Analysis

  • max time kernel
    1325s
  • max time network
    1139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/07/2024, 17:51

General

  • Target
    ZoomInstallerFull.exe
  • Size 47.1MB
  • Sample240716-wfktvstdlk
  • SHA256 ab8e39e178ce83b48ee9863cc2dc58bba5b45ed5d54431efb878221904e9a796
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

Botnet
  • doralands15

C2
  • http://194.116.214.213

Attributes
  • url_path

    /5b0beefd0d5da45a.php

Signatures

  • Detects HijackLoader (aka IDAT Loader) 2 IoCs
  • HijackLoader

    HijackLoader is a multistage loader first seen in 2023.

  • Rhadamanthys

    Rhadamanthys is an info stealer written in C++ first seen in August 2022.

  • Stealc

    Stealc is an infostealer written in C++.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • 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.

  • Downloads MZ/PE file
  • .NET Reactor proctector 1 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 58 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:2648
      • C:\Windows\SysWOW64\openwith.exe
        "C:\Windows\system32\openwith.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4136
    • C:\Users\Admin\AppData\Local\Temp\ZoomInstallerFull.exe
      "C:\Users\Admin\AppData\Local\Temp\ZoomInstallerFull.exe"
      1⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:5100
      • C:\Program Files (x86)\Zoom\Zoom.exe
        "C:\Program Files (x86)\Zoom\Zoom.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:3084
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4508
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2780
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1400
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4068
        • C:\Users\Admin\AppData\Local\Temp\428228c2-d07d-426b-baf7-ad2a3886105b\snss1.exe
          "C:\Users\Admin\AppData\Local\Temp\428228c2-d07d-426b-baf7-ad2a3886105b\snss1.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3476
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1352
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              5⤵
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:116
        • C:\Users\Admin\AppData\Local\Temp\428228c2-d07d-426b-baf7-ad2a3886105b\snss2.exe
          "C:\Users\Admin\AppData\Local\Temp\428228c2-d07d-426b-baf7-ad2a3886105b\snss2.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:4984
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1864
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              5⤵
              • Suspicious use of NtCreateUserProcessOtherParentProcess
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3644

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Accessibility.dll

          • Path C:\Program Files (x86)\Zoom\Accessibility.dll
          • Size 20KB
          • SHA256 929ea150ad45b7c7dd5427461fbec44d43b67c08081f59b42b6abf570feae271
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Win32.Primitives.dll

          • Path C:\Program Files (x86)\Zoom\Microsoft.Win32.Primitives.dll
          • Size 15KB
          • SHA256 f1b40565e5c4c41da810aee5b7d2272a0906e88f796812435aa5ed712bcac40c
          • MD5 SHA1 SHA512 SSDEEP

          System.Collections.Concurrent.dll

          • Path C:\Program Files (x86)\Zoom\System.Collections.Concurrent.dll
          • Size 270KB
          • SHA256 483130bfd1e57a0cbfd8a4f3c6e2353ac3f246276f9476c83cca1cadbc47ef47
          • MD5 SHA1 SHA512 SSDEEP

          System.Collections.Specialized.dll

          • Path C:\Program Files (x86)\Zoom\System.Collections.Specialized.dll
          • Size 102KB
          • SHA256 0cbabb81eae22f4c07c6c846054d207ae3f25da15649eb7fa29e4e2cecd24db4
          • MD5 SHA1 SHA512 SSDEEP

          System.Collections.dll

          • Path C:\Program Files (x86)\Zoom\System.Collections.dll
          • Size 254KB
          • SHA256 9193aaef3ea8f19408f88c25fcaf5880e7836d1c35028d7e4077f6090b083541
          • MD5 SHA1 SHA512 SSDEEP

          System.ComponentModel.EventBasedAsync.dll

          • Path C:\Program Files (x86)\Zoom\System.ComponentModel.EventBasedAsync.dll
          • Size 46KB
          • SHA256 4c97d7bc0742faaa52ba86018b040aac44ddfc88a5835f9e6a659e03b4558999
          • MD5 SHA1 SHA512 SSDEEP

          System.ComponentModel.Primitives.dll

          • Path C:\Program Files (x86)\Zoom\System.ComponentModel.Primitives.dll
          • Size 78KB
          • SHA256 133ec34432ab8fa4f63ade636193864b6a62a089a0c98d746f5532c8a52f437b
          • MD5 SHA1 SHA512 SSDEEP

