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General

  • Target

    Firefox Installer.exe

  • Size

    342KB

  • Sample

    230204-fbs2nsce96

  • MD5

    699773f1df85496dfcf08df647e57a91

  • SHA1

    15b0e3ef49e5e1017c671d0a545d957637dcfa25

  • SHA256

    535ff53a4eb8cedab53d3368e7c5617ebb4ecb3b0fcc3f931196cf78c028f029

  • SHA512

    c6655ab0f2c1c1fd25444abda4039da4ea093d36ba212c95566a6a55125446b0a8f3e4ff331191508ed9fa45ffa6176763122b7c8f270fb438592557c6f0aaf5

  • SSDEEP

    6144:7aVWdyzOxeA1DfdwX3MmIOwB5dVow28rYv0dWPDRRAZKlsyQYUEj/ton5BNS3:7MROxdDfOnMmXiVR2EWPDRRAZKlsqj1l

Malware Config

Targets

    • Target

      Firefox Installer.exe

    • Size

      342KB

    • MD5

      699773f1df85496dfcf08df647e57a91

    • SHA1

      15b0e3ef49e5e1017c671d0a545d957637dcfa25

    • SHA256

      535ff53a4eb8cedab53d3368e7c5617ebb4ecb3b0fcc3f931196cf78c028f029

    • SHA512

      c6655ab0f2c1c1fd25444abda4039da4ea093d36ba212c95566a6a55125446b0a8f3e4ff331191508ed9fa45ffa6176763122b7c8f270fb438592557c6f0aaf5

    • SSDEEP

      6144:7aVWdyzOxeA1DfdwX3MmIOwB5dVow28rYv0dWPDRRAZKlsyQYUEj/ton5BNS3:7MROxdDfOnMmXiVR2EWPDRRAZKlsqj1l

    • 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 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.

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v6

Tasks