Analysis

  • max time kernel
    150s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20251223-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20251223-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2025, 11:48

General

  • Target
    GIYACTWB.msi
  • Size 36.0MB
  • Sample251225-nyj2aawkcy
  • SHA256 bfe06b2f18cdbc4d74b731a2fe52f66d3e4da9f9f0bbf9730b816b5418e5f12b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • hijackloader

Attributes
  • directory

    %APPDATA%\nano_wizard

  • inject_dll

    %windir%\SysWOW64\rasapi32.dll

xor.hex

Signatures

  • DeerStealer

    DeerStealer is a sophisticated information stealer written in C++.

  • Deerstealer family
  • Detects DeerStealer 6 IoCs
  • Detects HijackLoader (aka IDAT Loader) 1 IoCs
  • HijackLoader, IDAT loader, Ghostulse,

    HijackLoader is a multi-stage loader, first seen in 2023.

  • Hijackloader family
  • Executes dropped EXE 12 IoCs
  • Loads dropped DLL 30 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\GIYACTWB.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4220
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4268
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 5DEAB8FA506C82392E9E7818C147AE4D C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5436
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{56D25A4E-FF0B-4B9E-88A9-BA0C1984D4E5}
        3⤵
        • Executes dropped EXE
        PID:5476
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{D2A4A81D-45D5-4C3A-937D-E214B42EA9D3}
        3⤵
        • Executes dropped EXE
        PID:4452
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{B5898859-97DF-478E-A7D9-6E7E5BB58775}
        3⤵
        • Executes dropped EXE
        PID:4032
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{36721A8B-64CB-4F8B-A2F0-C73A9E54FF2C}
        3⤵
        • Executes dropped EXE
        PID:4844
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{7BF116FA-8C8A-4785-85B9-A4DC039F63FA}
        3⤵
        • Executes dropped EXE
        PID:3588
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{9C93DCE1-758D-46AE-A76C-B3B2C83E3CD2}
        3⤵
        • Executes dropped EXE
        PID:2004
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{0BEA4E5F-2BCA-49EC-8746-1965FB88678B}
        3⤵
        • Executes dropped EXE
        PID:1348
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{B6A37603-22DB-4B5B-A08C-FF7F90D450B4}
        3⤵
        • Executes dropped EXE
        PID:3276
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{4823DE7B-B4D3-4FC8-9BCB-765DF36008AD}
        3⤵
        • Executes dropped EXE
        PID:2768
      • C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
        C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{A2B58C8C-C6DE-4060-A649-F6D096650BA0}
        3⤵
        • Executes dropped EXE
        PID:5404
      • C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\DrivC97.exe
        C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\DrivC97.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1924
        • C:\ProgramData\nano_wizard\DrivC97.exe
          C:\ProgramData\nano_wizard\DrivC97.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:4680
          • C:\Users\Admin\ByGateway.exe
            C:\Users\Admin\ByGateway.exe
            5⤵
            • Loads dropped DLL
            PID:3476
          • C:\Users\Admin\AppData\Roaming\nano_wizard\XPFix.exe
            "C:\Users\Admin\AppData\Roaming\nano_wizard\XPFix.exe" "C:\Users\Admin\AppData\Roaming\nano_wizard\XPFix.exe" /u
            5⤵
              PID:2984

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          MSVCP110.dll

          • Path C:\ProgramData\nano_wizard\MSVCP110.dll
          • Size 522KB
          • SHA256 c8d5572ca8d7624871188f0acabc3ae60d4c5a4f6782d952b9038de3bc28b39a
          • MD5 SHA1 SHA512 SSDEEP

          MSVCR110.dll

          • Path C:\ProgramData\nano_wizard\MSVCR110.dll
          • Size 854KB
          • SHA256 b30160e759115e24425b9bcdf606ef6ebce4657487525ede7f1ac40b90ff7e49
          • MD5 SHA1 SHA512 SSDEEP

          VCOMP110.DLL

          • Path C:\ProgramData\nano_wizard\VCOMP110.DLL
          • Size 122KB
          • SHA256 225a40104f94dc247ea62de47f600eac74c7c6b1f5964aeebeac2670e2eea878
          • MD5 SHA1 SHA512 SSDEEP

          ippcc-7.0.dll

          • Path C:\ProgramData\nano_wizard\ippcc-7.0.dll
          • Size 126KB
          • SHA256 922d35e1a9d8893eaa6d22180fcc4cd898f8fe28d2871321215b6a239962f5bd
          • MD5 SHA1 SHA512 SSDEEP

          ippcore-7.0.dll

          • Path C:\ProgramData\nano_wizard\ippcore-7.0.dll
          • Size 134KB
          • SHA256 511bb467991f5f24578beae81d945b2ae26d0aa25e8acbf4cf69a630be1904b1
          • MD5 SHA1 SHA512 SSDEEP

          ippi-7.0.dll

          • Path C:\ProgramData\nano_wizard\ippi-7.0.dll
          • Size 386KB
          • SHA256 70cb4ff5f30014ed63c21c94c0daaf2d9f23d1895b654d60c2daa91ab54f841b
          • MD5 SHA1 SHA512 SSDEEP

          libiomp5md.dll

          • Path C:\ProgramData\nano_wizard\libiomp5md.dll
          • Size 738KB
          • SHA256 1d6893815a56cda10f187c0d379b1166f2da908110624af516093e371bf86380
          • MD5 SHA1 SHA512 SSDEEP

          zcl.dll

          • Path C:\ProgramData\nano_wizard\zcl.dll
          • Size 542KB
          • SHA256 621cf7b94118cbc9fda627a037b4eedac558987050669c128065579ea18cbeed
          • MD5 SHA1 SHA512 SSDEEP

