Analysis

  • max time kernel
    18s
  • max time network
    23s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    21-08-2024 12:07

General

  • Target

    downloader.exe

  • Size

    70.1MB

  • MD5

    de8c4fd7ed1b7623ab3c9a4e55c17211

  • SHA1

    40f68eb4eb8194fa236f13e980d7d0940db0a9fe

  • SHA256

    192933cb274a687f0072e0db4064e4ee9080b95e303fd0ab9347760bc091e3c2

  • SHA512

    85c4bd56d6187c10baf3278de30268379b23131025e9fb6f21cf040d29c7291db6d3d1beefe0c9a7c814d932f34b0a22bf3443184f30dc4e0244eab2230c374b

  • SSDEEP

    393216:lWxQN89qQk4adiJCuE2fUCdod+OvqKkZHzXhJ/KTe8uiBUtkc0k3qEsGg4GUo3Nf:lWoI7zGi5ahWc3Im9

Malware Config

Extracted

Family

xworm

Version

5.0

C2

88.0.183.177:1603

88.0.172.65:1603

83.36.190.196:1603

83.38.30.219:1603

Mutex

XpRJMNcN9dWrZEo0

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    RuntimeBroker.exe

aes.plain

Extracted

Family

xworm

C2

88.0.183.177:1603

88.0.172.65:1603

83.36.190.196:1603

83.38.30.219:1603

Attributes
  • Install_directory

    %Temp%

  • install_file

    SecurityHealthSystray.exe

Signatures

  • Detect Xworm Payload 6 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 12 IoCs

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

  • Checks BIOS information in registry 2 TTPs 6 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Drops startup file 8 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 3 IoCs
  • Obfuscated with Agile.Net obfuscator 5 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Themida packer 11 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 3 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of SetWindowsHookEx 1 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\downloader.exe
    "C:\Users\Admin\AppData\Local\Temp\downloader.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "start "" "C:\Users\Admin\AppData\Local\Temp\sdsd_1.exe""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2428
      • C:\Users\Admin\AppData\Local\Temp\sdsd_1.exe
        "C:\Users\Admin\AppData\Local\Temp\sdsd_1.exe"
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Drops startup file
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2272
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "start "" "C:\Users\Admin\AppData\Local\Temp\notepadd.exe""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2856
      • C:\Users\Admin\AppData\Local\Temp\notepadd.exe
        "C:\Users\Admin\AppData\Local\Temp\notepadd.exe"
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of WriteProcessMemory
        PID:2872
        • C:\Users\Admin\RuntimeBroker.exe
          "C:\Users\Admin\RuntimeBroker.exe"
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3068
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\RuntimeBroker.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1788
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1984
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\RuntimeBroker.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1428
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2568
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\ProgramData\RuntimeBroker.exe"
            5⤵
            • Scheduled Task/Job: Scheduled Task
            PID:792
        • C:\Users\Admin\SecurityHealthSystray.exe
          "C:\Users\Admin\SecurityHealthSystray.exe"
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2104
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\SecurityHealthSystray.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1716
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SecurityHealthSystray.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2364
          • 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\SecurityHealthSystray.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2852
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SecurityHealthSystray.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2828
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SecurityHealthSystray" /tr "C:\Users\Admin\AppData\Local\Temp\SecurityHealthSystray.exe"
            5⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2356
        • C:\Users\Admin\WmiPrvSE.exe
          "C:\Users\Admin\WmiPrvSE.exe"
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2160
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\WmiPrvSE.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2956
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WmiPrvSE.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:780
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\WmiPrvSE.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1860
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WmiPrvSE.exe'
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1728
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WmiPrvSE" /tr "C:\Users\Public\WmiPrvSE.exe"
            5⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2816
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "start "" "C:\Users\Admin\AppData\Local\Temp\notepadd.exe""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2552
      • C:\Users\Admin\AppData\Local\Temp\notepadd.exe
        "C:\Users\Admin\AppData\Local\Temp\notepadd.exe"
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        PID:2816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab510.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar123A.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

    Filesize

    7.4MB

    MD5

    c694c8301947af8b5c65e6132581044b

    SHA1

    d1c7cbb77eff86db70df4feae1c2a849fb695b65

    SHA256

    0e18f1cd01243a43de369982b88a586b585f2dc34f0c8a942f54f21069e5c71c

    SHA512

    babe000cade9afcc76cf41b0bd064c0124d5a97ff4e3e52024e25ad39fe8f9f26ac3a4027f4194d19ead2a502df4dbc916f1b2f870a14d4a2ae28a3115804775

  • C:\Users\Admin\AppData\Local\Temp\sdsd_1.exe

    Filesize

    7.0MB

    MD5

    47d346922b3f771ddf7c8bb6561f7d4e

    SHA1

    9b9f255438265bf69e2aaf009500da72df23d416

    SHA256

    839519c001ba1fdb59d646c9ccc02e6d0db57d1948d6c6efd2b1a40607b9c99b

    SHA512

    4a8a5ad173d5c2b72d70fbd49e12df47fc6bd4e6b35f154ce6ce7f7ea7fc3de0a1422439c152221a1b000870e87299de58bc9cbcf68dbaf637377b4f6266e7d8

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

    Filesize

    7KB

    MD5

    b39be52b4d25d98e120efe678765d14e

    SHA1

    614f4f5e925f0d7668a5e3da9dd89116670aa735

    SHA256

    cea190ab620f311c9fc280728ddb801888df0d0baff8fc885691e95545323f34

    SHA512

    01f36eab3e19b67545306f58be34dd11e05a4435c0db19959bcc81ca1a7e4ae688f14ca53d7fad20e3f22a6a2a1ef8319feb1834c9cafcfcb8e37336a3c369cd

  • C:\Users\Admin\RuntimeBroker.exe

    Filesize

    36KB

    MD5

    51b33fef6848fd52da62f31ebe64e1a5

    SHA1

    740fc31cd7b69aacc11a2377f52ef725fc1d3d77

    SHA256

    058eb738227f17552cedd86fde447ff319d4b354bef777ff8149a9df30dc6e7f

    SHA512

    c0727a6ee074dff2b5ac36d086ec86660b287e515fe7422cfc947df47328553a99af0812126d2243f4fefd1a784881dc283e8bac65007b77d487756734a4c0d6

  • C:\Users\Admin\SecurityHealthSystray.exe

    Filesize

    244KB

    MD5

    f16d02b68f259d19e504bedd54d59e39

    SHA1

    d9102d345fceafd22b5b9a69f62e933f79a10a19

    SHA256

    b062135658f9e98a3dd7ae2cde12de8db784fd87cce6bf4c42aa0e9b3a775877

    SHA512

    ab0ea68c5dced9a6b2441f58a5ca6392071f82c700692c7438472be253c51eba2f44a0fdeebd18508af9a6e25ad689219c502cd2b7790a2bb7387a840375b007

  • C:\Users\Admin\WmiPrvSE.exe

    Filesize

    127KB

    MD5

    b57e530c98da33302694a3da8d773e31

    SHA1

    476a5c20a5ae2e644442057635ea2da77c72a311

    SHA256

    3ff319a9cc09b0b02a5881a55e15d309f47a8d615912434875a9346153bade6b

    SHA512

    80ef2f24e6090d9c6c9bf9f54d6796a0066f2c90abcdda16c994b3864096678d9f0a98ff2a479b36acc174bc2d7b3ac15b58b9eefbbe6d88a92364f19206fc60

  • \Users\Admin\AppData\Local\Temp\02b390f5-8dce-407c-af26-9d9d549adeb7\AgileDotNetRT64.dll

