Analysis

  • max time kernel
    148s
  • max time network
    142s
  • 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

    GTTR6_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 36 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\GTTR6_Everything-1.4.1.1026.x64-Setup2.exe
    "C:\Users\Admin\AppData\Local\Temp\GTTR6_Everything-1.4.1.1026.x64-Setup2.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:732
    • 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:116
      • 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:1224
        • 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:1464
      • 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:1900
        • 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:2444
    • 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:1960
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3136
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
        3⤵
        • Views/modifies file attributes
        PID:808
      • 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:4960
      • 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:2148
      • 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:2220
      • 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:4692
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4732
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:4788
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:3936
          • 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:2644
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:5508
          • 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:3988
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:4084
      • C:\Windows\system32\wbem\WmiApSrv.exe
        C:\Windows\system32\wbem\WmiApSrv.exe
        1⤵
          PID:5748

        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

          7e855de5861571374efc63dacc84638b

          SHA1

          54bc201ab83ab18ef4c8009b307ae7c6d041369e

          SHA256

          aaef6c1145f7994603ccc9477b801b498e77401e1a9e0e0e1e6a585c74fe7a2a

          SHA512

          db1e4028123b5991525d386d13b20011259e58db8cee4662714d6fe1b2ef48816f0fa2f8e36da3713a8aedb04cbaccf778aa4015cd2475b4371450cea73745bb

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

          Filesize

          64B

          MD5

          243108f8a57b9ea5e8449f382d21605e

          SHA1

          d2f0009ce295e6db9f6e57eb7e224a50f54710b4

          SHA256

          2709a3a45d831104e0c438e038954aa7f9a69c9ee7fb41d0945b3c2c3e03de94

          SHA512

          d9bfeb1f37d9c2f758e6c9e68cfa381023fe09c475e49b40cbfc5ef6b7486dc30a9888f4d50c410382633550a1292346dc2edd6c703688b499d2f1f09a517cf8

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

          Filesize

          944B

          MD5

          3332c2f747b79a54dc9f4867423e31c3

          SHA1

          de8440945ab0c382b6657dd2e6f50bbc2a4b73bd

          SHA256

          f8ddc8eddb53247304e5463829cbf8d1a420a77781237820efa0c94ab18612cd

          SHA512

          96fcc7c39335ce60da1f8db2ff9b62324d60080fb1a5a81262a26c311b78117bf85b481113800f88ac6a37b7ba26a7be510f3c098b26828c751974339a1e8835

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

          Filesize

          948B

          MD5

          c523adc639d16ffb0f96cebc63eed858

          SHA1

          12ff3728fe7a266d00bea61357e168d1ac35fb8b

          SHA256

          3f3c9377b171cf14fcf2bfe2ef6ab7753c1470c8fe803fb73317fa3732c55df1

          SHA512

          36dd1d5df9f67a708087ae024f4088fbe6ed11859c65c896f4c7b40631e418646295078abe0bd1e7062b3dd5f333d8cf86a8542ef719e4b14feec877c60839ba

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

          Filesize

          1KB

          MD5

          88be3bc8a7f90e3953298c0fdbec4d72

          SHA1

          f4969784ad421cc80ef45608727aacd0f6bf2e4b

          SHA256

          533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

          SHA512

          4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

        • 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_w1ont4ob.tkz.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/116-148-0x0000000002560000-0x000000000256C000-memory.dmp

          Filesize

          48KB

        • memory/116-22-0x0000000000430000-0x0000000000470000-memory.dmp

          Filesize

          256KB

        • memory/116-109-0x00007FF9A83F3000-0x00007FF9A83F5000-memory.dmp

          Filesize

          8KB

        • memory/116-14-0x00007FF9A83F3000-0x00007FF9A83F5000-memory.dmp

          Filesize

          8KB

        • memory/732-25-0x0000000000400000-0x000000000047C000-memory.dmp

          Filesize

          496KB

        • memory/1960-51-0x000002472A380000-0x000002472A3F6000-memory.dmp

          Filesize

          472KB

        • memory/1960-89-0x000002472A320000-0x000002472A32A000-memory.dmp

          Filesize

          40KB

        • memory/1960-90-0x000002472A480000-0x000002472A492000-memory.dmp

          Filesize

          72KB

        • memory/1960-53-0x000002472A4E0000-0x000002472A4FE000-memory.dmp

          Filesize

          120KB

        • memory/1960-108-0x00007FF9A83F0000-0x00007FF9A8EB1000-memory.dmp

          Filesize

          10.8MB

        • memory/1960-52-0x000002472A330000-0x000002472A380000-memory.dmp

          Filesize

          320KB

        • memory/1960-26-0x00007FF9A83F0000-0x00007FF9A8EB1000-memory.dmp

          Filesize

          10.8MB

        • memory/1960-24-0x000002470FC60000-0x000002470FCA0000-memory.dmp

          Filesize

          256KB

        • memory/4960-27-0x000002447FC30000-0x000002447FC52000-memory.dmp

          Filesize

          136KB