          System.ComponentModel.TypeConverter.dll

          • Path C:\Program Files (x86)\Zoom\System.ComponentModel.TypeConverter.dll
          • Size 726KB
          • SHA256 88129c110d748f7c8ef8a923f68cd26d39e0505b49bf5cc10cbd23b92f1a00a3
          • MD5 SHA1 SHA512 SSDEEP

          System.Diagnostics.FileVersionInfo.dll

          • Path C:\Program Files (x86)\Zoom\System.Diagnostics.FileVersionInfo.dll
          • Size 46KB
          • SHA256 92ae8401342fd8484e749c65a7726a0f5bff69346ad4e96026bfa063ff567b8b
          • MD5 SHA1 SHA512 SSDEEP

          System.Diagnostics.TraceSource.dll

          • Path C:\Program Files (x86)\Zoom\System.Diagnostics.TraceSource.dll
          • Size 142KB
          • SHA256 22365ee4e3ba3c991d495e41f92e29bf6ddb38a48c44f55651271b80ee62b6d1
          • MD5 SHA1 SHA512 SSDEEP

          System.Drawing.Common.dll

          • Path C:\Program Files (x86)\Zoom\System.Drawing.Common.dll
          • Size 1.5MB
          • SHA256 75b1e772a4355145364121af00e5b5cf06c7212aa53d662fdc996bc11e8092a9
          • MD5 SHA1 SHA512 SSDEEP

          System.Drawing.Primitives.dll

          • Path C:\Program Files (x86)\Zoom\System.Drawing.Primitives.dll
          • Size 130KB
          • SHA256 cbe9fbb1d1e4850460854474ffd8c01ddcc756dcb33a86d1674c0cb2e2a0b026
          • MD5 SHA1 SHA512 SSDEEP

          System.IO.FileSystem.dll

          • Path C:\Program Files (x86)\Zoom\System.IO.FileSystem.dll
          • Size 15KB
          • SHA256 7bd41c6b12b73e6e90476f2d56db8581664abe07e7ab9bf2917bb254ed1d75ad
          • MD5 SHA1 SHA512 SSDEEP

          System.Memory.dll

          • Path C:\Program Files (x86)\Zoom\System.Memory.dll
          • Size 154KB
          • SHA256 3af25e0c81c1462d0db86f55c4e5fd8c048c70685f9a566d29d499bc46935fb4
          • MD5 SHA1 SHA512 SSDEEP

          System.Private.CoreLib.dll

          • Path C:\Program Files (x86)\Zoom\System.Private.CoreLib.dll
          • Size 12.6MB
          • SHA256 ba7e61a00e7a4634b5c5a79b83126f75580ceec235c613000c3efbc01826cad0
          • MD5 SHA1 SHA512 SSDEEP

          System.Private.Xml.Linq.dll

          • Path C:\Program Files (x86)\Zoom\System.Private.Xml.Linq.dll
          • Size 394KB
          • SHA256 0b63cebb991d1911a607993ea5b4639f34a2b0b381a73973542db2d3591e9f90
          • MD5 SHA1 SHA512 SSDEEP

          System.Private.Xml.dll

          • Path C:\Program Files (x86)\Zoom\System.Private.Xml.dll
          • Size 7.6MB
          • SHA256 834e304221e742a831be5c5178892258e689eae35b730172e74161af2785aab9
          • MD5 SHA1 SHA512 SSDEEP

          System.Runtime.InteropServices.dll

          • Path C:\Program Files (x86)\Zoom\System.Runtime.InteropServices.dll
          • Size 94KB
          • SHA256 756de3f5f2e07b478ac046a0ac976b992ef6bc653a1be2bb1e28524a4ff8d67d
          • MD5 SHA1 SHA512 SSDEEP

          System.Runtime.dll

          • Path C:\Program Files (x86)\Zoom\System.Runtime.dll
          • Size 42KB
          • SHA256 1fc86ada2ec543a85b8a06a9470a7b5aaa91eb03cfe497a32cd52a1e043ea100
          • MD5 SHA1 SHA512 SSDEEP

          System.Security.Cryptography.Algorithms.dll

          • Path C:\Program Files (x86)\Zoom\System.Security.Cryptography.Algorithms.dll
          • Size 17KB
          • SHA256 c99c6b384655e1af4ae5161fe9d54d95828ae17b18b884b0a99258f1c45aa388
          • MD5 SHA1 SHA512 SSDEEP

          System.Security.Cryptography.Csp.dll

          • Path C:\Program Files (x86)\Zoom\System.Security.Cryptography.Csp.dll
          • Size 15KB
          • SHA256 16bc1f72938d96deca5ce031a29a43552385674c83f07e4f91d387f5f01b8d0a
          • MD5 SHA1 SHA512 SSDEEP

          System.Security.Cryptography.Primitives.dll

          • Path C:\Program Files (x86)\Zoom\System.Security.Cryptography.Primitives.dll
          • Size 15KB
          • SHA256 6703e8d35df4b6389f43df88cc35fc3b3823fb3a7f04e5eb540b0af39f5fa622
          • MD5 SHA1 SHA512 SSDEEP

          System.Security.Cryptography.dll

          • Path C:\Program Files (x86)\Zoom\System.Security.Cryptography.dll
          • Size 2.0MB
          • SHA256 4582f67764410785714a30fa05ffaaad78fe1bc8d4689889a43c2af825b2002e
          • MD5 SHA1 SHA512 SSDEEP

          System.Threading.Thread.dll

          • Path C:\Program Files (x86)\Zoom\System.Threading.Thread.dll
          • Size 15KB
          • SHA256 84c9a95609878542f00fe7da658f62d1a6943a43e6346af80d26bcff069a4dbd
          • MD5 SHA1 SHA512 SSDEEP

          System.Threading.dll

          • Path C:\Program Files (x86)\Zoom\System.Threading.dll
          • Size 82KB
          • SHA256 e8d1f5c422ee0ba3b235b22028ab92dc77c1ff9774edc0b940cad7224a30ba7d
          • MD5 SHA1 SHA512 SSDEEP

          System.Windows.Forms.Primitives.dll

          • Path C:\Program Files (x86)\Zoom\System.Windows.Forms.Primitives.dll
          • Size 2.9MB
          • SHA256 5794a3996a0b4ab9cb13f3de0f87d50462615a7d0eb1d243d9324a682c1b58cb
          • MD5 SHA1 SHA512 SSDEEP

          System.Windows.Forms.dll

          • Path C:\Program Files (x86)\Zoom\System.Windows.Forms.dll
          • Size 12.9MB
          • SHA256 efc52dbbef5202d9ff424d7adc6e2249b66450a5fd5414891776fc617b00123e
          • MD5 SHA1 SHA512 SSDEEP

          Zoom.dll

          • Path C:\Program Files (x86)\Zoom\Zoom.dll
          • Size 180KB
          • SHA256 171dbf634e43510888848067266c4b6a54c60e56940fe28f1229ef0ce1aa7847
          • MD5 SHA1 SHA512 SSDEEP

          Zoom.exe

          • Path C:\Program Files (x86)\Zoom\Zoom.exe
          • Size 182KB
          • SHA256 719569fae056176d52dd35bc34e6f56bfdac7b9ed3a63c1129eee77b1510d7ef
          • MD5 SHA1 SHA512 SSDEEP

          clrjit.dll

          • Path C:\Program Files (x86)\Zoom\clrjit.dll
          • Size 1.7MB
          • SHA256 0759c8129bc761fe039e1cacb92c643606591cb8149a2ed33ee16babc9768dcb
          • MD5 SHA1 SHA512 SSDEEP

          coreclr.dll

          • Path C:\Program Files (x86)\Zoom\coreclr.dll
          • Size 4.8MB
          • SHA256 871949a2ec19c183ccdacdea54c7b3e43c590eaf445e1b58817ee1cb3ce366d5
          • MD5 SHA1 SHA512 SSDEEP

          hostfxr.dll

          • Path C:\Program Files (x86)\Zoom\hostfxr.dll
          • Size 342KB
          • SHA256 5aa15c6119b971742a7f824609739198a3c7c499370ed8b8df5a5942f69d9303
          • MD5 SHA1 SHA512 SSDEEP

          hostpolicy.dll

          • Path C:\Program Files (x86)\Zoom\hostpolicy.dll
          • Size 388KB
          • SHA256 02c8dbe7bf1999352fc561cb35b51c6a88c881a4223c478c91768fdaf8e47b62
          • MD5 SHA1 SHA512 SSDEEP

          mscorrc.dll

          • Path C:\Program Files (x86)\Zoom\mscorrc.dll
          • Size 133KB
          • SHA256 23a433398be5135222ee14bb1de6334e7b22bad1a38664a83f1cf19dfbddd960
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_thvxjimb.n34.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_thvxjimb.n34.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          InstallOptions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nshB18F.tmp\InstallOptions.dll
          • Size 15KB
          • SHA256 b2091205e225fc07daf1101218c64ce62a4690cacac9c3d0644d12e93e4c213c
          • MD5 SHA1 SHA512 SSDEEP