    Filesize

    4.2MB

    MD5

    05b012457488a95a05d0541e0470d392

    SHA1

    74f541d6a8365508c794ef7b4ac7c297457f9ce3

    SHA256

    1f77a0749ac730500f203b8c4d072587923ac679e184a3859aeb855c2a2e7d8d

    SHA512

    6d6e7b838d4425d49ac8d3738135374ef5357f0677b07cecb7afbf5feddc1997bf6dce68d48787eff8a74c4728def8880c8f01842eda35b5815fb561fa401ae6

  • memory/1716-101-0x000000001B790000-0x000000001BA72000-memory.dmp

    Filesize

    2.9MB

  • memory/1716-102-0x0000000001E70000-0x0000000001E78000-memory.dmp

    Filesize

    32KB

  • memory/1984-110-0x000000001B790000-0x000000001BA72000-memory.dmp

    Filesize

    2.9MB

  • memory/1984-111-0x00000000022D0000-0x00000000022D8000-memory.dmp

    Filesize

    32KB

  • memory/2104-59-0x0000000000D60000-0x0000000000DA2000-memory.dmp

    Filesize

    264KB

  • memory/2160-64-0x0000000000BD0000-0x0000000000BF4000-memory.dmp

    Filesize

    144KB

  • memory/2272-155-0x000007FEF6130000-0x000007FEF6B1C000-memory.dmp

    Filesize

    9.9MB

  • memory/2272-161-0x000007FEEDA20000-0x000007FEEE5A4000-memory.dmp

    Filesize

    11.5MB

  • memory/2272-122-0x000007FEF6133000-0x000007FEF6134000-memory.dmp

    Filesize

    4KB

  • memory/2272-27-0x000007FEEDA20000-0x000007FEEE5A4000-memory.dmp

    Filesize

    11.5MB

  • memory/2272-6-0x000007FEF6130000-0x000007FEF6B1C000-memory.dmp

    Filesize

    9.9MB

  • memory/2272-162-0x000007FEEDA20000-0x000007FEEE5A4000-memory.dmp

    Filesize

    11.5MB

  • memory/2272-4-0x000007FEF6133000-0x000007FEF6134000-memory.dmp

    Filesize

    4KB

  • memory/2272-35-0x000007FEF4970000-0x000007FEF4A9C000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-17-0x000007FEEDA20000-0x000007FEEE5A4000-memory.dmp

    Filesize

    11.5MB

  • memory/2272-5-0x0000000000AF0000-0x00000000011F8000-memory.dmp

    Filesize

    7.0MB

  • memory/2816-75-0x000007FEEC300000-0x000007FEECE84000-memory.dmp

    Filesize

    11.5MB

  • memory/2816-85-0x000007FEF4970000-0x000007FEF4A9C000-memory.dmp

    Filesize

    1.2MB

  • memory/2816-103-0x000007FEEC300000-0x000007FEECE84000-memory.dmp

    Filesize

    11.5MB

  • memory/2816-72-0x000007FEEC300000-0x000007FEECE84000-memory.dmp

    Filesize

    11.5MB

  • memory/2816-69-0x0000000000FD0000-0x0000000001746000-memory.dmp

    Filesize

    7.5MB

  • memory/2872-37-0x000007FEECE90000-0x000007FEEDA14000-memory.dmp

    Filesize

    11.5MB

  • memory/2872-63-0x000007FEECE90000-0x000007FEEDA14000-memory.dmp

    Filesize

    11.5MB

  • memory/2872-18-0x0000000001230000-0x00000000019A6000-memory.dmp

    Filesize

    7.5MB

  • memory/2872-25-0x000007FEECE90000-0x000007FEEDA14000-memory.dmp

    Filesize

    11.5MB

  • memory/2872-45-0x000007FEF4970000-0x000007FEF4A9C000-memory.dmp

    Filesize

    1.2MB

  • memory/3068-57-0x0000000000890000-0x00000000008A0000-memory.dmp

    Filesize

    64KB