Resubmissions

01/04/2025, 21:24

250401-z8184awycs 10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250217-en
  • resource tags

    arch:x64arch:x86image:win11-20250217-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    26/02/2025, 02:02

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
  • 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:4364
    • 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:2388
      • 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:2240
        • 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\psir3qaz.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4400
          • 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\RES89C2.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC89C1.tmp"
            5⤵
              PID:4444
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe"
            4⤵
              PID:3908
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe"
              4⤵
                PID:3864
          • 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:4312
          • 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:916
            • 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:1508
              • 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:2548
          • 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:2680
            • C:\Windows\SysWOW64\explorer.exe
              explorer.exe
              3⤵
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              PID:4060
          • 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:2836
            • 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:3368

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\ucp\usc.exe

          Filesize

          4.0MB

          MD5

          b100b373d645bf59b0487dbbda6c426d

          SHA1

          44a4ad2913f5f35408b8c16459dcce3f101bdcc7

          SHA256

          84d7fd0a93d963e9808212917f79fe2d485bb7fbc94ee374a141bbd15da725b7

          SHA512

          69483fed79f33da065b1cc65a2576ba268c78990545070f6f76fca8f48aaec8274faecdc9bcf92bf84a87809a318b159d1a3c835f848a6eea6c163f41612bf9b

        • C:\Users\Admin\AppData\Local\Temp\RES89C2.tmp

          Filesize

          1KB

          MD5

          a20e95e9db92dee0cd947aa4b5d5edaf

          SHA1

          741f5acb4e6bc9d134be8a1d54546e3436b9af36

          SHA256

          511f986081034d6bf6a26d349a0d2b7340b1ffc571aac935153d792992b5eabc

          SHA512

          d274eca7520e985eaa9fd0db4e70249b1b0456f90a116f0ce5257e8c138b20c5a203f0f0365e57931a6fe87d2a4b23d7b40f3b7217c892daf5f0896b180e0357

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dtaahq1t.vuv.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\psir3qaz.dll

          Filesize

          5KB

          MD5

          ce7df99d85f6d63e2c79fabe6f9b459a

          SHA1

          1d59612734ed5ed6555fc360b9be4556f03f466a

          SHA256

          9ee804ba577a9a6625c9b1ca24896bd8a80beb9261059a0dce18d6435383d002

          SHA512

          8bd467c0a710736deacecd9bba7c43c671c99350018a1da8050c5dd4259cd2a2b1e64b27d1d74ba1ab05ac7804ff89f7dc2d864b35eff7759fadb6f97c2f7173

        • C:\Users\Admin\AppData\Local\Temp\psir3qaz.pdb

          Filesize

          7KB

          MD5

          3c3c45533af304843a961e04999b367f

          SHA1

          dce484556b702116acaf07a192ab6181917dfee3

          SHA256

          a8f8f72cff38409d251d4f26d5c9c854f30e38afb75d1b47d666ec095374e384

          SHA512

          a00018ec0878f79931da2b821f386fe483e315ab454be1723393e2c997f8ffa81134920293caccd9bd2976a8b8426e273677366aa180e97bd9db3369af2e0579

        • 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\CSC89C1.tmp

          Filesize

          652B

          MD5

          27bf962da3edfd6f84eec1f5ed30d509

          SHA1

          ca493bba200a8edddb8ea36c9c20b99bf87e62d3

          SHA256

          a8e84da4f06a7093fec3dc3580480d1a94ea2acb889513de195e679d49af3a49

          SHA512

          ce380282376d59a19969ea0d29f850ddd1f191c6da388310fd9a5c05d7dbe3eb5045c6496e844c37c1e48ce57deb7b9c01ca406ed7805744019d90ef14ffa79b

        • \??\c:\Users\Admin\AppData\Local\Temp\psir3qaz.0.cs

          Filesize

          4KB

          MD5

          a0d1b6f34f315b4d81d384b8ebcdeaa5

          SHA1

          794c1ff4f2a28e0c631a783846ecfffdd4c7ae09

          SHA256

          0b3a3f8f11eb6f50fe67943f2b73c5824614f31c2e0352cc234927d7cb1a52e0

          SHA512

          0a89293d731c5bca05e73148f85a740b324fc877f2fb05cde1f68e2098329fbca552d78249a46f4a1da15a450c8e754c73be20c652f7089d5cfec445ce950a0e

        • \??\c:\Users\Admin\AppData\Local\Temp\psir3qaz.cmdline

          Filesize

          309B

          MD5

          e5259170deb14d27a6cfebc8bef4a06d

          SHA1

          5f58c6f8ce05a4d35e7c96788149a151efa1e28a

          SHA256

          76f75e55b51833819f30cecd99115ec48b1126d1647e42db374f16c19c5210f2

          SHA512

          e036eacf038e3ce427d7dfb20b9bbf7453c73dc5d06995b348680b6f0a8923ac35b2027657db0485785c61c3ec0c569bccc53e76867969c0ba8e05dad00d39cf

        • memory/2240-57-0x000000001C1F0000-0x000000001C6BE000-memory.dmp

          Filesize

          4.8MB

        • memory/2240-58-0x000000001C6C0000-0x000000001C75C000-memory.dmp

          Filesize

          624KB

        • memory/2240-59-0x000000001BD00000-0x000000001BD08000-memory.dmp

          Filesize

          32KB

        • memory/2240-73-0x000000001C770000-0x000000001C778000-memory.dmp

          Filesize

          32KB

        • memory/2388-54-0x0000000000400000-0x000000000047B000-memory.dmp

          Filesize

          492KB

        • memory/2680-84-0x00000000004E0000-0x00000000004EA000-memory.dmp

          Filesize

          40KB

        • memory/2680-23-0x00000000004E0000-0x00000000004EA000-memory.dmp

          Filesize

          40KB

        • memory/2680-16-0x0000000000400000-0x0000000000404000-memory.dmp

          Filesize

          16KB

        • memory/2680-86-0x0000000000400000-0x0000000000404000-memory.dmp

          Filesize

          16KB

        • memory/2836-77-0x0000000000400000-0x0000000000485000-memory.dmp

          Filesize

          532KB

        • memory/2836-97-0x0000000000400000-0x0000000000485000-memory.dmp

          Filesize

          532KB

        • memory/3368-102-0x0000000006220000-0x0000000006286000-memory.dmp

          Filesize

          408KB

        • memory/3368-111-0x0000000006290000-0x00000000065E7000-memory.dmp

          Filesize

          3.3MB

        • memory/3368-114-0x0000000007910000-0x0000000007956000-memory.dmp

          Filesize

          280KB

        • memory/3368-113-0x00000000067D0000-0x000000000681C000-memory.dmp

          Filesize

          304KB

        • memory/3368-112-0x0000000006790000-0x00000000067AE000-memory.dmp

          Filesize

          120KB

        • memory/3368-98-0x0000000002FA0000-0x0000000002FD6000-memory.dmp

          Filesize

          216KB

        • memory/3368-99-0x0000000005A20000-0x000000000604A000-memory.dmp

          Filesize

          6.2MB

        • memory/3368-100-0x0000000006050000-0x0000000006072000-memory.dmp

          Filesize

          136KB

        • memory/3368-101-0x00000000061B0000-0x0000000006216000-memory.dmp

          Filesize

          408KB

        • memory/4060-79-0x0000000000B00000-0x0000000000F2C000-memory.dmp

          Filesize

          4.2MB

        • memory/4060-78-0x0000000000B00000-0x0000000000F2C000-memory.dmp

          Filesize

          4.2MB

        • memory/4060-80-0x0000000000A20000-0x0000000000A2A000-memory.dmp

          Filesize

          40KB

        • memory/4060-90-0x0000000000A20000-0x0000000000A2A000-memory.dmp

          Filesize

          40KB

        • memory/4060-92-0x0000000000A20000-0x0000000000A2A000-memory.dmp

          Filesize

          40KB

        • memory/4312-18-0x0000000000400000-0x000000000041C000-memory.dmp

          Filesize

          112KB