General

  • Target

    ChromeSetup.exe

  • Size

    17.9MB

  • Sample

    231123-l43z8saa4v

  • MD5

    d5e9e6554281ea3efa2b1e40aeb9cb8b

  • SHA1

    4152ca6e3146483ab96a8cea6cad1285cd12e80f

  • SHA256

    3cbd732d1d9b72c12fd0b5338f6ea6417ec2d242f258fedab71fe48cdadccc2a

  • SHA512

    5ac8bc3817923304025e4c6f4f8090f1bc1a69cb8a9fc327aac47ecdcc62a4f3cc68ed7d77ac8aba3e1dbb9b83d9bd9d1cb7181e1bc9608486a4274ccd7c69b4

  • SSDEEP

    393216:VexY3xqC4zlB2qIbgpXAKCcOcfUz15rJE:0i8CClB2lUpX1BO8C5rJE

Malware Config

Targets

    • Target

      ChromeSetup.exe

    • Size

      17.9MB

    • MD5

      d5e9e6554281ea3efa2b1e40aeb9cb8b

    • SHA1

      4152ca6e3146483ab96a8cea6cad1285cd12e80f

    • SHA256

      3cbd732d1d9b72c12fd0b5338f6ea6417ec2d242f258fedab71fe48cdadccc2a

    • SHA512

      5ac8bc3817923304025e4c6f4f8090f1bc1a69cb8a9fc327aac47ecdcc62a4f3cc68ed7d77ac8aba3e1dbb9b83d9bd9d1cb7181e1bc9608486a4274ccd7c69b4

    • SSDEEP

      393216:VexY3xqC4zlB2qIbgpXAKCcOcfUz15rJE:0i8CClB2lUpX1BO8C5rJE

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

    • SectopRAT payload

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

    • Downloads MZ/PE file

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks