General

  • Target

    C4Loader.exe

  • Size

    856KB

  • Sample

    230403-lx9t7sdh99

  • MD5

    3b8f84a1a0761f8bab9d6b0a90e6949e

  • SHA1

    9c758991135d977d2660f1b814b973db0e119efc

  • SHA256

    2bcbbe13d000426f4be27871e3c472dbf33673551a684229e9234e6387b045e1

  • SHA512

    3bae19a2a3abddc66faf78cab3caf99aa1988607ca844294d37450a7eb3be2454ae1a4034e38df4dabef63a2f8fd5b9084fccfcaf3d2b72ff5c62cb79bdae2e1

  • SSDEEP

    3072:HnoTMG2OWGJAez/eyN/09XMT9THz4JHSV0h2sFeJOMkdIGq:HYfAebec09Q0ZwQCGq

Malware Config

Extracted

Family

aurora

C2

107.182.129.73:8081

Targets

    • Target

      C4Loader.exe

    • Size

      856KB

    • MD5

      3b8f84a1a0761f8bab9d6b0a90e6949e

    • SHA1

      9c758991135d977d2660f1b814b973db0e119efc

    • SHA256

      2bcbbe13d000426f4be27871e3c472dbf33673551a684229e9234e6387b045e1

    • SHA512

      3bae19a2a3abddc66faf78cab3caf99aa1988607ca844294d37450a7eb3be2454ae1a4034e38df4dabef63a2f8fd5b9084fccfcaf3d2b72ff5c62cb79bdae2e1

    • SSDEEP

      3072:HnoTMG2OWGJAez/eyN/09XMT9THz4JHSV0h2sFeJOMkdIGq:HYfAebec09Q0ZwQCGq

    • Aurora

      Aurora is a crypto wallet stealer written in Golang.

    • Modifies security service

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks