General

  • Target

    6fb4001217e696e9a91794e18b1beecfc8daede1871d8a61808652ce381a9645

  • Size

    2.0MB

  • Sample

    240312-va1sfsdg9z

  • MD5

    2874bedad32d752f617d3a95f591896b

  • SHA1

    3f35bb74cfe5c2d10698be1f20fe3298c1d847b1

  • SHA256

    6fb4001217e696e9a91794e18b1beecfc8daede1871d8a61808652ce381a9645

  • SHA512

    e53b8c61d31ee54802321776759de8946d26d518dc1a17131a9346004b861e855f54aafe44144ce6ef5a5e491b682dd5f238263a255fcdcc4b1a6f2935e962de

  • SSDEEP

    49152:LeAclgPTpLxf9xTEfIkSMg2WsQpn4e4cGF6lQSw9kq+NkX30udW:RlPlLx6IQcz4vFHHH023a

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      6fb4001217e696e9a91794e18b1beecfc8daede1871d8a61808652ce381a9645

    • Size

      2.0MB

    • MD5

      2874bedad32d752f617d3a95f591896b

    • SHA1

      3f35bb74cfe5c2d10698be1f20fe3298c1d847b1

    • SHA256

      6fb4001217e696e9a91794e18b1beecfc8daede1871d8a61808652ce381a9645

    • SHA512

      e53b8c61d31ee54802321776759de8946d26d518dc1a17131a9346004b861e855f54aafe44144ce6ef5a5e491b682dd5f238263a255fcdcc4b1a6f2935e962de

    • SSDEEP

      49152:LeAclgPTpLxf9xTEfIkSMg2WsQpn4e4cGF6lQSw9kq+NkX30udW:RlPlLx6IQcz4vFHHH023a

    • 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

    • 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