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General

  • Target

    671fc7acb0f580ff3a30e09ebeee1e3205aa9a446f75616b542fbd0a3aa1b120

  • Size

    2.0MB

  • Sample

    240312-xvcbpsbb37

  • MD5

    0f115f24c7465cfa6a1679b3464f5771

  • SHA1

    131e8238bd8605714add657992ba6efdaf424604

  • SHA256

    671fc7acb0f580ff3a30e09ebeee1e3205aa9a446f75616b542fbd0a3aa1b120

  • SHA512

    0ec11d304004729c9493d847123e947beeb0ef1e4c5268ea542e36b247e958effb4f847baacecb444dd3bba507e455a5f621c0ee23fc8cedf0736a351832ad28

  • SSDEEP

    49152:LtM+Cjo7TVrVH/qinqKgGOpa2PGLN2/5bsPwWFVICIEGxMa27:C+/VrcoqK06vwEV2rQ

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      671fc7acb0f580ff3a30e09ebeee1e3205aa9a446f75616b542fbd0a3aa1b120

    • Size

      2.0MB

    • MD5

      0f115f24c7465cfa6a1679b3464f5771

    • SHA1

      131e8238bd8605714add657992ba6efdaf424604

    • SHA256

      671fc7acb0f580ff3a30e09ebeee1e3205aa9a446f75616b542fbd0a3aa1b120

    • SHA512

      0ec11d304004729c9493d847123e947beeb0ef1e4c5268ea542e36b247e958effb4f847baacecb444dd3bba507e455a5f621c0ee23fc8cedf0736a351832ad28

    • SSDEEP

      49152:LtM+Cjo7TVrVH/qinqKgGOpa2PGLN2/5bsPwWFVICIEGxMa27:C+/VrcoqK06vwEV2rQ

    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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

      200KB

    • MD5

      11a8185b4885be3b627a0231d08719ae

    • SHA1

      8b18353b7a52d66e4a868e4d12a21a0533fa0ee0

    • SHA256

      2b26a0dac779643189180d9e50ace8e299c5487a9a8cdaf4300cc64a9d674b33

    • SHA512

      091c82a9063b5371cc5d35e51dc73c956160477d0293137ae14fa4a7ec70ddc68a2dbd8601bbb8a80636b793c0e53b0887674a6bf3c383354d8722af083a4d6b

    • SSDEEP

      3072:pHOLgO34PMRjf0jtAV+vQoCNJpuumeuG3BYBI3PuHhCadEZE+:pEg8RIOVboCZuAwW

    • Stealc

      Stealc is an infostealer written in C++.

    • Downloads MZ/PE file

    • 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