General

  • Target

    SecuriteInfo.com.Win32.Evo-gen.30879.16326.exe

  • Size

    6.3MB

  • Sample

    250211-rgv9rsvnfr

  • MD5

    5a29a65ddb18ddc1e7363f10cbdf3ad9

  • SHA1

    1dad241c181842554407c1af703cc657ec50ef53

  • SHA256

    d5162b8e644114e87a5c54b6125ab5c23031898ae3e75f754a8269321775eb93

  • SHA512

    d9dad1fbb57b3a39e17ed50ada2be7b87583467f377cc0485b4de378450c407edcb5610206b9b401ea9d2bdbde2e3dae925175e141f063a28dcb6a91d01b3806

  • SSDEEP

    98304:EWuH2NcKHIBsUkhVMhFukxaXRDQaFcSca9ChNg29NFMr9f3mEe9gq7pE/W:EWqscKHdTKhYk0X2w389gq90W

Malware Config

Extracted

Family

cryptbot

C2

http://home.fivepp5sb.top/joLepLgSzIBRhlkJbQYx17

Targets

    • Target

      SecuriteInfo.com.Win32.Evo-gen.30879.16326.exe

    • Size

      6.3MB

    • MD5

      5a29a65ddb18ddc1e7363f10cbdf3ad9

    • SHA1

      1dad241c181842554407c1af703cc657ec50ef53

    • SHA256

      d5162b8e644114e87a5c54b6125ab5c23031898ae3e75f754a8269321775eb93

    • SHA512

      d9dad1fbb57b3a39e17ed50ada2be7b87583467f377cc0485b4de378450c407edcb5610206b9b401ea9d2bdbde2e3dae925175e141f063a28dcb6a91d01b3806

    • SSDEEP

      98304:EWuH2NcKHIBsUkhVMhFukxaXRDQaFcSca9ChNg29NFMr9f3mEe9gq7pE/W:EWqscKHdTKhYk0X2w389gq90W

    • CryptBot

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

    • Cryptbot family

    • Enumerates VirtualBox registry keys

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

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks