70ba2af0b9de17dba758aa5d5f43606c4cb38cb507bb52a3092d406f949ace0f96ed2c01bc133ac6731771

  • SSDEEP

    786432:s/RFyEW6zsqA//RFJoj79zu8/RF9U8/U1AHhyDhL2Uv64gvFPE0vG:wFK6zShFk79zuAFT/QKy9L6ZpvG

Malware Config

Targets

    • Target

      Ho1vjIrNuR8p.exe

    • Size

      36.5MB

    • MD5

      5201e854f87316750d6ca60210b304a9

    • SHA1

      f5262c2decfe6c65b6e6e988a97cc4ca758278f2

    • SHA256

      d2f7cfea1130facaa5271e8d837d785f3e4de3163455b7b5338019e4f578686f

    • SHA512

      d593f13c50d01aa954ae10dabc61de24da0e3b7def70ba2af0b9de17dba758aa5d5f43606c4cb38cb507bb52a3092d406f949ace0f96ed2c01bc133ac6731771

    • SSDEEP

      786432:s/RFyEW6zsqA//RFJoj79zu8/RF9U8/U1AHhyDhL2Uv64gvFPE0vG:wFK6zShFk79zuAFT/QKy9L6ZpvG

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

    • Downloads MZ/PE file

    • Stops running service(s)

    • 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.

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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)

    • Enumerates connected drives

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

    • Detected potential entity reuse from brand MICROSOFT.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks