Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/05/2025, 06:35

General

  • Target

    HYDRA.exe

  • Size

    2.6MB

  • MD5

    c52bc39684c52886712971a92f339b23

  • SHA1

    c5cb39850affb7ed322bfb0a4900e17c54f95a11

  • SHA256

    f8c17cb375e8ccad5b0e33dae65694a1bd628f91cac6cf65dd11f50e91130c2d

  • SHA512

    2d50c1aa6ca237b9dbe97f000a082a223618f2164c8ab42ace9f4e142c318b2fc53e91a476dbe9c2dd459942b61507df5c551bd5c692a2b2a2037e4f6bd2a12b

  • SSDEEP

    49152:HnUXzRe4cjAx+L/G/3JHQZutOnmSzZniyui0EJHezdcc/DK9kTO1S:HUD8djA0LOvJdtOmSlniyuiPFePmS61S

Malware Config

Extracted

Family

smokeloader

Version

2017

C2

http://92.53.105.14/

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Smokeloader family
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 7 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 10 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 1 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 3 IoCs
  • Suspicious use of WriteProcessMemory 33 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:208
    • C:\Users\Admin\AppData\Roaming\yaya.exe
      C:\Users\Admin\AppData\Roaming\yaya.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3676
      • 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:1568
        • 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\aa0xvnsk.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:5424
          • 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\RES85BB.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC85BA.tmp"
            5⤵
              PID:2216
      • 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:5640
      • C:\Users\Admin\AppData\Roaming\ufx.exe
        C:\Users\Admin\AppData\Roaming\ufx.exe
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2528
        • 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:1392
          • 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:4632
      • 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:696
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:5292
      • C:\Users\Admin\AppData\Roaming\power.exe
        C:\Users\Admin\AppData\Roaming\power.exe
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:448
        • 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:3740
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Microsoft\gcbdfdsr\vatasfcu.exe
      1⤵
        PID:3704

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            • C:\ProgramData\ucp\usc.exe

              Filesize

              4.0MB

              MD5

              b100b373d645bf59b0487dbbda6c426d

              SHA1

              44a4ad2913f5f35408b8c16459dcce3f101bdcc7

              SHA256

              84d7fd0a93d963e9808212917f79fe2d485bb7fbc94ee374a141bbd15da725b7

              SHA512

              69483fed79f33da065b1cc65a2576ba268c78990545070f6f76fca8f48aaec8274faecdc9bcf92bf84a87809a318b159d1a3c835f848a6eea6c163f41612bf9b

            • C:\Users\Admin\AppData\Local\Temp\RES85BB.tmp

              Filesize

              1KB

              MD5

              e9e06e044b5abb041a2a5423643d8f93

              SHA1

              2d0667fa7cc999cec3fbe76a5b8283cfcdf811dc

              SHA256

              36075fe098c710db8bcccb53abcb9dac7cadc3dcf5c565234c3f5729b53fd654

              SHA512

              927f74329a1848f61599b4b4daf18a8c7136352f8a983b5fcaf4d7fa2cd1cea4e1b235457e02063f96eab09e5658d69db917c803cbb3b15be09b5b00ce457a6b

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1dmdqj1g.rv0.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

            • C:\Users\Admin\AppData\Local\Temp\aa0xvnsk.dll

              Filesize

              5KB

              MD5

              bc20aa0f7c52f3906a9e484dd40d9ed6

              SHA1

              023aec05185ecdff0542e798aca455184e9e6158

              SHA256

              5f569c48d82c5b7c385858c35d9ee53cad38a05a3038a3a13573ab59902546fb

              SHA512

              8494d16ee52dc771348bca65279ac54b67aba737261960af44d59115baa92b7630f3f8549e5df3b21e6e3e8abaa645fb1dc16901b36fee9af70b4b4df0647d67

            • C:\Users\Admin\AppData\Local\Temp\aa0xvnsk.pdb

              Filesize

              7KB

              MD5

              4473102b42121a186912e304d4c9f7f7

              SHA1

              4e9d0b5a7c8dff41fc2f3e55ea8f818f4f9ace95

              SHA256

              e0c91c6a6a514f0f1d1def28e2503ac3184c82695213b8a8500920131725a686

              SHA512

              fda4d173baa4175010c262cd6709746b7be8d637ca239ec75b37eac891c4e7b602b74dcb523ac440ef2ce0af78d5e3c27b147bc18b1685908ed4ec53b2297cec

            • C:\Users\Admin\AppData\Roaming\power.exe

              Filesize

              507KB

              MD5

              743f47ae7d09fce22d0a7c724461f7e3

              SHA1

              8e98dd1efb70749af72c57344aab409fb927394e

              SHA256

              1bee45423044b5a6bf0ad0dd2870117824b000784ce81c5f8a1b930bb8bc0465

              SHA512

              567993c3b798365efa07b7a46fda98494bfe540647f27654764e78b7f60f093d403b77b9abb889cfb09b44f13515ce3c041fc5db05882418313c3b3409dd77bf

            • C:\Users\Admin\AppData\Roaming\sant.exe

              Filesize

              12KB

              MD5

              5effca91c3f1e9c87d364460097f8048

              SHA1

              28387c043ab6857aaa51865346046cf5dc4c7b49

              SHA256

              3fd826fc0c032721466b94ab3ec7dcfe006cc284e16132af6b91dfbc064b0907

              SHA512

              b0dba30fde295d3f7858db9d1463239b30cd84921971032b2afb96f811a53ac12c1e6f72013d2eff397b0b89c371e7c023c951cd2102f94157cba9918cd2c3e0

            • C:\Users\Admin\AppData\Roaming\ufx.exe

              Filesize

              960KB

              MD5

              22e088012519e1013c39a3828bda7498

              SHA1

              3a8a87cce3f6aff415ee39cf21738663c0610016

              SHA256

              9e3826138bacac89845c26278f52854117db1652174c1c76dbb2bd24f00f4973

              SHA512

              5559e279dd3d72b2c9062d88e99212bbc67639fe5a42076efd24ae890cfce72cfe2235adb20bf5ed1f547b6da9e69effa4ccb80c0407b7524f134a24603ea5a8

            • C:\Users\Admin\AppData\Roaming\va.exe

              Filesize

              88KB

              MD5

              c084e736931c9e6656362b0ba971a628

              SHA1

              ef83b95fc645ad3a161a19ccef3224c72e5472bd

              SHA256

              3139bf3c4b958c3a019af512aecdb8161b9d6d7432d2c404abda3f42b63f34f1

              SHA512

              cbd6485840a117b52e24586da536cefa94ca087b41eb460d27bc2bd320217957c9e0e96b0daf74343efde2e23a5242e7a99075aabf5f9e18e03b52eb7151ae1f

            • C:\Users\Admin\AppData\Roaming\yaya.exe

              Filesize

              1.7MB

              MD5

              7d05ab95cfe93d84bc5db006c789a47f

              SHA1

              aa4aa0189140670c618348f1baad877b8eca04a4

              SHA256

              5c32e0d2a69fd77e85f2eecaabeb677b6f816de0d82bf7c29c9d124a818f424f

              SHA512

              40d1461e68994df56f19d9f7b2d96ffdc5300ca933e10dc53f7953471df8dea3aabeb178c3432c6819175475cadcbdb698384e3df57b3606c6fce3173a31fe84

            • C:\Windows\Temp\{1945BBS40-8571-3DA1-BB29-HYDRA7A13A1E}\starter.exe

              Filesize

              80KB

              MD5

              51bf85f3bf56e628b52d61614192359d

              SHA1

              c1bc90be6a4beb67fb7b195707798106114ec332

              SHA256

              990dffdc0694858514d6d7ff7fff5dc9f48fab3aa35a4d9301d94fc57e346446

              SHA512

              131173f3aabcfba484e972424c54201ec4b1facfb2df1efe08df0d43a816d4df03908b006884564c56a6245badd4f9ed442a295f1db2c0c970a8f80985d35474

            • \??\c:\Users\Admin\AppData\Local\Temp\CSC85BA.tmp

              Filesize

              652B

              MD5

              7fc715c1c9a3881c9895322ad2d7a841

              SHA1

              3d7030d3410635a105f0c8e31bf0e41c3efd64df

              SHA256

              5a944b5dbf9b5cf60ea4bf96294353badfe2584b33e899c2c73ad5e78dbf310e

              SHA512

              ae31a6fd28148d0ad4235a566a95baacd930067036f502176df059014e0966ab5b28744bbed9d07dd0e4b3e3c0c848ca7c65377439a755cf0ab95db2da0d3ed8

            • \??\c:\Users\Admin\AppData\Local\Temp\aa0xvnsk.0.cs

              Filesize

              4KB

              MD5

              a0d1b6f34f315b4d81d384b8ebcdeaa5

              SHA1

              794c1ff4f2a28e0c631a783846ecfffdd4c7ae09

              SHA256

              0b3a3f8f11eb6f50fe67943f2b73c5824614f31c2e0352cc234927d7cb1a52e0

              SHA512

              0a89293d731c5bca05e73148f85a740b324fc877f2fb05cde1f68e2098329fbca552d78249a46f4a1da15a450c8e754c73be20c652f7089d5cfec445ce950a0e

