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General

  • Target

    ZCYxSCA9cbn8voXjBSQrPnD8.exe

  • Size

    2.5MB

  • Sample

    250123-v8nwjsyngq

  • MD5

    23b163180bc13aa5f430c2cf0413da12

  • SHA1

    c03af31d714b26d2bf254dd986208f20b37885dd

  • SHA256

    fb110b1db7c02725d6cb0953cf153a2b5e158d358db136aece90ac06d79cb07d

  • SHA512

    598fdd55f492a164c7b669e777d73a0e17b5db0e34d484cae591743699d524b794a6794db9cc0616ccc2412cc9557fa12d8c3780dbf62b8635db76698bbbd77b

  • SSDEEP

    49152:1XaijDDioKqQCOlNBSVPtiCdCLBHkJ2MHjFVWquPgmNW5klRBIdltPAFEP:nDHKRstiCdGHHIjFVWhjNW5uQo6P

Malware Config

Extracted

Family

stealc

C2

http://stair585.com

rc4.plain

Targets

    • Target

      ZCYxSCA9cbn8voXjBSQrPnD8.exe

    • Size

      2.5MB

    • MD5

      23b163180bc13aa5f430c2cf0413da12

    • SHA1

      c03af31d714b26d2bf254dd986208f20b37885dd

    • SHA256

      fb110b1db7c02725d6cb0953cf153a2b5e158d358db136aece90ac06d79cb07d

    • SHA512

      598fdd55f492a164c7b669e777d73a0e17b5db0e34d484cae591743699d524b794a6794db9cc0616ccc2412cc9557fa12d8c3780dbf62b8635db76698bbbd77b

    • SSDEEP

      49152:1XaijDDioKqQCOlNBSVPtiCdCLBHkJ2MHjFVWquPgmNW5klRBIdltPAFEP:nDHKRstiCdGHHIjFVWhjNW5uQo6P

    • 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