          MSI79C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI79C.tmp
          • Size 172KB
          • SHA256 2dc5a31f67fe877ca0eb95113873749def2beb0a205c62de206ccd7a668fce14
          • MD5 SHA1 SHA512 SSDEEP

          MSIBC4.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIBC4.tmp
          • Size 2.5MB
          • SHA256 aa7e3dcba588960f7d99a65bab602d9ff7000da6023b81c97d4ef5b71362a010
          • MD5 SHA1 SHA512 SSDEEP

          ISBEW64.exe

          • Path C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISBEW64.exe
          • Size 178KB
          • SHA256 8023e720f5a4b859e7ba5390037d4a08d7962d0a5af41c182806d403ea80fda9
          • MD5 SHA1 SHA512 SSDEEP

          ISRT.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\ISRT.dll
          • Size 426KB
          • SHA256 fb4f99cd0da2a02975e84206a39202eee74f0384846f2caf4417704f44e254e9
          • MD5 SHA1 SHA512 SSDEEP

          _isres_0x0409.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{B17A5A10-1139-4E6C-BDF5-4EAC192A0816}\_isres_0x0409.dll
          • Size 1.8MB
          • SHA256 505916e8b40fdd031ee21eea40a8bee0adeac0d04e23c3a6b10ecee0217d2416
          • MD5 SHA1 SHA512 SSDEEP

          DrivC97.exe

          • Path C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\DrivC97.exe
          • Size 32KB
          • SHA256 2d8f9e8814e40c817ac9125cf8a7ef419147b95155f345a6227a08e785805442
          • MD5 SHA1 SHA512 SSDEEP

          Droudfrearjoob.tt

          • Path C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\Droudfrearjoob.tt
          • Size 7KB
          • SHA256 1847a32b331e6a3510c90c11618b0d5361d2ecd5d086cc28e530a8869af7bd39
          • MD5 SHA1 SHA512 SSDEEP

          Hargrait.eum

          • Path C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\Hargrait.eum
          • Size 3.1MB
          • SHA256 1026204ac96ccea57dbadb9338c4757f97462c6b16073f53d1ac526ec9c97c60
          • MD5 SHA1 SHA512 SSDEEP

          Zxl.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\Zxl.dll
          • Size 9.1MB
          • SHA256 628b3d1725dd4d33e8e2a4052a3f91603088198c8629d6aa386a868977c49879
          • MD5 SHA1 SHA512 SSDEEP

          ippccg9-7.0.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\ippccg9-7.0.dll
          • Size 2.1MB
          • SHA256 16fbf64dd808678661774fdf88a95366898ae36a3bff70117f57a9f1745738eb
          • MD5 SHA1 SHA512 SSDEEP

          ippig9-7.0.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\ippig9-7.0.dll
          • Size 14.4MB
          • SHA256 796f06c18310d4a37ea1d6c1917e7fdc6b2e739978b75aecd441ab23d4573bfe
          • MD5 SHA1 SHA512 SSDEEP

          zpsres.US.dll

          • Path C:\Users\Admin\AppData\Local\Temp\{D2D6D997-DDE0-4F43-BBF8-7772DDE358AA}\zpsres.US.dll
          • Size 618KB
          • SHA256 84931e32aa3a27bfd4bfde88412a23bffdd6cd94eeeafdf91fbc49229da48f67
          • MD5 SHA1 SHA512 SSDEEP

          memory/1924-85-0x0000000000E00000-0x0000000000EBE000-memory.dmp

          memory/1924-82-0x0000000000940000-0x0000000000960000-memory.dmp

          memory/1924-90-0x00007FFE7A6D0000-0x00007FFE7A8C5000-memory.dmp

          memory/1924-89-0x0000000071EA0000-0x0000000071F83000-memory.dmp

          memory/1924-79-0x0000000000D90000-0x0000000000DF4000-memory.dmp

          memory/3476-163-0x00007FF63D2F0000-0x00007FF63D5DC000-memory.dmp

          memory/3476-158-0x00007FF63D2F0000-0x00007FF63D5DC000-memory.dmp

          memory/3476-154-0x00007FF63D2F0000-0x00007FF63D5DC000-memory.dmp

          memory/3476-152-0x00007FF63D2F0000-0x00007FF63D5DC000-memory.dmp

          memory/3476-150-0x00007FF63D2F0000-0x00007FF63D5DC000-memory.dmp

          memory/3476-149-0x00007FF63D2F0000-0x00007FF63D5DC000-memory.dmp

          memory/4680-147-0x0000000071EA0000-0x0000000071F83000-memory.dmp

          memory/4680-129-0x0000000000FC0000-0x0000000001024000-memory.dmp

          memory/4680-138-0x0000000071EA0000-0x0000000071F83000-memory.dmp

          memory/4680-136-0x00007FFE7A6D0000-0x00007FFE7A8C5000-memory.dmp

          memory/4680-135-0x0000000071EA0000-0x0000000071F83000-memory.dmp

          memory/4680-133-0x00000000012F0000-0x0000000001310000-memory.dmp

          memory/4680-131-0x0000000001230000-0x00000000012EE000-memory.dmp

          memory/5436-41-0x0000000010000000-0x0000000010114000-memory.dmp

          memory/5436-48-0x00000000038D0000-0x0000000003A97000-memory.dmp