            • \??\c:\Users\Admin\AppData\Local\Temp\aa0xvnsk.cmdline

              Filesize

              309B

              MD5

              580e9a2f816b03a7a6af98a86c0de6f6

              SHA1

              ba9dfabb77731ea4bdf5dbb5d351ee012756dda4

              SHA256

              4fdac23bffd3500272ad662541c04aca430daa7651cee0e2869359960456b09f

              SHA512

              72239f2bd5be86bbafada075fd3104c215a9bb888a16147fa96292206f80a0c25bf2631639d166e9fd9185823eaa252b8ea3da157f8a737f7fef77b66519308a

            • memory/448-79-0x0000000000400000-0x0000000000485000-memory.dmp

              Filesize

              532KB

            • memory/448-96-0x0000000000400000-0x0000000000485000-memory.dmp

              Filesize

              532KB

            • memory/696-18-0x0000000000400000-0x0000000000404000-memory.dmp

              Filesize

              16KB

            • memory/696-92-0x00000000001E0000-0x00000000001EA000-memory.dmp

              Filesize

              40KB

            • memory/696-78-0x00000000001E0000-0x00000000001EA000-memory.dmp

              Filesize

              40KB

            • memory/696-24-0x00000000001E0000-0x00000000001EA000-memory.dmp

              Filesize

              40KB

            • memory/696-19-0x00000000001E0000-0x00000000001EA000-memory.dmp

              Filesize

              40KB

            • memory/1568-60-0x0000000001650000-0x0000000001658000-memory.dmp

              Filesize

              32KB

            • memory/1568-59-0x000000001C430000-0x000000001C4CC000-memory.dmp

              Filesize

              624KB

            • memory/1568-58-0x000000001BEC0000-0x000000001C38E000-memory.dmp

              Filesize

              4.8MB

            • memory/1568-74-0x0000000001670000-0x0000000001678000-memory.dmp

              Filesize

              32KB

            • memory/3676-55-0x0000000000400000-0x000000000047B000-memory.dmp

              Filesize

              492KB

            • memory/3740-112-0x00000000063F0000-0x000000000640E000-memory.dmp

              Filesize

              120KB

            • memory/3740-113-0x0000000006430000-0x000000000647C000-memory.dmp

              Filesize

              304KB

            • memory/3740-117-0x0000000007780000-0x000000000779A000-memory.dmp

              Filesize

              104KB

            • memory/3740-116-0x0000000007DE0000-0x000000000845A000-memory.dmp

              Filesize

              6.5MB

            • memory/3740-115-0x00000000074E0000-0x0000000007556000-memory.dmp

              Filesize

              472KB

            • memory/3740-97-0x0000000002AF0000-0x0000000002B26000-memory.dmp

              Filesize

              216KB

            • memory/3740-98-0x0000000005600000-0x0000000005C28000-memory.dmp

              Filesize

              6.2MB

            • memory/3740-99-0x0000000005430000-0x0000000005452000-memory.dmp

              Filesize

              136KB

            • memory/3740-114-0x00000000069A0000-0x00000000069E4000-memory.dmp

              Filesize

              272KB

            • memory/3740-100-0x0000000005D30000-0x0000000005D96000-memory.dmp

              Filesize

              408KB

            • memory/3740-101-0x0000000005DA0000-0x0000000005E06000-memory.dmp

              Filesize

              408KB

            • memory/3740-111-0x0000000005E10000-0x0000000006164000-memory.dmp

              Filesize

              3.3MB

            • memory/5292-82-0x0000000000D80000-0x0000000000D8A000-memory.dmp

              Filesize

              40KB

            • memory/5292-91-0x0000000000D80000-0x0000000000D8A000-memory.dmp

              Filesize

              40KB

            • memory/5292-80-0x0000000000840000-0x0000000000C73000-memory.dmp

              Filesize

              4.2MB

            • memory/5292-81-0x0000000000840000-0x0000000000C73000-memory.dmp

              Filesize

              4.2MB

            • memory/5292-89-0x0000000000D80000-0x0000000000D8A000-memory.dmp

              Filesize

              40KB

            • memory/5640-23-0x0000000000400000-0x000000000041C000-memory.dmp

              Filesize

              112KB