Resubmissions

24/04/2021, 17:45

210424-5bjlqxnckn 10

23/04/2021, 20:52

210423-qdd2r6zat6 10

General

  • Target

    install.sfx.exe

  • Size

    5.1MB

  • Sample

    210424-5bjlqxnckn

  • MD5

    a92d87c9490b70f9f55bd2e959047071

  • SHA1

    5045e25219788fcea10a56ac49b968fc3601d926

  • SHA256

    03e8a1b3c1d2e34c85fe51990c508090fa771d25b93063c2153af2cde5caa749

  • SHA512

    24df7b63ea74aa854cf2101cb2d4fe9f3471b9bd06f217e1fee24593b864e635b77308c7adc7ea22aaf22413950f86db29d803e2216e85032d80ab293a8bf847

Malware Config

Extracted

Family

fickerstealer

C2

sodaandcoke.top:80

Targets

    • Target

      install.sfx.exe

    • Size

      5.1MB

    • MD5

      a92d87c9490b70f9f55bd2e959047071

    • SHA1

      5045e25219788fcea10a56ac49b968fc3601d926

    • SHA256

      03e8a1b3c1d2e34c85fe51990c508090fa771d25b93063c2153af2cde5caa749

    • SHA512

      24df7b63ea74aa854cf2101cb2d4fe9f3471b9bd06f217e1fee24593b864e635b77308c7adc7ea22aaf22413950f86db29d803e2216e85032d80ab293a8bf847

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • fickerstealer

      Ficker is an infostealer written in Rust and ASM.

    • Checks for common network interception software

      Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

    • Blocklisted process makes network request

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • 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.

    • Checks whether UAC is enabled

    • 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 v6

Tasks