Resubmissions

20/02/2023, 18:23

230220-w1vjssbh62 10

20/02/2023, 18:22

230220-wz3h1sbh59 10

General

  • Target

    wlient-built.exe

  • Size

    502KB

  • Sample

    230220-wz3h1sbh59

  • MD5

    d2069e2af97134b9b1a756754400a393

  • SHA1

    7f047216101c25a74d280fe720029597c4403159

  • SHA256

    a01469219fd37aa56923f2d6dee5b2026af25069ae44abb866a53b563add1971

  • SHA512

    84a266c7d273b319ab06d61e0394d76e985b887d5f9ba2293600911898c7f9f9e43dacbffbeb58b769fde5b738b5351e5d5ffefc7d1affebad452ed309433c3c

  • SSDEEP

    6144:NTEgdc0YlX7IxUpGREWrOUyJxZTP4bRwcEr7b8F94WkAtcTR3u:NTEgdfYexUW3G0w7QyWkAtcdu

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

staff-defines.at.ply.gg:444

Mutex

2e9761cb-ec4c-4ce1-a7ad-c3b29a10d95c

Attributes
  • encryption_key

    B502E88905C46E4DDCA7F9C490E1523FE06B4C01

  • install_name

    Okay.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    SenpaiClient

  • subdirectory

    SubDir

Targets

    • Target

      wlient-built.exe

    • Size

      502KB

    • MD5

      d2069e2af97134b9b1a756754400a393

    • SHA1

      7f047216101c25a74d280fe720029597c4403159

    • SHA256

      a01469219fd37aa56923f2d6dee5b2026af25069ae44abb866a53b563add1971

    • SHA512

      84a266c7d273b319ab06d61e0394d76e985b887d5f9ba2293600911898c7f9f9e43dacbffbeb58b769fde5b738b5351e5d5ffefc7d1affebad452ed309433c3c

    • SSDEEP

      6144:NTEgdc0YlX7IxUpGREWrOUyJxZTP4bRwcEr7b8F94WkAtcTR3u:NTEgdfYexUW3G0w7QyWkAtcdu

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v6

Tasks