General

  • Target

    avg_tuneup_setup.exe

  • Size

    58.9MB

  • Sample

    240925-w8l8ds1apq

  • MD5

    96a9ad5f6962bbf688f7fec0c6822294

  • SHA1

    1c11e43bcc39a48eddff554d5ee153f0c2fd7267

  • SHA256

    ecd55f2007ce198b2cbcc094fe045875bd25a881a632f8d31561af34a4920bb5

  • SHA512

    e5839449de094164ed0df7e2ed5caf7b0fdd1367e0f52f9c1e6454407bf94f007b611dc170a2134f5a869abe8aad2ceb9f9c4c178f1597bc23da6e793cf3b5f4

  • SSDEEP

    1572864:FAGzjPqyxSx0b+AyflQ7dvx6acZ6zeiiPfvsAvoSU:vvCyQx0aAyNQ7dvszYzeiEljU

Malware Config

Targets

    • Target

      avg_tuneup_setup.exe

    • Size

      58.9MB

    • MD5

      96a9ad5f6962bbf688f7fec0c6822294

    • SHA1

      1c11e43bcc39a48eddff554d5ee153f0c2fd7267

    • SHA256

      ecd55f2007ce198b2cbcc094fe045875bd25a881a632f8d31561af34a4920bb5

    • SHA512

      e5839449de094164ed0df7e2ed5caf7b0fdd1367e0f52f9c1e6454407bf94f007b611dc170a2134f5a869abe8aad2ceb9f9c4c178f1597bc23da6e793cf3b5f4

    • SSDEEP

      1572864:FAGzjPqyxSx0b+AyflQ7dvx6acZ6zeiiPfvsAvoSU:vvCyQx0aAyNQ7dvszYzeiEljU

    • Uses Session Manager for persistence

      Creates Session Manager registry key to run executable early in system boot.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • 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.

    • Checks computer location settings

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks