General

  • Target

    Uni.bat

  • Size

    409KB

  • Sample

    240510-hwgkgscg82

  • MD5

    e68bad461697f7b7cf70903472c46045

  • SHA1

    4e0157695c828732231b628de325addfa2494ad6

  • SHA256

    670312cec4a49d69d5f23f1ef68dbe6a6f3bebb20efe6d13425016025b2f0b34

  • SHA512

    c95f3c1913540877a46b2a823e73ea053f8277f4a8b4012da17625fbe04fac6b97e2163b690ddb67430aefdd557f833bb6a66fcb09fbc6464cb50182de1a5b36

  • SSDEEP

    12288:JpiREGJq35hmgR3MarfjRYqdOIb2+USXipX:nwpJvnWj9dOm2jJ

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Office04

C2

looking-memphis.gl.at.ply.gg:45119

Mutex

$Sxr-xwY9ZOTOHsQiE2cIYc

Attributes
  • encryption_key

    Rm3MuuwTtvGvQcDRaqti

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Uni.bat

    • Size

      409KB

    • MD5

      e68bad461697f7b7cf70903472c46045

    • SHA1

      4e0157695c828732231b628de325addfa2494ad6

    • SHA256

      670312cec4a49d69d5f23f1ef68dbe6a6f3bebb20efe6d13425016025b2f0b34

    • SHA512

      c95f3c1913540877a46b2a823e73ea053f8277f4a8b4012da17625fbe04fac6b97e2163b690ddb67430aefdd557f833bb6a66fcb09fbc6464cb50182de1a5b36

    • SSDEEP

      12288:JpiREGJq35hmgR3MarfjRYqdOIb2+USXipX:nwpJvnWj9dOm2jJ

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks