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Analysis

  • max time kernel
    95s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/09/2024, 20:58

General

  • Target

    3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe

  • Size

    229KB

  • MD5

    8887b7baff5156a22acd0a8f5f59d606

  • SHA1

    a77181461892efdd781892b9b676a78fce0615ae

  • SHA256

    3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea

  • SHA512

    0f0f2055533ae30088a1daeb30aee278bc3c4e2f319dbd2f436880b6386774535a7e30ae964cf09ad6dd8f5038bba0a1c6abf919c5c4e223ebf58c9dcf629a0b

  • SSDEEP

    6144:FloZM+rIkd8g+EtXHkv/iD4HzVViAfbopxUyzzql8rb8e1mTi:HoZtL+EP8HzVViAfbopxUyzzqo9

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer 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 4 IoCs

    Using powershell.exe command.

  • 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.

  • 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
  • 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\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
    "C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4596
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2656
    • C:\Windows\SYSTEM32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe"
      2⤵
      • Views/modifies file attributes
      PID:2952
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4372
    • 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⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4496
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2096
    • 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:4000
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3136
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:2496
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:1896
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:984
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:2296
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe" && pause
          2⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:2672
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:4860

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • 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

        77d622bb1a5b250869a3238b9bc1402b

        SHA1

        d47f4003c2554b9dfc4c16f22460b331886b191b

        SHA256

        f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

        SHA512

        d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

        Filesize

        948B

        MD5

        1d143d8f176947e4677211d4a25162e0

        SHA1

        8b595dccdc6dd126d7660cb074968b2e28ce7071

        SHA256

        5552727ed38222e454bf700c88d5b1d16823e2ffb095ecb0aa8c1d73b897eab8

        SHA512

        bc4096fd0f70abdf9286f44fa97d8dfb8773506c9358d9967fcade44f4686e647b0c394792bdf1c2df6888e0d20ce2e053a435f543c125629afcc90cbe394497

      • 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

        cf1b06b44fb8bc1a4f25c85e70937782

        SHA1

        c4adeae41a97fc11d407c398040dd109873fb2e5

        SHA256

        04ddc18714503a6c256830af58a731df9d9ad479e87663787e0fa92424c9b743

        SHA512

        07fcfc741b14ef3551fdc53a08e31020fd9e1d43ab637535a11e318c9f8d48ea37cae3913539838e74299952a868a7824982ad5dc887992686d45050cc1fc7cf

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3pxcek2u.1ap.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/4372-14-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

        Filesize

        10.8MB

      • memory/4372-9-0x000001FF55700000-0x000001FF55722000-memory.dmp

        Filesize

        136KB

      • memory/4372-15-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

        Filesize

        10.8MB

      • memory/4372-18-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

        Filesize

        10.8MB

      • memory/4372-3-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

        Filesize

        10.8MB

      • memory/4596-34-0x000001B3A8F70000-0x000001B3A8FC0000-memory.dmp

        Filesize

        320KB

      • memory/4596-33-0x000001B3A8FF0000-0x000001B3A9066000-memory.dmp

        Filesize

        472KB

      • memory/4596-35-0x000001B3905D0000-0x000001B3905EE000-memory.dmp

        Filesize

        120KB

      • memory/4596-1-0x000001B38E840000-0x000001B38E880000-memory.dmp

        Filesize

        256KB

      • memory/4596-0-0x00007FFC5CC03000-0x00007FFC5CC05000-memory.dmp

        Filesize

        8KB

      • memory/4596-72-0x000001B3A8E40000-0x000001B3A8E52000-memory.dmp

        Filesize

        72KB

      • memory/4596-71-0x000001B390600000-0x000001B39060A000-memory.dmp

        Filesize

        40KB

      • memory/4596-2-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

        Filesize

        10.8MB

      • memory/4596-90-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

        Filesize

        10.8MB