Extracted

Extracted

• • Target

    xxrkjufx.exe

  • Size

    158KB

  • MD5

    c3e0163f33f6f98ecc65bf60b9022561

  • SHA1

    de888c64e6662b2534d473932f04621b14b151d9

  • SHA256

    148ce380f43064c984912052dddb24ebce738607fcd942264133b849f9c024ec

  • SHA512

    c4875a56bec414de6277aaa0828778ef920aab8305af8e256a59c997824ce4aff016392ce16a493fa778b0a3e09206701d2b31b4f78c39ab45027f9eee418547

  • SSDEEP

    3072:LfFz74sSFhbKHj/3bOHNOOOOOOOHOOOOOOO/OOOOOOOk:LNAsyhbZOOOOOOOHOOOOOOO/OOOOOOO

  Score

  10^/10

  xwormexecutionrattrojanbootkitdefense_evasionpersistence

  • Detect Xworm Payload

  • Suspicious use of NtCreateUserProcessOtherParentProcess

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm

  • Xworm family

    xworm

  • Blocklisted process makes network request

  • Command and Scripting Interpreter: PowerShell

    Run Powershell and hide display window.

    execution

  • Downloads MZ/PE file

  • Sets service image path in registry

    persistence

  • 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

  • Indicator Removal: Clear Windows Event Logs

    Clear Windows Event Logs to hide the activity of an intrusion.

    defense_evasion

  • Enumerates connected drives

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

  • Legitimate hosting services abused for malware hosting/C2

  • 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 SetThreadContext

  behavioral1behavioral2