General

  • Target
    ZCYxSCA9cbn8voXjBSQrPnD8.exe
  • Size 2.5MB
  • Sample250123-v6kfcaxlbs
  • SHA256 fb110b1db7c02725d6cb0953cf153a2b5e158d358db136aece90ac06d79cb07d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

C2
  • http://stair585.com

rc4.plain

Targets

    • Target
      ZCYxSCA9cbn8voXjBSQrPnD8.exe
    • Size 2.5MB
    • SHA256 fb110b1db7c02725d6cb0953cf153a2b5e158d358db136aece90ac06d79cb07d
    • MD5 SHA1 SHA512 SSDEEP
    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks