General

  • Target

    extracted_payload-cleaned - Copy.exe

  • Size

    5.8MB

  • Sample

    250205-bcczma1nas

  • MD5

    b8a8c3137385fa40be47215961ba6630

  • SHA1

    688122f458e95518e2fae6b938cdb079f0991388

  • SHA256

    708f5f0d732a5cc463a7946cf86c7a79a7c673000779aa8fe5b1aadf24040a99

  • SHA512

    056de10cd6b798d18aa18e97cad645477149c562efc95d25bf724ab5f92454216c92f0c7717d7375181244d474513266146655ea6aad12bcab1f08e6835f1e4d

  • SSDEEP

    98304:EVzA+NolR3oceUQ1spbvuKSUJ17LrbH4q8y1iYVk1OUkh54oZdxkOHYSM:8PNO3K1spbmxcrbH4a1iYVk1O15DUC

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

v15.0 | Fifa23

C2

private123.duckdns.org:8808

dofucks.com:8808

Mutex

c398e98c-136e-4007-ab40-e179829f338c

Attributes
  • encryption_key

    C84CB6134701741C5122A14FACDB67C8CFA9C0AB

  • install_name

    .exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    $sxr-seroxen

Targets

    • Target

      extracted_payload-cleaned - Copy.exe

    • Size

      5.8MB

    • MD5

      b8a8c3137385fa40be47215961ba6630

    • SHA1

      688122f458e95518e2fae6b938cdb079f0991388

    • SHA256

      708f5f0d732a5cc463a7946cf86c7a79a7c673000779aa8fe5b1aadf24040a99

    • SHA512

      056de10cd6b798d18aa18e97cad645477149c562efc95d25bf724ab5f92454216c92f0c7717d7375181244d474513266146655ea6aad12bcab1f08e6835f1e4d

    • SSDEEP

      98304:EVzA+NolR3oceUQ1spbvuKSUJ17LrbH4q8y1iYVk1OUkh54oZdxkOHYSM:8PNO3K1spbmxcrbH4a1iYVk1O15DUC

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Seroxen family

    • Seroxen, Ser0xen

      Seroxen or SeroXen aka Ser0Xen is a trojan fist disovered in late 2022.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Enumerates connected drives

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks