General

  • Target

    file.exe

  • Size

    4.2MB

  • Sample

    241117-s3887atbjj

  • MD5

    f1aefbe49a406f12313f1c56deb2e3cd

  • SHA1

    182c4978fd940c4d7f504fe985477fe0512cf1f9

  • SHA256

    5e8e38f8b153083db2940a4a7e169f3118880ae012c12e87a7a976060d0b1b52

  • SHA512

    69e0f083e93b3c0a5ee153e4c6b89cb50bc5bbc4fc9c589606856de518e5705d54219f5e0fda01a6b9d53e03ab76836d335bc3d4a47047590438abd51c36ef78

  • SSDEEP

    98304:4otD52k8suSvvYB9QkFhQ1wl+iuIW9sjOE9hr0bTBB98:4oSkld4bQkF6Cl+Vh09hrkBBC

Malware Config

Targets

    • Target

      file.exe

    • Size

      4.2MB

    • MD5

      f1aefbe49a406f12313f1c56deb2e3cd

    • SHA1

      182c4978fd940c4d7f504fe985477fe0512cf1f9

    • SHA256

      5e8e38f8b153083db2940a4a7e169f3118880ae012c12e87a7a976060d0b1b52

    • SHA512

      69e0f083e93b3c0a5ee153e4c6b89cb50bc5bbc4fc9c589606856de518e5705d54219f5e0fda01a6b9d53e03ab76836d335bc3d4a47047590438abd51c36ef78

    • SSDEEP

      98304:4otD52k8suSvvYB9QkFhQ1wl+iuIW9sjOE9hr0bTBB98:4oSkld4bQkF6Cl+Vh09hrkBBC

    • CryptBot

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

    • Cryptbot family

    • Detects CryptBot payload

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

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

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • 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

    • Identifies Wine through registry keys

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Checks installed software on the system

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks