Analysis

  • max time kernel
    143s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/09/2024, 10:45

General

  • Target
    7z2408x64.appx
  • Size 8.6MB
  • Sample240926-mtklkssglp
  • SHA256 2c59f3552a77d2c9527970ae99e204ec279756ac24815a899ab43356420057e7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • NetSupport

    NetSupport is a remote access tool sold as a legitimate system administration software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell start shell:AppsFolder\7-Zip_xeys6vq55fk2w!NOTEPAD
    1⤵
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5056
  • C:\Program Files\WindowsApps\7-Zip_4.12.145.0_x64__xeys6vq55fk2w\PsfLauncher64.exe
    "C:\Program Files\WindowsApps\7-Zip_4.12.145.0_x64__xeys6vq55fk2w\PsfLauncher64.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3784
    • C:\Windows\System32\WindowsPowerShell\v1.0\Powershell.exe
      Powershell.exe -ExecutionPolicy RemoteSigned -file "C:\Program Files\WindowsApps\7-Zip_4.12.145.0_x64__xeys6vq55fk2w\StartingScriptWrapper.ps1" "Powershell.exe -ExecutionPolicy RemoteSigned -file '.\sarghsrtyjsrtyhjwsy.ps1'"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2216
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy RemoteSigned -file .\sarghsrtyjsrtyhjwsy.ps1
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1140
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe" /c "VFS\ProgramFilesX64\13\13.exe e VFS\ProgramFilesX64\7-zip3.7z -oC:\Users\Public\7-zip -p7-zip3"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4816
          • C:\Program Files\WindowsApps\7-Zip_4.12.145.0_x64__xeys6vq55fk2w\VFS\ProgramFilesX64\13\13.exe
            VFS\ProgramFilesX64\13\13.exe e VFS\ProgramFilesX64\7-zip3.7z -oC:\Users\Public\7-zip -p7-zip3
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: CmdExeWriteProcessMemorySpam
            • Suspicious use of AdjustPrivilegeToken
            PID:3604
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe" /c "VFS\ProgramFilesX64\13\13.exe e C:\Users\Public\7-zip\7-zip2.7z -oC:\Users\Public\7-zip -p7-zip2"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4860
          • C:\Program Files\WindowsApps\7-Zip_4.12.145.0_x64__xeys6vq55fk2w\VFS\ProgramFilesX64\13\13.exe
            VFS\ProgramFilesX64\13\13.exe e C:\Users\Public\7-zip\7-zip2.7z -oC:\Users\Public\7-zip -p7-zip2
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: CmdExeWriteProcessMemorySpam
            • Suspicious use of AdjustPrivilegeToken
            PID:3644
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe" /c "VFS\ProgramFilesX64\13\13.exe e C:\Users\Public\7-zip\7-zip1.7z -oC:\Users\Public\7-zip -p7-zip1"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2968
          • C:\Program Files\WindowsApps\7-Zip_4.12.145.0_x64__xeys6vq55fk2w\VFS\ProgramFilesX64\13\13.exe
            VFS\ProgramFilesX64\13\13.exe e C:\Users\Public\7-zip\7-zip1.7z -oC:\Users\Public\7-zip -p7-zip1
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: CmdExeWriteProcessMemorySpam
            • Suspicious use of AdjustPrivilegeToken
            PID:4368
        • C:\Users\Public\7-zip\7-zip.exe
          "C:\Users\Public\7-zip\7-zip.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          PID:4804
        • C:\Users\Public\7-zip\7z2408-x64.exe
          "C:\Users\Public\7-zip\7z2408-x64.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:4776
    • C:\Program Files\WindowsApps\7-Zip_4.12.145.0_x64__xeys6vq55fk2w\VFS\ProgramFilesX64\PsfRunDll64.exe
      "PsfRunDll64.exe"
      2⤵
        PID:4460

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 64B
          • SHA256 cc07a2c3143e90024344161a6ff532aa5b891c87f70d6dd3dce24848b4a465fc
          • MD5 SHA1 SHA512

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 1KB
          • SHA256 cbafbcef08446541d49da9d11842ab860628a7d317db15f570b7b1e1048ade11
          • MD5 SHA1 SHA512

          __PSScriptPolicyTest_ndcmihpm.4af.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ndcmihpm.4af.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          7-zip.exe

          • Path C:\Users\Public\7-zip\7-zip.exe
          • Size 54KB
          • SHA256 ab91de964c96b6a6903fa52419fbb17a2c1fee6817f5704a07db4edc9855e72e
          • MD5 SHA1 SHA512 SSDEEP

          7-zip1.7z

          • Path C:\Users\Public\7-zip\7-zip1.7z
          • Size 3.0MB
          • SHA256 ee7f1c5e5d3f5256673676eda7fbd67d4453985a09454b6a25f1426265a4d239
          • MD5 SHA1 SHA512 SSDEEP

          7-zip2.7z

          • Path C:\Users\Public\7-zip\7-zip2.7z
          • Size 3.0MB
          • SHA256 a5f2d407d0e9835aaa8bab43aefa6065090079ca029596514e3e6c02e2f7a617
          • MD5 SHA1 SHA512 SSDEEP

          7z2408-x64.exe

          • Path C:\Users\Public\7-zip\7z2408-x64.exe
          • Size 1.5MB
          • SHA256 67cb9d3452c9dd974b04f4a5fd842dbcba8184f2344ff72e3662d7cdb68b099b
          • MD5 SHA1 SHA512 SSDEEP

          HTCTL32.DLL

          • Path C:\Users\Public\7-zip\HTCTL32.DLL
          • Size 320KB
          • SHA256 edfe2b923bfb5d1088de1611401f5c35ece91581e71503a5631647ac51f7d796
          • MD5 SHA1 SHA512 SSDEEP

          MSVCR100.dll

          • Path C:\Users\Public\7-zip\MSVCR100.dll
          • Size 755KB
          • SHA256 8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18
          • MD5 SHA1 SHA512 SSDEEP

          NSM.LIC

          • Path C:\Users\Public\7-zip\NSM.LIC
          • Size 2KB
          • SHA256 6f22d4f19fd1bd72005354747065f6be2282983481def538cdede31df6bebdea
          • MD5 SHA1 SHA512

          PCICHEK.DLL

          • Path C:\Users\Public\7-zip\PCICHEK.DLL
          • Size 18KB
          • SHA256 313117e723dda6ea3911faacd23f4405003fb651c73de8deff10b9eb5b4a058a
          • MD5 SHA1 SHA512 SSDEEP

          PCICL32.dll

          • Path C:\Users\Public\7-zip\PCICL32.dll
          • Size 3.5MB
          • SHA256 07a191254362664b3993479a277199f7ea5ee723b6c25803914eedb50250acf4
          • MD5 SHA1 SHA512 SSDEEP

          client32.ini

          • Path C:\Users\Public\7-zip\client32.ini
          • Size 644B
          • SHA256 2b8d5b9d5fa2e8f7733839bb592a1b1ebc2723a37c8be0410396beb33e2d4648
          • MD5 SHA1 SHA512

          pcicapi.dll

          • Path C:\Users\Public\7-zip\pcicapi.dll
          • Size 32KB
          • SHA256 9074fd40ea6a0caa892e6361a6a4e834c2e51e6e98d1ffcda7a9a537594a6917
          • MD5 SHA1 SHA512 SSDEEP

          memory/3784-17-0x00007FFBF7090000-0x00007FFBF70A0000-memory.dmp

          memory/3784-15-0x00007FFC370AC000-0x00007FFC370AD000-memory.dmp

          memory/3784-16-0x00007FF633B70000-0x00007FF633B80000-memory.dmp

          memory/3784-21-0x00007FF633B70000-0x00007FF633B80000-memory.dmp

          memory/4460-18-0x00007FF7B63C0000-0x00007FF7B63D0000-memory.dmp

          memory/4460-20-0x00007FF7B63C0000-0x00007FF7B63D0000-memory.dmp

          memory/5056-0-0x00007FFC19133000-0x00007FFC19135000-memory.dmp

          memory/5056-14-0x00007FFC19130000-0x00007FFC19BF1000-memory.dmp

          memory/5056-12-0x00007FFC19130000-0x00007FFC19BF1000-memory.dmp

          memory/5056-11-0x00007FFC19130000-0x00007FFC19BF1000-memory.dmp

          memory/5056-6-0x000001E96F1D0000-0x000001E96F1F2000-memory.dmp