General

  • Target

    6f329d63437d6ab286852568c3a14b26.exe

  • Size

    2.1MB

  • Sample

    240312-f3ptbsbd38

  • MD5

    6f329d63437d6ab286852568c3a14b26

  • SHA1

    0d2dce255fae521eacbaa9acf2ffbc7b8b6d04a1

  • SHA256

    f8b327bbf9e446f5a3fd3257527a35c167785419dfbee5bf7e77ddfab56fb9d5

  • SHA512

    dbad807581dd55aefd1ec23e7ffa3a75230a48aa032b1451227a21a66dcb9b225d3c471ad9a415baa55aa4f5bda7b543d5c5cb3e58ed89a5acc6db479a61aa11

  • SSDEEP

    49152:L+HOMskuADCe/MHPac5y8yLJbeAVlvnOz9m/BG8uNH:quMskuECe4P7uNlvOZmJ4

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      6f329d63437d6ab286852568c3a14b26.exe

    • Size

      2.1MB

    • MD5

      6f329d63437d6ab286852568c3a14b26

    • SHA1

      0d2dce255fae521eacbaa9acf2ffbc7b8b6d04a1

    • SHA256

      f8b327bbf9e446f5a3fd3257527a35c167785419dfbee5bf7e77ddfab56fb9d5

    • SHA512

      dbad807581dd55aefd1ec23e7ffa3a75230a48aa032b1451227a21a66dcb9b225d3c471ad9a415baa55aa4f5bda7b543d5c5cb3e58ed89a5acc6db479a61aa11

    • SSDEEP

      49152:L+HOMskuADCe/MHPac5y8yLJbeAVlvnOz9m/BG8uNH:quMskuECe4P7uNlvOZmJ4

    • Buer

      Buer is a new modular loader first seen in August 2019.

    • Stealc

      Stealc is an infostealer written in C++.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • UPX packed file

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Target

      $PLUGINSDIR/INetC.dll

    • Size

      21KB

    • MD5

      2b342079303895c50af8040a91f30f71

    • SHA1

      b11335e1cb8356d9c337cb89fe81d669a69de17e

    • SHA256

      2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

    • SHA512

      550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

    • SSDEEP

      384:KOoVVefeWsI7rsIquPLNN546o0Ac9khYLMkIX0+Gzyekv:4VVaeE7wIqyJN5i

    Score
    3/10
    • Target

      $TEMP/BroomSetup.exe

    • Size

      1.7MB

    • MD5

      eee5ddcffbed16222cac0a1b4e2e466e

    • SHA1

      28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

    • SHA256

      2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

    • SHA512

      8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

    • SSDEEP

      49152:YUnaQiKJ8N+AadA6mICFhNGffVCPi9NUko6jE:ZwKa+u6mICFSwPKDK

    Score
    7/10
    • UPX packed file

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

    • Target

      $TEMP/syncUpd.exe

    • Size

      282KB

    • MD5

      45d22efe66c3573da47197ff44dd54f2

    • SHA1

      5c426bc365f775fbb433e2219c0dd2d146fc4cfc

    • SHA256

      e1cd1d1df222eeb723bc22f7ae326c151ea73ae6ef7c571516efe0dc1e2546fb

    • SHA512

      f22efc1de7fa66019e82040298c5285e06a8d5e1d9ac1478aaf478b99814002ba027056db3528d9d5ef451e542b70cfe2a12f17503fdce9c9f779dfe92c0524f

    • SSDEEP

      3072:8P+bpittdpFpZltTlZoTIkLd1xBGBfqt+N548NXtTJs8+SGT:EpttPFzno1xcBqtse8XCj

    • Stealc

      Stealc is an infostealer written in C++.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

MITRE ATT&CK Enterprise v15

Tasks