General

  • Target

    GSClient_Setup_CS_1_6.exe

  • Size

    263.1MB

  • Sample

    240813-vhmwkavgrd

  • MD5

    c7067a7d7a096da7f12c5b0577ce1eda

  • SHA1

    1c989db53e9a3e6c38e4a4d44a8dd572f6a31e5d

  • SHA256

    9cc115b0e4a690b1d82a0e4ada34defb19c1bd246a45ba56295a3fbde0abe158

  • SHA512

    f64b6f53386abd4455d9df2db49ecf980f9358c3ad0b79cc553e66404421d98f23d28272c2275362ad95fe84b0ef6389be0dcff575f8497bcb63feb3bf0b5823

  • SSDEEP

    6291456:7UMXs+AiZ+VZXO+R/juaKFG3CX6whYIHxZJPN7kkI8u:QCGzO+R7wG3CKwhpxNIRL

Malware Config

Targets

    • Target

      GSClient_Setup_CS_1_6.exe

    • Size

      263.1MB

    • MD5

      c7067a7d7a096da7f12c5b0577ce1eda

    • SHA1

      1c989db53e9a3e6c38e4a4d44a8dd572f6a31e5d

    • SHA256

      9cc115b0e4a690b1d82a0e4ada34defb19c1bd246a45ba56295a3fbde0abe158

    • SHA512

      f64b6f53386abd4455d9df2db49ecf980f9358c3ad0b79cc553e66404421d98f23d28272c2275362ad95fe84b0ef6389be0dcff575f8497bcb63feb3bf0b5823

    • SSDEEP

      6291456:7UMXs+AiZ+VZXO+R/juaKFG3CX6whYIHxZJPN7kkI8u:QCGzO+R7wG3CKwhpxNIRL

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

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

    • Writes to the Master Boot Record (MBR)

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

MITRE ATT&CK Enterprise v15

Tasks