General

  • Target

    84e33e3232dc792f6333dd8ebfbcab0f4c75bf3593d58a57e424fc30e84759a7

  • Size

    502KB

  • Sample

    240727-xsmpnatdmk

  • MD5

    fd8e1a617bc7a4bc6d62e32911c17042

  • SHA1

    a222614719614f3d8f78e449e3e3d98051b6f315

  • SHA256

    84e33e3232dc792f6333dd8ebfbcab0f4c75bf3593d58a57e424fc30e84759a7

  • SHA512

    44f1e24b6d6b747aea30e20409b719a583f0e385a12dcea5dbe37bed2b19842af08f149489f62c38d6a2a280bd85044ccd3384dbf22fba2b83a3f1b42989d2ee

  • SSDEEP

    6144:tTEgdc0YKX7IxUpGREWEvOXiLzZTPrbb2cEwgb8F9Gj5r+QcTR38:tTEgdfYTxUnbx2gDwj5r+Qcd8

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

me:4782

68.201.205.56:4782

Mutex

4e19accb-bc80-45aa-917d-d5dca33ad8f0

Attributes
  • encryption_key

    3B611D04AAFAB02940B8BD5BC8618AF575293F55

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    2996

  • startup_key

    system

  • subdirectory

    SubDir

Targets

    • Target

      84e33e3232dc792f6333dd8ebfbcab0f4c75bf3593d58a57e424fc30e84759a7

    • Size

      502KB

    • MD5

      fd8e1a617bc7a4bc6d62e32911c17042

    • SHA1

      a222614719614f3d8f78e449e3e3d98051b6f315

    • SHA256

      84e33e3232dc792f6333dd8ebfbcab0f4c75bf3593d58a57e424fc30e84759a7

    • SHA512

      44f1e24b6d6b747aea30e20409b719a583f0e385a12dcea5dbe37bed2b19842af08f149489f62c38d6a2a280bd85044ccd3384dbf22fba2b83a3f1b42989d2ee

    • SSDEEP

      6144:tTEgdc0YKX7IxUpGREWEvOXiLzZTPrbb2cEwgb8F9Gj5r+QcTR38:tTEgdfYTxUnbx2gDwj5r+Qcd8

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks