General

  • Target

    b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

  • Size

    2.7MB

  • Sample

    241120-zyf56stglk

  • MD5

    331dcdc60c30bfb0e6caf4d5a2b13af0

  • SHA1

    8791349b229c91fa0899cd0f669a9cc533aa4105

  • SHA256

    b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446

  • SHA512

    c5408605dd1fdb1f34c64eb31ef0d86685c75ddca02f78bcb762c6c799885652b3d091133fca0b0e890b3f9d0a325621d82c75cdc6c35f48bc404be109ed12e9

  • SSDEEP

    49152:P9eUwdL4wRqh7YqAVpymthcNRhuvo5NMAN7q4HmfT5RhJRr0UUK81Ezw6HdPd5is:85zgSt+svYNMAN7jOhJRDrwIdb

Malware Config

Extracted

Family

cryptbot

C2

oct3m.top

oct3e.top

Targets

    • Target

      b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446.exe

    • Size

      2.7MB

    • MD5

      331dcdc60c30bfb0e6caf4d5a2b13af0

    • SHA1

      8791349b229c91fa0899cd0f669a9cc533aa4105

    • SHA256

      b87ca65199e6eba3ee9185945cbd8ee3591c15c67ad24a6a1e9a0fe98be60446

    • SHA512

      c5408605dd1fdb1f34c64eb31ef0d86685c75ddca02f78bcb762c6c799885652b3d091133fca0b0e890b3f9d0a325621d82c75cdc6c35f48bc404be109ed12e9

    • SSDEEP

      49152:P9eUwdL4wRqh7YqAVpymthcNRhuvo5NMAN7q4HmfT5RhJRr0UUK81Ezw6HdPd5is:85zgSt+svYNMAN7jOhJRDrwIdb

    • CryptBot

      CryptBot is a C++ stealer distributed widely in bundle with other software.

    • Cryptbot family

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

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

    • Deletes itself

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks