General

  • Target

    NewProject1.exe

  • Size

    4.9MB

  • Sample

    240522-wcq7gaah52

  • MD5

    eace0ed3521967a36f02f3408a76689d

  • SHA1

    54210340f93b45b7bd0eff93da29151a5e846174

  • SHA256

    a2d773d335de672b8b525f26483081ef86bdfbb524afdf3dab5922e66d864e96

  • SHA512

    9646a69340e263150fc05519576fdc4d07ef51cf05f974dfd4f94b866e896255ee469207b6181b976d253a2497a753439c1ec639897dbe7c0fb89674eaba6448

  • SSDEEP

    98304:w409oEFvy98NF/4uhbfc7DdGnTYrhMiAV4i2BWWH:i/FayNFQKU7qstyKnJ

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1237112288494747648/RwLhzmD0ehxDiBdZsbgoSXVKoOkldpfaRP7ikjkQV9Ya8EVVXay-1UF3yarrrtlSnrpv

Targets

    • Target

      NewProject1.exe

    • Size

      4.9MB

    • MD5

      eace0ed3521967a36f02f3408a76689d

    • SHA1

      54210340f93b45b7bd0eff93da29151a5e846174

    • SHA256

      a2d773d335de672b8b525f26483081ef86bdfbb524afdf3dab5922e66d864e96

    • SHA512

      9646a69340e263150fc05519576fdc4d07ef51cf05f974dfd4f94b866e896255ee469207b6181b976d253a2497a753439c1ec639897dbe7c0fb89674eaba6448

    • SSDEEP

      98304:w409oEFvy98NF/4uhbfc7DdGnTYrhMiAV4i2BWWH:i/FayNFQKU7qstyKnJ

    • 44Caliber

      An open source infostealer written in C#.

    • Modifies WinLogon for persistence

    • Downloads MZ/PE file

    • Modifies AppInit DLL entries

    • 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.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks