Extracted

Extracted

• • Target

    rootkit.exe

  • Size

    274KB

  • MD5

    87119ce97d460721e8c6cb98f990c780

  • SHA1

    eac69d7550546b7812eb5701e82e079ff780d93a

  • SHA256

    f01ae2632bb62a8f559472eaa31a863b82a04821dbdf8adbda7dab3db14d41cc

  • SHA512

    fce0177ad8df7622692919ff8493a9194b806774ca8508a4d28414d75e400bdf26b41818f12ad61a15a0860611d0d978d74660b970b9738c3d2b651e25290fcb

  • SSDEEP

    6144:WZL665pSvWs4dNwLIdh+JR5d3fFbeT8UumB2p3H1s93LZG9B:WlKWtnvKR51fy8VZKTo

  Score

  10^/10

  umbralxwormevasionexecutionpersistenceratspywarestealertrojan

  • Detect Umbral payload

  • Detect Xworm Payload

  • Modifies security service

    evasion

  • Suspicious use of NtCreateUserProcessOtherParentProcess

  • Umbral

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

    stealerumbral

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

  • Command and Scripting Interpreter: PowerShell

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

    execution

  • Drops file in Drivers directory

  • 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.

  • Drops startup file

  • Executes dropped EXE

  • Reads user/profile data of web browsers

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

    spywarestealer

  • Adds Run key to start application

    persistence

  • 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.

  • Drops file in System32 directory

  • Suspicious use of SetThreadContext

  behavioral1behavioral2