          LangDLL.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nshB18F.tmp\LangDLL.dll
          • Size 5KB
          • SHA256 32230128c18574c1e860dfe4b17fe0334f685740e27bc182e0d525a8948c9c2e
          • MD5 SHA1 SHA512 SSDEEP

          System.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nshB18F.tmp\System.dll
          • Size 12KB
          • SHA256 9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706
          • MD5 SHA1 SHA512 SSDEEP

          ioSpecial.ini

          • Path C:\Users\Admin\AppData\Local\Temp\nshB18F.tmp\ioSpecial.ini
          • Size 1KB
          • SHA256 0d0e699e4403c311ef7ad739a7b2b68c8408d4e296da83da0eb8ce7e04328566
          • MD5 SHA1 SHA512

          ioSpecial.ini

          • Path C:\Users\Admin\AppData\Local\Temp\nshB18F.tmp\ioSpecial.ini
          • Size 1KB
          • SHA256 02209f6aaa6aacc676e660c9a0c538f6f8ba73b96398207977587e77c46a0a90
          • MD5 SHA1 SHA512

          ioSpecial.ini

          • Path C:\Users\Admin\AppData\Local\Temp\nshB18F.tmp\ioSpecial.ini
          • Size 1KB
          • SHA256 3a32c24b82c67d042ae868956884aff99721028bb5cc8aaefad587f989566c65
          • MD5 SHA1 SHA512

          memory/116-847-0x0000000000630000-0x000000000086E000-memory.dmp

          memory/116-817-0x0000000000630000-0x000000000086E000-memory.dmp

          memory/116-784-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          memory/116-781-0x0000000000630000-0x000000000086E000-memory.dmp

          memory/116-780-0x00007FFC15150000-0x00007FFC15345000-memory.dmp

          memory/116-779-0x0000000000630000-0x000000000086E000-memory.dmp

          memory/1352-777-0x0000000073EE0000-0x000000007405B000-memory.dmp

          memory/1352-776-0x00007FFC15150000-0x00007FFC15345000-memory.dmp

          memory/1864-854-0x00007FFC15150000-0x00007FFC15345000-memory.dmp

          memory/1864-855-0x0000000074B30000-0x0000000074CAB000-memory.dmp

          memory/3476-774-0x0000000073EE0000-0x000000007405B000-memory.dmp

          memory/3476-773-0x00007FFC15150000-0x00007FFC15345000-memory.dmp

          memory/3476-772-0x0000000073EE0000-0x000000007405B000-memory.dmp

          memory/3476-771-0x0000000000220000-0x00000000009DB000-memory.dmp

          memory/3644-866-0x0000000076670000-0x0000000076885000-memory.dmp

          memory/3644-862-0x0000000004870000-0x0000000004C70000-memory.dmp

          memory/3644-869-0x00000000006A0000-0x0000000000720000-memory.dmp

          memory/3644-863-0x0000000004870000-0x0000000004C70000-memory.dmp

          memory/3644-861-0x00000000006A0000-0x0000000000720000-memory.dmp

          memory/3644-857-0x00000000006A0000-0x0000000000720000-memory.dmp

          memory/3644-858-0x00007FFC15150000-0x00007FFC15345000-memory.dmp

          memory/3644-859-0x00000000006A0000-0x0000000000720000-memory.dmp

          memory/4136-867-0x0000000000730000-0x0000000000739000-memory.dmp

          memory/4136-871-0x0000000002440000-0x0000000002840000-memory.dmp

          memory/4136-872-0x00007FFC15150000-0x00007FFC15345000-memory.dmp

          memory/4136-874-0x0000000076670000-0x0000000076885000-memory.dmp

          memory/4508-726-0x00000227E8B10000-0x00000227E8B32000-memory.dmp

          memory/4984-849-0x00000000006D0000-0x0000000000876000-memory.dmp

          memory/4984-851-0x00007FFC15150000-0x00007FFC15345000-memory.dmp

          memory/4984-850-0x0000000074B30000-0x0000000074CAB000-memory.dmp

          memory/4984-852-0x0000000074B30000-0x0000000074CAB000-memory.dmp