General

  • Target

    custombuildsolara (1).exe

  • Size

    33.3MB

  • Sample

    240505-wnvc9sgg5t

  • MD5

    555d382ce13f71172115c7d1b3fa98df

  • SHA1

    67d8070cd8730b3a46cc70875c772c4729d6e70d

  • SHA256

    dc4c038f8fb030f0694ccfcde8e869b725fea683247e70005eb2fa25f9a82921

  • SHA512

    0b1d6d8a64e2f6bcb6eb9dd232237f77f00991a4d20d8fcb6b4fddf236767954d9ec3c4fe1cda05606a7263faca109616eadb8d8189a0d2f33900c7acf9fe7da

  • SSDEEP

    786432:hdM77JXb1ukCDeE6q+m5jVagaIQm2q+L5+u9Y2KN:hdI1EDX6q3Am2F3K

Malware Config

Targets

    • Target

      custombuildsolara (1).exe

    • Size

      33.3MB

    • MD5

      555d382ce13f71172115c7d1b3fa98df

    • SHA1

      67d8070cd8730b3a46cc70875c772c4729d6e70d

    • SHA256

      dc4c038f8fb030f0694ccfcde8e869b725fea683247e70005eb2fa25f9a82921

    • SHA512

      0b1d6d8a64e2f6bcb6eb9dd232237f77f00991a4d20d8fcb6b4fddf236767954d9ec3c4fe1cda05606a7263faca109616eadb8d8189a0d2f33900c7acf9fe7da

    • SSDEEP

      786432:hdM77JXb1ukCDeE6q+m5jVagaIQm2q+L5+u9Y2KN:hdI1EDX6q3Am2F3K

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Contacts a large (2386) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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.

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks