Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24/10/2025, 01:46

General

  • Target
    HYDRA.exe
  • Size 2.6MB
  • Sample251024-b66tsswncs
  • SHA256 f8c17cb375e8ccad5b0e33dae65694a1bd628f91cac6cf65dd11f50e91130c2d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2017

C2
  • http://92.53.105.14/

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Smokeloader family
  • Drops startup file 1 IoCs
  • Executes dropped EXE 8 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HYDRA.exe
    "C:\Users\Admin\AppData\Local\Temp\HYDRA.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2060
    • C:\Users\Admin\AppData\Roaming\yaya.exe
      C:\Users\Admin\AppData\Roaming\yaya.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1868
      • C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe
        "C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2912
        • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\vg_mepde.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:5148
          • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8936.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC8935.tmp"
            5⤵
              PID:2920
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe"
            4⤵
              PID:2080
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe"
              4⤵
                PID:2104
          • C:\Users\Admin\AppData\Roaming\va.exe
            C:\Users\Admin\AppData\Roaming\va.exe
            2⤵
            • Drops startup file
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:5816
          • C:\Users\Admin\AppData\Roaming\ufx.exe
            C:\Users\Admin\AppData\Roaming\ufx.exe
            2⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3256
            • C:\ProgramData\ucp\usc.exe
              "C:\ProgramData\ucp\usc.exe" /ucp/usc.exe
              3⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:752
              • C:\Windows\SysWOW64\SCHTASKS.exe
                SCHTASKS /Create /SC MINUTE /MO 10 /F /TN SystemOptimize /TR C:\ProgramData\ucp\usc.exe
                4⤵
                • System Location Discovery: System Language Discovery
                • Scheduled Task/Job: Scheduled Task
                PID:2388
          • C:\Users\Admin\AppData\Roaming\sant.exe
            C:\Users\Admin\AppData\Roaming\sant.exe
            2⤵
            • Executes dropped EXE
            • Maps connected drives based on registry
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:408
            • C:\Windows\SysWOW64\explorer.exe
              explorer.exe
              3⤵
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              PID:2076
          • C:\Users\Admin\AppData\Roaming\power.exe
            C:\Users\Admin\AppData\Roaming\power.exe
            2⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1820
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              PID:2416
        • C:\ProgramData\ucp\usc.exe
          C:\ProgramData\ucp\usc.exe
          1⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2932
          • C:\Windows\SysWOW64\SCHTASKS.exe
            SCHTASKS /Create /SC MINUTE /MO 10 /F /TN SystemOptimize /TR C:\ProgramData\ucp\usc.exe
            2⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4332

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              usc.exe

              • Path C:\ProgramData\ucp\usc.exe
              • Size 4.0MB
              • SHA256 84d7fd0a93d963e9808212917f79fe2d485bb7fbc94ee374a141bbd15da725b7
              • MD5 SHA1 SHA512 SSDEEP

              RES8936.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\RES8936.tmp
              • Size 1KB
              • SHA256 7ec0c069f4baf00645a5367a4c711475019bd2657223313fc98e908beea3cd3f
              • MD5 SHA1 SHA512

              __PSScriptPolicyTest_1hbcbnvs.2ss.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1hbcbnvs.2ss.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512

              vg_mepde.dll

              • Path C:\Users\Admin\AppData\Local\Temp\vg_mepde.dll
              • Size 5KB
              • SHA256 638874eea57e6eee3ffc954a1821a0c5a5e93ce4d953f0d9da24ed88042e980d
              • MD5 SHA1 SHA512 SSDEEP

              vg_mepde.pdb

              • Path C:\Users\Admin\AppData\Local\Temp\vg_mepde.pdb
              • Size 7KB
              • SHA256 fbf356ed3c8207a8c564d8093f9039e799d6deac5c751d2c33c77609be6c56c7
              • MD5 SHA1 SHA512 SSDEEP

              power.exe

              • Path C:\Users\Admin\AppData\Roaming\power.exe
              • Size 507KB
              • SHA256 1bee45423044b5a6bf0ad0dd2870117824b000784ce81c5f8a1b930bb8bc0465
              • MD5 SHA1 SHA512 SSDEEP

              sant.exe

              • Path C:\Users\Admin\AppData\Roaming\sant.exe
              • Size 12KB
              • SHA256 3fd826fc0c032721466b94ab3ec7dcfe006cc284e16132af6b91dfbc064b0907
              • MD5 SHA1 SHA512 SSDEEP

