General

  • Target

    f61ea31ba042cb4b9640ed853b792cf3a5984c56bac9f937fd638bb6e1efbe30.exe

  • Size

    4.1MB

  • Sample

    240516-ccwbmsff23

  • MD5

    5a1dcf56e56203dfbd69334ced1811a9

  • SHA1

    8f3e4f5662f95e339f6610bb48507f5f79c7ae3a

  • SHA256

    f61ea31ba042cb4b9640ed853b792cf3a5984c56bac9f937fd638bb6e1efbe30

  • SHA512

    0374c95df772c0e62e9d9ca8de9284f38541aa323f2d9f86a37907ace4073b80a49816cf82ae7a24652979898d67dfbf061e173a325e6688b8202dc0a493e002

  • SSDEEP

    98304:DrCNiB8ow0tjGRwMUUAJnC6DPNgwm1X3ykRpk8yR82N6G:DrCy8l0I4UGC6Dg3yk88npG

Malware Config

Targets

    • Target

      f61ea31ba042cb4b9640ed853b792cf3a5984c56bac9f937fd638bb6e1efbe30.exe

    • Size

      4.1MB

    • MD5

      5a1dcf56e56203dfbd69334ced1811a9

    • SHA1

      8f3e4f5662f95e339f6610bb48507f5f79c7ae3a

    • SHA256

      f61ea31ba042cb4b9640ed853b792cf3a5984c56bac9f937fd638bb6e1efbe30

    • SHA512

      0374c95df772c0e62e9d9ca8de9284f38541aa323f2d9f86a37907ace4073b80a49816cf82ae7a24652979898d67dfbf061e173a325e6688b8202dc0a493e002

    • SSDEEP

      98304:DrCNiB8ow0tjGRwMUUAJnC6DPNgwm1X3ykRpk8yR82N6G:DrCy8l0I4UGC6Dg3yk88npG

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • Windows security bypass

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables Discord URL observed in first stage droppers

    • Detects executables containing URLs to raw contents of a Github gist

    • Detects executables containing artifacts associated with disabling Widnows Defender

    • Detects executables referencing many varying, potentially fake Windows User-Agents

    • Modifies boot configuration data using bcdedit

    • UPX dump on OEP (original entry point)

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Possible attempt to disable PatchGuard

      Rootkits can use kernel patching to embed themselves in an operating system.

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Windows security modification

    • 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.

    • Manipulates WinMon driver.

      Roottkits write to WinMon to hide PIDs from being detected.

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks