Resubmissions

17/10/2024, 00:08

241017-ae5a8avalj10

17/10/2024, 00:04

241017-ac1v1s1bph10

16/10/2024, 23:52

241016-3w4p8szgmc10

16/10/2024, 23:50

241016-3v4c3szgja10

16/10/2024, 22:52

241016-2tp9ds1dkk10

Analysis

  • max time kernel
    150s
  • max time network
    102s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    17/10/2024, 00:08

General

  • Target
    XWorm-5.6-main/Xworm V5.6.exe
  • Size 14.9MB
  • Sample241017-ae5a8avalj
  • SHA256 90f58865f265722ab007abb25074b3fc4916e927402552c6be17ef9afac96405
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • 127.0.0.1:8888

Mutex
  • maoR2mXoJbzjTaPs

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 3 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 58 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XWorm-5.6-main\Xworm V5.6.exe
    "C:\Users\Admin\AppData\Local\Temp\XWorm-5.6-main\Xworm V5.6.exe"
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3592
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe" /noconfig @"C:\Users\Admin\AppData\Local\Temp\mnndeezm\mnndeezm.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES1CC5.tmp" "C:\Users\Admin\AppData\Local\Temp\vbc798B48D95CB64246867DDF781DA4E9F.TMP"
        3⤵
          PID:1868
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:224
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x00000000000004D0 0x00000000000004C4
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2564
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
        1⤵
          PID:4764
        • C:\Users\Admin\Downloads\XClient.exe
          "C:\Users\Admin\Downloads\XClient.exe"
          1⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          PID:1428

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              RES1CC5.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\RES1CC5.tmp
              • Size 1KB
              • SHA256 a5f3ba72675b1fd95c8bc315c2d5f369dab6df27f1a2587f860fa1ed8411f283
              • MD5 SHA1 SHA512

              mnndeezm.0.vb

              • Path C:\Users\Admin\AppData\Local\Temp\mnndeezm\mnndeezm.0.vb
              • Size 78KB
              • SHA256 98e2393a4a018274410aa6cefc5d958e6f4ba8f909619310fa6b711997bace9e
              • MD5 SHA1 SHA512 SSDEEP

              mnndeezm.cmdline

              • Path C:\Users\Admin\AppData\Local\Temp\mnndeezm\mnndeezm.cmdline
              • Size 292B
              • SHA256 1c25bd4ae584bc2ce24621eba16ec016388cbc3de20c043dce9286d4535a213f
              • MD5 SHA1 SHA512

              vbc798B48D95CB64246867DDF781DA4E9F.TMP

              • Path C:\Users\Admin\AppData\Local\Temp\vbc798B48D95CB64246867DDF781DA4E9F.TMP
              • Size 1KB
              • SHA256 01902f1903d080c6632ae2209136e8e713e9fd408db4621ae21246b65bfea2ca
              • MD5 SHA1 SHA512

              XClient.exe

              • Path C:\Users\Admin\Downloads\XClient.exe
              • Size 32KB
              • SHA256 4b38b9ce5fb8080051015970eb58314fdfee9cf8cad406ea0cbc97ef6d090417
              • MD5 SHA1 SHA512 SSDEEP

              memory/1428-126-0x000000001B2B0000-0x000000001B2BA000-memory.dmp

              memory/1428-113-0x000000001B310000-0x000000001B332000-memory.dmp

              memory/1428-74-0x000000001C040000-0x000000001C160000-memory.dmp

              memory/1428-59-0x0000000000590000-0x000000000059E000-memory.dmp

              memory/3592-8-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-0-0x00007FF935933000-0x00007FF935935000-memory.dmp

              memory/3592-11-0x000001C1711C0000-0x000001C1711C9000-memory.dmp

              memory/3592-10-0x000001C171890000-0x000001C1718D6000-memory.dmp

              memory/3592-13-0x000001C171AD0000-0x000001C171AEE000-memory.dmp

              memory/3592-14-0x000001C1728D0000-0x000001C1728DB000-memory.dmp

              memory/3592-20-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-21-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-27-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-28-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-35-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-41-0x000001C17D0A0000-0x000001C17D208000-memory.dmp

              memory/3592-9-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-12-0x000001C1718E0000-0x000001C1718ED000-memory.dmp

              memory/3592-7-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-6-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-56-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-5-0x00007FF935933000-0x00007FF935935000-memory.dmp

              memory/3592-4-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-70-0x000001C172180000-0x000001C172202000-memory.dmp

              memory/3592-71-0x000001C172120000-0x000001C17214C000-memory.dmp

              memory/3592-72-0x000001C17D3F0000-0x000001C17D6D2000-memory.dmp

              memory/3592-73-0x000001C17CDC0000-0x000001C17CE72000-memory.dmp

              memory/3592-3-0x000001C172E00000-0x000001C172FF4000-memory.dmp

              memory/3592-2-0x00007FF935930000-0x00007FF9363F2000-memory.dmp

              memory/3592-1-0x000001C16DB20000-0x000001C16EA08000-memory.dmp