              ufx.exe

              • Path C:\Users\Admin\AppData\Roaming\ufx.exe
              • Size 960KB
              • SHA256 9e3826138bacac89845c26278f52854117db1652174c1c76dbb2bd24f00f4973
              • MD5 SHA1 SHA512 SSDEEP

              va.exe

              • Path C:\Users\Admin\AppData\Roaming\va.exe
              • Size 88KB
              • SHA256 3139bf3c4b958c3a019af512aecdb8161b9d6d7432d2c404abda3f42b63f34f1
              • MD5 SHA1 SHA512 SSDEEP

              yaya.exe

              • Path C:\Users\Admin\AppData\Roaming\yaya.exe
              • Size 1.7MB
              • SHA256 5c32e0d2a69fd77e85f2eecaabeb677b6f816de0d82bf7c29c9d124a818f424f
              • MD5 SHA1 SHA512 SSDEEP

              starter.exe

              • Path C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe
              • Size 80KB
              • SHA256 990dffdc0694858514d6d7ff7fff5dc9f48fab3aa35a4d9301d94fc57e346446
              • MD5 SHA1 SHA512 SSDEEP

              CSC8935.tmp

              • Path \??\c:\Users\Admin\AppData\Local\Temp\CSC8935.tmp
              • Size 652B
              • SHA256 cd915064dfe3030f8a3ac35d69fbdd744b272f3341a0fe6fe8ed9beae8a6779e
              • MD5 SHA1 SHA512

              vg_mepde.0.cs

              • Path \??\c:\Users\Admin\AppData\Local\Temp\vg_mepde.0.cs
              • Size 4KB
              • SHA256 0b3a3f8f11eb6f50fe67943f2b73c5824614f31c2e0352cc234927d7cb1a52e0
              • MD5 SHA1 SHA512 SSDEEP

              vg_mepde.cmdline

              • Path \??\c:\Users\Admin\AppData\Local\Temp\vg_mepde.cmdline
              • Size 309B
              • SHA256 5e9660d44200786f4b6c47ce55980f33ed2b923b36c91f53c4274b57ecfc2c65
              • MD5 SHA1 SHA512

              memory/408-78-0x0000000000520000-0x000000000052A000-memory.dmp

              memory/408-86-0x0000000000520000-0x000000000052A000-memory.dmp

              memory/408-24-0x0000000000520000-0x000000000052A000-memory.dmp

              memory/408-17-0x0000000000520000-0x000000000052A000-memory.dmp

              memory/408-16-0x0000000000400000-0x0000000000404000-memory.dmp

              memory/1820-98-0x0000000000400000-0x0000000000485000-memory.dmp

              memory/1820-79-0x0000000000400000-0x0000000000485000-memory.dmp

              memory/1868-55-0x0000000000400000-0x000000000047B000-memory.dmp

              memory/2076-93-0x0000000000D80000-0x0000000000D8A000-memory.dmp

              memory/2076-91-0x0000000000D80000-0x0000000000D8A000-memory.dmp

              memory/2076-80-0x0000000000E00000-0x000000000122C000-memory.dmp

              memory/2076-81-0x0000000000E00000-0x000000000122C000-memory.dmp

              memory/2076-82-0x0000000000D80000-0x0000000000D8A000-memory.dmp

              memory/2416-103-0x0000000006360000-0x00000000063C6000-memory.dmp

              memory/2416-111-0x00000000068B0000-0x00000000068CE000-memory.dmp

              memory/2416-110-0x00000000063D0000-0x0000000006727000-memory.dmp

              memory/2416-113-0x0000000006E20000-0x0000000006E66000-memory.dmp

              memory/2416-99-0x0000000005420000-0x0000000005456000-memory.dmp

              memory/2416-100-0x0000000005A90000-0x00000000060BA000-memory.dmp

              memory/2416-101-0x0000000005A10000-0x0000000005A32000-memory.dmp

              memory/2416-112-0x0000000006900000-0x000000000694C000-memory.dmp

              memory/2416-102-0x00000000062F0000-0x0000000006356000-memory.dmp

              memory/2912-59-0x000000001CE30000-0x000000001CECC000-memory.dmp

              memory/2912-75-0x0000000000EB0000-0x0000000000EB8000-memory.dmp

              memory/2912-58-0x000000001C960000-0x000000001CE2E000-memory.dmp

              memory/2912-60-0x0000000000E80000-0x0000000000E88000-memory.dmp

              memory/5816-19-0x0000000000400000-0x000000000041C000-memory.dmp