Overview

overview

10

Static

static

10

Estynettstart.exe

windows7-x64

10

Estynettstart.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Estynettstart.bat

  • Size

    1.4MB

  • Sample

    241028-tkrrvstckk

  • MD5

    401d6a0e3eeb52ba552aa2b8586df60f

  • SHA1

    256abb3298479ce5b77ef443869e372f8df2b8e0

  • SHA256

    08451edb5b692cedf6cbb2b41d532f375707d69b8670054b95f973782705db25

  • SHA512

    f2518203a3a51080befbba6e92422cd2d8d471a685f1393be8e920d24767acf2c27871d9a508f7249abfa367c530492500f336a8f430764819260c536f699fd3

  • SSDEEP

    24576:U2G/nvxW3Ww0tphBpEOYFciGLT5KIM+K1BVRSO6lGd4LmujFS9jF8:UbA30phXEtcKp+mVRxMGd+HjwQ

Score
10/10
dcratdiscoveryevasioninfostealerratspywarestealer

Malware Config

Targets

    • Target

      Estynettstart.bat

    • Size

      1.4MB

    • MD5

      401d6a0e3eeb52ba552aa2b8586df60f

    • SHA1

      256abb3298479ce5b77ef443869e372f8df2b8e0

    • SHA256

      08451edb5b692cedf6cbb2b41d532f375707d69b8670054b95f973782705db25

    • SHA512

      f2518203a3a51080befbba6e92422cd2d8d471a685f1393be8e920d24767acf2c27871d9a508f7249abfa367c530492500f336a8f430764819260c536f699fd3

    • SSDEEP

      24576:U2G/nvxW3Ww0tphBpEOYFciGLT5KIM+K1BVRSO6lGd4LmujFS9jF8:UbA30phXEtcKp+mVRxMGd+HjwQ

    Score
    10/10
    dcratdiscoveryevasioninfostealerratspywarestealer

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Disables Task Manager via registry modification

      evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks