Extracted

Extracted

• • Target

    FunChecker.zip

  • Size

    13.6MB

  • MD5

    669dea55a11d260b90159e727d0fb6e2

  • SHA1

    632d22f8eaacfbe16c12001e8df11c724d75d335

  • SHA256

    35a2a6f94f05c505f822208734c2d31fb69aede9f963103855b4721585290605

  • SHA512

    766d43c423df779cf9abc6819dd00342f2c8dfca054fbda466b256b5ff495cf58665d95dfe7e51af21f45c96b48ab94e155ef787feb072c3714df9c46e377b76

  • SSDEEP

    393216:8+/9XsBVCRuMjbDgzBufO1GjXo1kUyVl/+Y:b94ongz2XekfVll

  Score

  4^/10
  behavioral1

• • Target

    FunChecker.exe

  • Size

    13.6MB

  • MD5

    8b2fa6497ba4fc285a5545bda2e8cde6

  • SHA1

    31cec6fb97888c34c80af8ca73aa67456f68e4e3

  • SHA256

    5197fcb7b98a65eabf8151d847bb394eccd65a184f06a82f674a9b95e62e701c

  • SHA512

    fbf93ca3aecabdbb4a8c978037ca15f14b990fdd32c892e0fdd8bbb491bde8005fbf8326dbd89adf71e9c7cca7f1592dc7ef5694cc45181a50332ed6a594ee40

  • SSDEEP

    393216:jrmibLqxo6IKWmKF8tmZ4O/Qtu1dmoz2jqK8VPYAjV2:jr7b+xHI76tmZ4O4E1d99QAjQ

  Score

  10^/10

  umbralxwormbootkitevasionexecutionpersistenceratspywarestealertrojanvmprotect

  • Detect Umbral payload

  • Detect Xworm Payload

  • Modifies WinLogon for persistence

    persistence

  • Modifies Windows Defender Real-time Protection settings

    evasiontrojan

  • Modifies security service

    evasion

  • Process spawned unexpected child process

    This typically indicates the parent process was compromised via an exploit or macro.

  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

    stealerumbral

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

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

    evasion

  • Command and Scripting Interpreter: PowerShell

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    execution

  • Downloads MZ/PE file

  • Drops file in Drivers directory

  • Checks BIOS information in registry

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

  • Drops startup file

  • 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.

    evasion

  • Reads user/profile data of web browsers

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

    spywarestealer

  • VMProtect packed file

    Detects executables packed with VMProtect commercial packer.

    vmprotect

  • Adds Run key to start application

    persistence

  • Checks whether UAC is enabled

    evasiontrojan

  • 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.

  • Writes to the Master Boot Record (MBR)

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence

  • Drops file in System32 directory

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral2