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General

  • Target

    ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae

  • Size

    617KB

  • Sample

    240108-blakvsaeh7

  • MD5

    aa12964f2f028b8b7b993775a0362d56

  • SHA1

    58887a7a4b76ff5fb4dd3baebb87a66cbdae6e93

  • SHA256

    ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae

  • SHA512

    8d6ca9e54eb2bfd6c567d756798df7549de2b3b7c2c42c0f7d58569090e3fc9925af2a6c91621c87b55aba24085c429aff0a63950ec1552e42eeaee66343ec50

  • SSDEEP

    12288:dzIZ3fY59RGtqgJWwgsTr0FnjmaQA1wnPUMupjQI:dzIpfEU7Gjf2PUn

Malware Config

Extracted

Family

orcus

C2

nonamedc.mcv.kr:8080

Mutex

2d5f462f00ed43cba223b57c0a9d157a

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    true

  • install_path

    %programfiles%\WSupdate\WSupdate.exe

  • reconnect_delay

    10000

  • registry_keyname

    WSupdate

  • taskscheduler_taskname

    WSupdates

  • watchdog_path

    Temp\WSupdate.exe

Targets

    • Target

      ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae

    • Size

      617KB

    • MD5

      aa12964f2f028b8b7b993775a0362d56

    • SHA1

      58887a7a4b76ff5fb4dd3baebb87a66cbdae6e93

    • SHA256

      ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae

    • SHA512

      8d6ca9e54eb2bfd6c567d756798df7549de2b3b7c2c42c0f7d58569090e3fc9925af2a6c91621c87b55aba24085c429aff0a63950ec1552e42eeaee66343ec50

    • SSDEEP

      12288:dzIZ3fY59RGtqgJWwgsTr0FnjmaQA1wnPUMupjQI:dzIpfEU7Gjf2PUn

    • Orcus

      Orcus is a Remote Access Trojan that is being sold on underground forums.

    • Orcus main payload

    • Orcurs Rat Executable

    • Checks computer location settings

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

    • Executes dropped EXE

    • Windows security modification

    • Adds Run key to start application

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks