Analysis

  • max time kernel
    136s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    05-08-2024 04:24

General

  • Target

    2f724138cbe4102823295fb51e7edb615b95a0eeae09434596e70f28bc0e64a9.exe

  • Size

    634KB

  • MD5

    8f27d14a78615dc0c6d100ca3f96a86a

  • SHA1

    3d267acd9ae52e0585e091826a57af1a53450ae6

  • SHA256

    2f724138cbe4102823295fb51e7edb615b95a0eeae09434596e70f28bc0e64a9

  • SHA512

    0af71aed92eda0f10cd435a542d3b6fbada85be89e4d94f5c029ee81b0c0167140cf801bfdaa816d479aa435741a337f827be61683ffd32367d1b1c2d276c7d7

  • SSDEEP

    6144:3kuuqTIKE3cPTWyG08SLGf5FKlunGth1mQVSomL3To7ovjqjvrKi5z5XThDLGfwk:3DuqhE3cPqy9uuunGtNSnP/OzHST

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1269302041445142548/7kHNPJkzcEXhevOi0GE-ta2E1mwfJ5-sBn7_at06BC13YjVrSo2F-y7QrDWzHj8zAjbY

Extracted

Family

xworm

C2

by-thus.gl.at.ply.gg:35938

Attributes
  • Install_directory

    %Temp%

  • install_file

    SSPinstaller.exe

Signatures

  • Detect Umbral payload 2 IoCs
  • Detect Xworm Payload 4 IoCs
  • Umbral

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

  • Xworm

    Xworm is a remote access trojan 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 8 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 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\2f724138cbe4102823295fb51e7edb615b95a0eeae09434596e70f28bc0e64a9.exe
    "C:\Users\Admin\AppData\Local\Temp\2f724138cbe4102823295fb51e7edb615b95a0eeae09434596e70f28bc0e64a9.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Users\Admin\AppData\Roaming\requestInstall.exe
      "C:\Users\Admin\AppData\Roaming\requestInstall.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2724
      • C:\Windows\system32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\requestInstall.exe"
        3⤵
        • Views/modifies file attributes
        PID:1532
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\requestInstall.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1432
      • 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:1692
      • 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:2780
      • 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:2984
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2328
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:1324
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:2080
          • 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:1036
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:348
          • C:\Windows\system32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Roaming\requestInstall.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:2480
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:2052
        • C:\Users\Admin\AppData\Roaming\SSPInstaller.exe
          "C:\Users\Admin\AppData\Roaming\SSPInstaller.exe"
          2⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1984
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\SSPInstaller.exe'
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:1732
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SSPInstaller.exe'
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:2476
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\SSPinstaller.exe'
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:1992
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SSPinstaller.exe'
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:2456
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SSPinstaller" /tr "C:\Users\Admin\AppData\Local\Temp\SSPinstaller.exe"
            3⤵
            • Scheduled Task/Job: Scheduled Task
            PID:1596
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {80D6EC34-D85E-44CE-81D6-88BC1A0D321A} S-1-5-21-2172136094-3310281978-782691160-1000:EXCFTDUU\Admin:Interactive:[1]
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:2856
        • C:\Users\Admin\AppData\Local\Temp\SSPinstaller.exe
          C:\Users\Admin\AppData\Local\Temp\SSPinstaller.exe
          2⤵
          • Executes dropped EXE
          PID:2952
        • C:\Users\Admin\AppData\Local\Temp\SSPinstaller.exe
          C:\Users\Admin\AppData\Local\Temp\SSPinstaller.exe
          2⤵
          • Executes dropped EXE
          PID:1616

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        7KB

        MD5

        2190232f6da77865fc758ea122ee7af8

        SHA1

        787a513e59dfc29cf693d96420367d372b371c16

        SHA256

        925b233ec38e5b1e15a683eb3820be9581ab2afea6083f38817c798e8cc4f8d9

        SHA512

        82981b6ea47a269f55dfbb07cd0b3d62cab8714c3d0514ddd256b618a3eebd61e8d741106b5da5b3113f8fe2bd61cadcc26a4ce269147fd1b865afba0ca60d87

      • C:\Users\Admin\AppData\Roaming\SSPInstaller.exe

        Filesize

        171KB

        MD5

        c9e72423dd94f42bf222d9a7fdb6eff9

        SHA1

        c724cd012c0c17a9222427d021fab0f3a0f25ac0

        SHA256

        8dcffd289f6b10088c345182b1d28ae492a3875b05af7f06dc0ff1d504461a16

        SHA512

        6265cfddc5320ef22954dae241a4988898ca6a80b48e1269f9b9df6ad22603dfd4f456d76b524062e904c00609ae9084728229872f8311120d9e71ed9db40b80

      • C:\Users\Admin\AppData\Roaming\requestInstall.exe

        Filesize

        338KB

        MD5

        4cd80597cf008592993ec6ec3780549c

        SHA1

        827a960dcc89c07cf8a80c97e2f2a281474d8c7f

        SHA256

        48c41a739d33db337ca33ab78b31e7bb13378508af1b2b8168594cc12268134b

        SHA512

        024fc64eaddc10370e64fe6531030e92a0c666c40737dccae071927c36fca86cb3c0828589014a6e3d1a108846e3bbde1be3c3afe2a996f9b843e9fb51b3b43d

      • memory/1432-19-0x000000001B610000-0x000000001B8F2000-memory.dmp

        Filesize

        2.9MB

      • memory/1432-20-0x0000000002240000-0x0000000002248000-memory.dmp

        Filesize

        32KB

      • memory/1616-90-0x0000000001060000-0x0000000001090000-memory.dmp

        Filesize

        192KB

      • memory/1692-26-0x000000001B790000-0x000000001BA72000-memory.dmp

        Filesize

        2.9MB

      • memory/1692-27-0x0000000001DF0000-0x0000000001DF8000-memory.dmp

        Filesize

        32KB

      • memory/1984-13-0x00000000011F0000-0x0000000001220000-memory.dmp

        Filesize

        192KB

      • memory/2488-9-0x0000000000A90000-0x0000000000AEA000-memory.dmp

        Filesize

        360KB

      • memory/2488-14-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2488-58-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2524-1-0x0000000000340000-0x00000000003E4000-memory.dmp

        Filesize

        656KB

      • memory/2524-0-0x000007FEF5B03000-0x000007FEF5B04000-memory.dmp

        Filesize

        4KB

      • memory/2952-88-0x00000000002F0000-0x0000000000320000-memory.dmp

        Filesize

        192KB