Analysis

  • max time kernel
    46s
  • max time network
    47s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2025, 23:46

General

  • Target

    antinashook/WinRes32.exe

  • Size

    952KB

  • MD5

    0c7e5b83652dabf3503bf0001b329afa

  • SHA1

    b27452eb81f2e1b2958e3a9980fe35807f01f248

  • SHA256

    d2d26cfeffede48bad16333b3fb1098f2c713598c2eaf37f9894069fecdce2fe

  • SHA512

    5fe40e55382ff33642d55e738106d4e8fd78d6ee9129cb693d9c6c3025cdc30d855dba09bf4f3f932ba0e483d0e18a9eb079f357ce5c60399b54c19382007854

  • SSDEEP

    24576:g1Way//sMrF9Q0LDnjH+eQIn1J/bYbV2u6MxgndIXhagbA0Q:uyHsMrF9Q0vCeQIvTYbwu6HndIXYgbT

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Public%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/1vj9gviK

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies registry class 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 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\antinashook\WinRes32.exe
    "C:\Users\Admin\AppData\Local\Temp\antinashook\WinRes32.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Users\Admin\AppData\Local\Temp\WindowsServiceHost.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsServiceHost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:4612
    • C:\Users\Admin\AppData\Local\Temp\Riot.exe
      "C:\Users\Admin\AppData\Local\Temp\Riot.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3740
      • 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\Riot.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:380
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Riot.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2496
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3184
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3860
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Public\svchost.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2288
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:812
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4860

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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

      6d42b6da621e8df5674e26b799c8e2aa

      SHA1

      ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

      SHA256

      5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

      SHA512

      53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

      Filesize

      944B

      MD5

      34f595487e6bfd1d11c7de88ee50356a

      SHA1

      4caad088c15766cc0fa1f42009260e9a02f953bb

      SHA256

      0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

      SHA512

      10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

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

      Filesize

      944B

      MD5

      da185fddf7e751e39023edde12930f37

      SHA1

      657fcb7fda401b69d3bb97e7b6abf126ac36d4b2

      SHA256

      8928226805a92acd76d21e1a276176d9af3ca1ec31f14e45a2b4b88f4722cad5

      SHA512

      db7bc02a1bd86d587840a56334dee9cb80aa0a8635cd2eb1c490bc5466659350de4d625f320731e34fac235016515d0dddc05a6081149dc6c2e82c262be6b975

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

      Filesize

      79KB

      MD5

      71950ec079e71454b5d271184dd58d5d

      SHA1

      8d20ba26cece10021d43ebff34692e4991a00c8c

      SHA256

      26837090198630078059fc3a5dbafa01ba5ac223c8d380845a8a3d6368d49ccd

      SHA512

      9d4970ced13787823319de1903aa38f615c7390600f77d6fb013df2827d7ddff57e69750ccaa752799bba821bf7e58fd358dccf176b52d25295b68d3c044333d

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

      Filesize

      23KB

      MD5

      3b5ba1d090951d3d769836223db57393

      SHA1

      9b31771eba4dd8c7bbccdc2a50bb6dad87e42fc4

      SHA256

      898ac3faf4ecaad9b2fee90a2e5545b647e260c7a3f55c40babfa3c002170a19

      SHA512

      959552901b232666b1c4ff75729b18952c39da5672346779d45025daae108eba7a682fc9f41b0edb94c924f0a2c349db57e3ca3dbe5adb0b44c9d1c7d0888d5d

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zm2nyqr5.hvz.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk

      Filesize

      984B

      MD5

      98962167635ee463f8d09727cb6a132f

      SHA1

      0780b8fbed20a95ae0ac98d76aa892b229dbce74

      SHA256

      4fa9ea058bf9530d891de63fc6e8fe42c7cd257341b70488228d7a8131934358

      SHA512

      3948268fcfc64b46df1de428010c217f3467d530e394ec8bc91fa6e16f5fd5e7f1a6aa7ec28bd6dec934247576c65929438f56e2e0b436f467c4d46fe5e1345d

    • memory/380-27-0x000001B52D260000-0x000001B52D282000-memory.dmp

      Filesize

      136KB

    • memory/812-91-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-86-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-87-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-88-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-80-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-81-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-82-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-89-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-92-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/812-90-0x0000018B5ACA0000-0x0000018B5ACA1000-memory.dmp

      Filesize

      4KB

    • memory/3184-62-0x00000173C2660000-0x00000173C287C000-memory.dmp

      Filesize

      2.1MB

    • memory/3740-25-0x00000000006A0000-0x00000000006BA000-memory.dmp

      Filesize

      104KB

    • memory/3740-79-0x00007FFBD84F0000-0x00007FFBD8FB1000-memory.dmp

      Filesize

      10.8MB

    • memory/3740-24-0x00007FFBD84F3000-0x00007FFBD84F5000-memory.dmp

      Filesize

      8KB

    • memory/3740-95-0x00007FFBD84F0000-0x00007FFBD8FB1000-memory.dmp

      Filesize

      10.8MB

    • memory/3860-74-0x00000277F8980000-0x00000277F8B9C000-memory.dmp

      Filesize

      2.1MB