Analysis

  • max time kernel
    94s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 21:34

General

  • Target

    XClient.exe

  • Size

    34KB

  • MD5

    c066e2162e9aa7dd672e4c20c1c8c9eb

  • SHA1

    20c061ca760ed127dd7c43ad5147064af4009d93

  • SHA256

    f2c139ededc6158ae672aa2ae484cbdf503517af131062ddd80a106dd7827557

  • SHA512

    aa75920ffef507b16ed23f7c4033374ec5b1ae56d9f6f32db6a0b632366a031280be4b6c2fed4ef895fda459899dccb62def861ffb90d287a23112a9d56a4adf

  • SSDEEP

    384:PxXv9qZ/QXokXcjlcTB+Gx//wD7rXVhLHzVdfgkBE2jHuh/58pkFyHBLTLZwYGoy:JXB2GxebHzDyCw/VFye9F+Ojh7yaEr4

Malware Config

Extracted

Family

xworm

Version

5.0

C2

cheflilou-43810.portmap.host:43810

Mutex

JQrIKWspeoVSCrcE

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

aes.plain

Signatures

  • Detect Neshta payload 5 IoCs
  • Detect Umbral payload 3 IoCs
  • Detect Xworm Payload 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Umbral

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

  • Umbral family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2196
    • C:\Users\Admin\AppData\Local\Temp\ywidxm.exe
      "C:\Users\Admin\AppData\Local\Temp\ywidxm.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system executable filetype association
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1872
      • C:\Users\Admin\AppData\Local\Temp\3582-490\ywidxm.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\ywidxm.exe"
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:776
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1532
        • C:\Windows\SYSTEM32\attrib.exe
          "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\3582-490\ywidxm.exe"
          4⤵
          • Views/modifies file attributes
          PID:2160
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3582-490\ywidxm.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4364
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2456
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1608
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2484
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" os get Caption
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1964
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" computersystem get totalphysicalmemory
          4⤵
            PID:3484
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic.exe" csproduct get uuid
            4⤵
              PID:4252
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
              4⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:2320
            • C:\Windows\System32\Wbem\wmic.exe
              "wmic" path win32_VideoController get name
              4⤵
              • Detects videocard installed
              PID:3388
            • C:\Windows\SYSTEM32\cmd.exe
              "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\3582-490\ywidxm.exe" && pause
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Suspicious use of WriteProcessMemory
              PID:1172
              • C:\Windows\system32\PING.EXE
                ping localhost
                5⤵
                • System Network Configuration Discovery: Internet Connection Discovery
                • Runs ping.exe
                PID:876

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

        Filesize

        2KB

        MD5

        d85ba6ff808d9e5444a4b369f5bc2730

        SHA1

        31aa9d96590fff6981b315e0b391b575e4c0804a

        SHA256

        84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

        SHA512

        8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        1KB

        MD5

        d3235ed022a42ec4338123ab87144afa

        SHA1

        5058608bc0deb720a585a2304a8f7cf63a50a315

        SHA256

        10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

        SHA512

        236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        1KB

        MD5

        d8a781a8d47e148c742681deaa63ac8d

        SHA1

        49594c22cc6183605b96b715a0c00c1bf1bbb468

        SHA256

        994622f9d048bce32fd23dec62a532b965883a169722f36ce72a639e29b8303c

        SHA512

        f32989be9a903764c4ed3b8ab4e61a677ca4d37031200530164d192c25c269143cb127a73380ea0d88ac81f1a3a7c141d77fbd74c211c9d969bf2af9202e7fbe

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        944B

        MD5

        77d622bb1a5b250869a3238b9bc1402b

        SHA1

        d47f4003c2554b9dfc4c16f22460b331886b191b

        SHA256

        f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

        SHA512

        d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        948B

        MD5

        966914e2e771de7a4a57a95b6ecfa8a9

        SHA1

        7a32282fd51dd032967ed4d9a40cc57e265aeff2

        SHA256

        98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

        SHA512

        dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

      • C:\Users\Admin\AppData\Local\Temp\3582-490\ywidxm.exe

        Filesize

        229KB

        MD5

        13a44ae702c2f8ec11472d6b965b8786

        SHA1

        dc410e60fce3498499d148c37d54dc25ca502aa4

        SHA256

        9ed2f2b8b28c3d25bb88732ffb42cb352552cf73448372ca2566511bfb8cd401

        SHA512

        63116b191589b5209e80206a9a4454e56c522fd3d53655abb0c4dfe4b08f2a381cd9a3b52e97167dfd2753f9ca69ba8ff6e9e14915c00d7e610fc477dc2d453f

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_umahj3af.fnl.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\ywidxm.exe

        Filesize

        270KB

        MD5

        f76710d1d5a29fca7e79fe4edf8c91d8

        SHA1

        6fb0a847757bbb11b6879faee49ba2206d062c37

        SHA256

        9a1e6e1d123a3989318515c475e04f02ece3d85eade3ab77c6c3baf928abb1e4

        SHA512

        6735e5431f6dee3c3d20612440fb0b320f6330b58c54d178683c61874335749a90f8992662f250ed8286e26e4eae1ccf13e145e53b5fb43a5bff2678a73511b1

      • memory/776-56-0x0000026CC7230000-0x0000026CC72A6000-memory.dmp

        Filesize

        472KB

      • memory/776-152-0x0000026CAE8C0000-0x0000026CAE8CA000-memory.dmp

        Filesize

        40KB

      • memory/776-29-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

        Filesize

        10.8MB

      • memory/776-28-0x0000026CACAE0000-0x0000026CACB20000-memory.dmp

        Filesize

        256KB

      • memory/776-199-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

        Filesize

        10.8MB

      • memory/776-57-0x0000026CC72B0000-0x0000026CC7300000-memory.dmp

        Filesize

        320KB

      • memory/776-58-0x0000026CAE890000-0x0000026CAE8AE000-memory.dmp

        Filesize

        120KB

      • memory/776-153-0x0000026CAE8F0000-0x0000026CAE902000-memory.dmp

        Filesize

        72KB

      • memory/1872-200-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1872-201-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1872-202-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1872-204-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2196-6-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

        Filesize

        10.8MB

      • memory/2196-7-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

        Filesize

        10.8MB

      • memory/2196-1-0x0000000000A00000-0x0000000000A0E000-memory.dmp

        Filesize

        56KB

      • memory/2196-0-0x00007FFCE9D23000-0x00007FFCE9D25000-memory.dmp

        Filesize

        8KB

      • memory/4364-39-0x00000183A7240000-0x00000183A7262000-memory.dmp

        Filesize

        136KB