General

  • Target

    trainerv_7VxI5OpA.exe

  • Size

    4.3MB

  • Sample

    230406-tvalbsdh37

  • MD5

    3a0c3723ddc9efd1b7d584e10312576b

  • SHA1

    c695283f4205420f3d9812a6c4b7eb1f4b484063

  • SHA256

    f3dbe218bac2da1fabff8364428a0548f03e2c93442082d2c0ed1b2686040e32

  • SHA512

    b6a645802e9b90e6a0eda5e40e7b48dea2c80c76f59640b50c27c72e78115e31fd161ab98401740a0404382dddcf4d543ff99746bd68363dac61817a3e54e0d2

  • SSDEEP

    98304:QcPNiPea8mdie9Ohxt1rqaAA6YHxkjWvCK90w4LlY/+IbFEmFusXct:xNiPezmdie9MxtgdA6YHuWvB90wklq+V

Malware Config

Extracted

Family

gcleaner

C2

85.31.45.39

85.31.45.250

85.31.45.251

85.31.45.88

Targets

    • Target

      trainerv_7VxI5OpA.exe

    • Size

      4.3MB

    • MD5

      3a0c3723ddc9efd1b7d584e10312576b

    • SHA1

      c695283f4205420f3d9812a6c4b7eb1f4b484063

    • SHA256

      f3dbe218bac2da1fabff8364428a0548f03e2c93442082d2c0ed1b2686040e32

    • SHA512

      b6a645802e9b90e6a0eda5e40e7b48dea2c80c76f59640b50c27c72e78115e31fd161ab98401740a0404382dddcf4d543ff99746bd68363dac61817a3e54e0d2

    • SSDEEP

      98304:QcPNiPea8mdie9Ohxt1rqaAA6YHxkjWvCK90w4LlY/+IbFEmFusXct:xNiPezmdie9MxtgdA6YHuWvB90wklq+V

    • GCleaner

      GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • 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

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Bootkit

1
T1067

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Security Software Discovery

1
T1063

Tasks