Analysis

  • max time kernel
    94s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-09-2024 16:53

General

  • Target

    Isolence.exe

  • Size

    402KB

  • MD5

    87e7cabc378978827ad35f11a7e3d311

  • SHA1

    eebf169bc83f6809229a8e2bd7925f99c216842f

  • SHA256

    441d5ad14a8d62643e2fe09046f6afe5b04b045c89dc3b213fcb695d5faa0063

  • SHA512

    2893da6232254d14d8038529e636f8178ef0b2143f640e6655de9186635b545d19713c843409840f8a1807adfe9ef10c344a42d448c9d71663f988d29467f039

  • SSDEEP

    6144:Vqg1BFe479zdJQxMh1PLm1Puu24ZmlLKSCbOymoeFKJCTownhl4K/X:Vx247OGQ3Z+WS2eVPnv4Kv

Malware Config

Signatures

  • Detect Umbral payload 2 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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.

  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 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
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Isolence.exe
    "C:\Users\Admin\AppData\Local\Temp\Isolence.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3844
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHoAZAB1ACMAPgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAHEAdABxACMAPgBbAFMAeQBzAHQAZQBtAC4AVwBpAG4AZABvAHcAcwAuAEYAbwByAG0AcwAuAE0AZQBzAHMAYQBnAGUAQgBvAHgAXQA6ADoAUwBoAG8AdwAoACcAUgBlAHMAdABhAHIAdAAgAHAAYwAnACwAJwAnACwAJwBPAEsAJwAsACcARQByAHIAbwByACcAKQA8ACMAZABpAGIAIwA+AA=="
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4556
    • C:\Users\Admin\AppData\Local\Temp\insolence.exe
      "C:\Users\Admin\AppData\Local\Temp\insolence.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:468
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\insolence.exe"
        3⤵
        • Views/modifies file attributes
        PID:1956
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\insolence.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:680
      • 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:864
      • 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:1056
      • 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:1020
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4080
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:1844
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:4104
          • 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:724
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:4004
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\insolence.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:2508
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:4236

      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

        1KB

        MD5

        e4d5f16dff1c6c4bd78c48253f411da2

        SHA1

        0fb7366585572b2cf4144d169302ba21d8e71ac3

        SHA256

        360fe2bf9d46f0e6bb35c1b41ba0d70c5f10a1a9b42e29d9cafea37de5964133

        SHA512

        27cb84814bf84d0db623e68c06b6391e63d985d5fe77a9d6ca9093329fbe73da490bb9bef67fea667d2d03b1d42ed5b4591f9e72c281c15965d0765c019d4b69

      • 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

        f4bf3ca8753d6bb9725419fec1ec74b9

        SHA1

        71fce9d17d1d92873236a9a827c52eb9e4827f3d

        SHA256

        ca8697e4ada4c3d4aac2899b8aad4052ccd605fccee05ee0a831368bde2f7417

        SHA512

        a55a107ae8bcf833ea674413c765cd55096146c9634dff41884fcc851c12fe47753308099525c99ae44883facfb668c8b292dd915263f34ebd1190391cb28a54

      • 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\Temp\__PSScriptPolicyTest_fwliiee2.kg3.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

        Filesize

        229KB

        MD5

        7553d23f56459f7a00e0c4d0bafaf675

        SHA1

        625bed675494bcba3860b57680bef8e09ba7429d

        SHA256

        d385a83b02ae2e7a2357a17abaa909406a88ad720faee797ad3fb11bdcc31200

        SHA512

        a577a2c02960b8fdb4614cf41cbde3da6e22f548e2a100885f58d763cb5c38893a21d07ebdc2046890e0cb9fcede09f7dd935d713e35ae184d679766c9ac3b41

      • memory/680-42-0x00000195F6490000-0x00000195F64B2000-memory.dmp

        Filesize

        136KB

      • memory/2752-65-0x0000027A6D340000-0x0000027A6D35E000-memory.dmp

        Filesize

        120KB

      • memory/2752-63-0x0000027A6DE00000-0x0000027A6DE76000-memory.dmp

        Filesize

        472KB

      • memory/2752-12-0x00007FF8E00D3000-0x00007FF8E00D5000-memory.dmp

        Filesize

        8KB

      • memory/2752-105-0x00007FF8E00D3000-0x00007FF8E00D5000-memory.dmp

        Filesize

        8KB

      • memory/2752-102-0x0000027A6DEE0000-0x0000027A6DEF2000-memory.dmp

        Filesize

        72KB

      • memory/2752-101-0x0000027A6D3C0000-0x0000027A6D3CA000-memory.dmp

        Filesize

        40KB

      • memory/2752-11-0x0000027A6B6A0000-0x0000027A6B6E0000-memory.dmp

        Filesize

        256KB

      • memory/2752-14-0x0000027A6BA90000-0x0000027A6BAA0000-memory.dmp

        Filesize

        64KB

      • memory/2752-64-0x0000027A6D360000-0x0000027A6D3B0000-memory.dmp

        Filesize

        320KB

      • memory/4556-17-0x0000000005AB0000-0x00000000060D8000-memory.dmp

        Filesize

        6.2MB

      • memory/4556-32-0x0000000006700000-0x000000000674C000-memory.dmp

        Filesize

        304KB

      • memory/4556-15-0x00000000030E0000-0x00000000030F0000-memory.dmp

        Filesize

        64KB

      • memory/4556-58-0x0000000008B50000-0x00000000090F4000-memory.dmp

        Filesize

        5.6MB

      • memory/4556-60-0x0000000007AA0000-0x0000000007B32000-memory.dmp

        Filesize

        584KB

      • memory/4556-46-0x0000000007F20000-0x000000000859A000-memory.dmp

        Filesize

        6.5MB

      • memory/4556-16-0x0000000003130000-0x0000000003166000-memory.dmp

        Filesize

        216KB

      • memory/4556-19-0x00000000059E0000-0x0000000005A46000-memory.dmp

        Filesize

        408KB

      • memory/4556-13-0x000000007496E000-0x000000007496F000-memory.dmp

        Filesize

        4KB

      • memory/4556-47-0x0000000006C00000-0x0000000006C1A000-memory.dmp

        Filesize

        104KB

      • memory/4556-31-0x00000000066C0000-0x00000000066DE000-memory.dmp

        Filesize

        120KB

      • memory/4556-30-0x0000000006150000-0x00000000064A4000-memory.dmp

        Filesize

        3.3MB

      • memory/4556-18-0x0000000005740000-0x0000000005762000-memory.dmp

        Filesize

        136KB

      • memory/4556-20-0x00000000060E0000-0x0000000006146000-memory.dmp

        Filesize

        408KB

      • memory/4556-118-0x000000007496E000-0x000000007496F000-memory.dmp

        Filesize

        4KB

      • memory/4556-122-0x00000000030E0000-0x00000000030F0000-memory.dmp

        Filesize

        64KB

      • memory/4556-123-0x00000000030E0000-0x00000000030F0000-memory.dmp

        Filesize

        64KB