Resubmissions

20/05/2025, 20:23

250520-y572ss1qv8 10

20/05/2025, 20:10

250520-yx65jabr7v 10

14/05/2025, 08:25

250514-kbrwtsfk31 10

Analysis

  • max time kernel
    300s
  • max time network
    308s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/05/2025, 20:23

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:4968
    • 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:4976
      • 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:3596
        • 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\b6a7dxqj.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1788
          • 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\RES7D8D.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC7D8C.tmp"
            5⤵
              PID:1892
      • 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:228
      • 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:2084
        • 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:3568
          • 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:4608
      • 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:4400
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:3924
      • 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:1212
        • 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:1524
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Microsoft\ugtccsjd\tscfdbid.exe
      1⤵
        PID:5028

      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\RES7D8D.tmp

              Filesize

              1KB

              MD5

              30d316c18faff5b0625a7443cf1abd3d

              SHA1

              8e025b4d9e2ef18be357f6e9d83f49728e9ab8b1

              SHA256

              4efa842e519698b090fc21464f92bed4a17941a26f7b30b107563201d153fc30

              SHA512

              f8611afa5b45a92c88d2ccf950982126cbe76f959e5ab790b992e006e971f25dc330414d0405d2f7f5735a41bab9140f0550e003eb332244a0866a74b6318329

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cif2n2k5.5mj.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

            • C:\Users\Admin\AppData\Local\Temp\b6a7dxqj.dll

              Filesize

              5KB

              MD5

              812639561262b3287693288cb4c2ab9c

              SHA1

              8a0016d21031aadcca43afbcda914edd09939a27

              SHA256

              84f81217f4e0647cd38af36e3a4619827113bfafc11d7e26240cec6bae4d2754

              SHA512

              ceb07c7de4266e9109aa5ea74f3d7fc0a4f17c6d49c607f6daf9cc7cd47f76ab7004ad1cf2e63b100625f6fb3572ba0235dac14372a7eb95194b00dd182fa36c

            • C:\Users\Admin\AppData\Local\Temp\b6a7dxqj.pdb

              Filesize

              7KB

              MD5

              79519adf57acd80dacd6d38ee2d3e62e

              SHA1

              3e00b282c3314b78fe0be5531af62882576e77fd

              SHA256

              4dd369de8844095f1d9c03d6df7492df876f1fd3b452934caeb6e3f7516fe767

              SHA512

              8c9e0a72075133959441007bb01ba1f2f26891bde764472c94d19af1e8bee1e8de73dd1886ec6d520ced3297544d72a9256ec6eb627b14889642780f75698171

            • 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\CSC7D8C.tmp

              Filesize

              652B

              MD5

              8b4b2bc49fd3271a47a361e0e7dcd1cb

              SHA1

              c26710ac0cc18365027adba6771206a296c3c4e8

              SHA256

              bb6294d53ae48ba2e20cd401589b73b7479957ce8b8bdd38a9eb15307b576857

              SHA512

              46ecd502097ce72d0561fbd1f84435d65a184e1707f24b014dd4ccd8d40cf1b2f8be5e606ff079750ad88a197684f5163be2312f4d19e6ffc2b7f86039403758

            • \??\c:\Users\Admin\AppData\Local\Temp\b6a7dxqj.0.cs

              Filesize

              4KB

              MD5

              a0d1b6f34f315b4d81d384b8ebcdeaa5

              SHA1

              794c1ff4f2a28e0c631a783846ecfffdd4c7ae09

              SHA256

              0b3a3f8f11eb6f50fe67943f2b73c5824614f31c2e0352cc234927d7cb1a52e0

              SHA512

              0a89293d731c5bca05e73148f85a740b324fc877f2fb05cde1f68e2098329fbca552d78249a46f4a1da15a450c8e754c73be20c652f7089d5cfec445ce950a0e

            • \??\c:\Users\Admin\AppData\Local\Temp\b6a7dxqj.cmdline

              Filesize

              309B

              MD5

              31a3b83ee44c557f9f320a6d8d81f3c0

              SHA1

              1edc1b5922294ef1ad32348006cfe74db22f6edc

              SHA256

              d5c101e1983525c72ec6d238918ddad74af4bf18a9ec7743ff75cc632004181a

              SHA512

              d1c439daa102fc7e226435d79e10e4a37b6964e7c3a4099353e51adc014c69c23d78b34f6223386a048a471abf1929742d1f0c0852a32143acf42cbe7084be4d

            • memory/228-20-0x0000000000400000-0x000000000041C000-memory.dmp

              Filesize

              112KB

            • memory/1212-95-0x0000000000400000-0x0000000000485000-memory.dmp

              Filesize

              532KB

            • memory/1212-77-0x0000000000400000-0x0000000000485000-memory.dmp

              Filesize

              532KB

            • memory/1524-113-0x0000000006680000-0x00000000066C4000-memory.dmp

              Filesize

              272KB

            • memory/1524-114-0x0000000007430000-0x00000000074A6000-memory.dmp

              Filesize

              472KB

            • memory/1524-115-0x0000000007B30000-0x00000000081AA000-memory.dmp

              Filesize

              6.5MB

            • memory/1524-112-0x0000000006150000-0x000000000619C000-memory.dmp

              Filesize

              304KB

            • memory/1524-111-0x0000000006100000-0x000000000611E000-memory.dmp

              Filesize

              120KB

            • memory/1524-110-0x0000000005C70000-0x0000000005FC4000-memory.dmp

              Filesize

              3.3MB

            • memory/1524-116-0x00000000074B0000-0x00000000074CA000-memory.dmp

              Filesize

              104KB

            • memory/1524-100-0x0000000005B00000-0x0000000005B66000-memory.dmp

              Filesize

              408KB

            • memory/1524-99-0x0000000005A20000-0x0000000005A86000-memory.dmp

              Filesize

              408KB

            • memory/1524-98-0x0000000005130000-0x0000000005152000-memory.dmp

              Filesize

              136KB

            • memory/1524-97-0x0000000005300000-0x0000000005928000-memory.dmp

              Filesize

              6.2MB

            • memory/1524-96-0x00000000027D0000-0x0000000002806000-memory.dmp

              Filesize

              216KB

            • memory/3596-73-0x0000000001210000-0x0000000001218000-memory.dmp

              Filesize

              32KB

            • memory/3596-59-0x00000000011F0000-0x00000000011F8000-memory.dmp

              Filesize

              32KB

            • memory/3596-57-0x000000001BE50000-0x000000001C31E000-memory.dmp

              Filesize

              4.8MB

            • memory/3596-58-0x000000001C320000-0x000000001C3BC000-memory.dmp

              Filesize

              624KB

            • memory/3924-78-0x0000000000A80000-0x0000000000EB3000-memory.dmp

              Filesize

              4.2MB

            • memory/3924-79-0x0000000000A80000-0x0000000000EB3000-memory.dmp

              Filesize

              4.2MB

            • memory/3924-80-0x0000000000FC0000-0x0000000000FCA000-memory.dmp

              Filesize

              40KB

            • memory/3924-92-0x0000000000FC0000-0x0000000000FCA000-memory.dmp

              Filesize

              40KB

            • memory/3924-90-0x0000000000FC0000-0x0000000000FCA000-memory.dmp

              Filesize

              40KB

            • memory/4400-84-0x0000000000110000-0x000000000011A000-memory.dmp

              Filesize

              40KB

            • memory/4400-86-0x0000000000400000-0x0000000000404000-memory.dmp

              Filesize

              16KB

            • memory/4400-23-0x0000000000110000-0x000000000011A000-memory.dmp

              Filesize

              40KB

            • memory/4400-21-0x0000000000400000-0x0000000000404000-memory.dmp

              Filesize

              16KB

            • memory/4976-54-0x0000000000400000-0x000000000047B000-memory.dmp

              Filesize

              492KB