General

  • Target

    4b3812698f7d4a3cae6492b2f50be92eafbbfe5a2eb5ccde7197e8420cffa2ea

  • Size

    556KB

  • Sample

    221125-yk9pwsec2v

  • MD5

    80f8611262030fcc67944303ca618035

  • SHA1

    c5c6b591dc205af95082a396727856a67751fce5

  • SHA256

    4b3812698f7d4a3cae6492b2f50be92eafbbfe5a2eb5ccde7197e8420cffa2ea

  • SHA512

    17ea6ea4c3cbb524593c35e6f7fcf435c7cc5d7808fd03a6c8f3f72b11de91a1df480f4b3f5764cb44eae5fcef9c73046c4755da503fd21b6ddfb9b43b08aa81

  • SSDEEP

    12288:07Lo8Rs90X41cnOOWB2KpyYK4BVqZDx2mpmHPW9GROsI8w:07L1yMgcnOds44Fp2PWUDI8

Malware Config

Targets

    • Target

      4b3812698f7d4a3cae6492b2f50be92eafbbfe5a2eb5ccde7197e8420cffa2ea

    • Size

      556KB

    • MD5

      80f8611262030fcc67944303ca618035

    • SHA1

      c5c6b591dc205af95082a396727856a67751fce5

    • SHA256

      4b3812698f7d4a3cae6492b2f50be92eafbbfe5a2eb5ccde7197e8420cffa2ea

    • SHA512

      17ea6ea4c3cbb524593c35e6f7fcf435c7cc5d7808fd03a6c8f3f72b11de91a1df480f4b3f5764cb44eae5fcef9c73046c4755da503fd21b6ddfb9b43b08aa81

    • SSDEEP

      12288:07Lo8Rs90X41cnOOWB2KpyYK4BVqZDx2mpmHPW9GROsI8w:07L1yMgcnOds44Fp2PWUDI8

    • Modifies WinLogon for persistence

    • Modifies visiblity of hidden/system files in Explorer

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks