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
    303s
  • 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, 20:10

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:2736
    • 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:5620
      • 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:4924
        • 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\03gbpq09.cmdline"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3964
          • 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\RESAA99.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCAA88.tmp"
            5⤵
              PID:5148
      • 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:3996
      • 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:2200
        • 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:4752
          • 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:2276
      • 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:2376
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:5744
      • 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:3704
        • 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:5528
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Microsoft\uvwfdfth\rvcvvvhi.exe
      1⤵
        PID:4568

      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\03gbpq09.dll

              Filesize

              5KB

              MD5

              5ab6df0b46230e0ab42392e628c3bdb6

              SHA1

              22845ef17bc68467876f34b0ad9169453a47368d

              SHA256

              b9228a1a3dfd2458e87f0cc4bc9ebed71b1d5874ecb9b4159c1456956f3943b9

              SHA512

              1087460f8e751b47e5298baf9d3bb2479d300dd351289a0d4df2495bd9e5934988299f581866897909ad020a06946306ce11000f14654d0c415229029247ca30

            • C:\Users\Admin\AppData\Local\Temp\03gbpq09.pdb

              Filesize

              7KB

              MD5

              16b4a5f5d1fde94b3040be9b8bdf9326

              SHA1

              ebdbe8c18d892cdbebc5ec9a64b9e30218df59d5

              SHA256

              881dad11eba0b85ea33c2ee0c7fd7b50aa6b8a9ad4f9073617191275116fc428

              SHA512

              19a6031fd9c66ab9edc25b3071de98364cacb0c6c9031270f43cad40af49ea2aa6524b6264f7019f588fc3c264293d7bb3a774e426ae248a9d28513cbecd597e

            • C:\Users\Admin\AppData\Local\Temp\RESAA99.tmp

              Filesize

              1KB

              MD5

              3bcf69419742ed41df7a637de1358011

              SHA1

              48952432311f75b055208815dcd6f731be6ad17c

              SHA256

              3661ae65caac676a024609e7cb6978e9637dd77e3521a56634ca379255246b66

              SHA512

              d71c2006b4581b2ec9fc5c530acd09e56d978ebab20d1eabc4f6b6eb7a71cff988b323f1606479b3dab748653714a0d66523678e691225bdfa00e51313ceffca

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1fxcxj3g.2lu.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

            • 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\03gbpq09.0.cs

              Filesize

              4KB

              MD5

              a0d1b6f34f315b4d81d384b8ebcdeaa5

              SHA1

              794c1ff4f2a28e0c631a783846ecfffdd4c7ae09

              SHA256

              0b3a3f8f11eb6f50fe67943f2b73c5824614f31c2e0352cc234927d7cb1a52e0

              SHA512

              0a89293d731c5bca05e73148f85a740b324fc877f2fb05cde1f68e2098329fbca552d78249a46f4a1da15a450c8e754c73be20c652f7089d5cfec445ce950a0e

            • \??\c:\Users\Admin\AppData\Local\Temp\03gbpq09.cmdline

              Filesize

              309B

              MD5

              f264a7a7f95b2991c2e0f2613aeab340

              SHA1

              d7f899db46a5313aa551c9ee87a62e5dfa14d8c8

              SHA256

              db7c846956f812075a39c3f23c44c07bf4cb1044744cbb6f5a3d839cc0b9bcf2

              SHA512

              00e25557cf4f8af41262f905eeafa18bf59d1701f7dfb4400a8e9ed117bd283e6e07fda33fe4f30c8627a94cfd6dbf3d2e065b3b03ac03bdeef7808207d21594

            • \??\c:\Users\Admin\AppData\Local\Temp\CSCAA88.tmp

              Filesize

              652B

              MD5

              799e8505c58c66d5038e40f5062f9c00

              SHA1

              cce505c9fa21c53e1fabfefdc399c938c20edb5c

              SHA256

              0e4e9445c4fcdf29a48c9770e4cc729321ad3dfda139320b397ca7653298eb4f

              SHA512

              0975a763611ebcf65adaed6267c458723bbef72d78ee7531054db0722c43e061731982753afe3a8c128a0adb8d70ac9ace118f83d65a05f97775b61aaa66fd48

            • memory/2376-78-0x0000000000110000-0x000000000011A000-memory.dmp

              Filesize

              40KB

            • memory/2376-87-0x0000000000110000-0x000000000011A000-memory.dmp

              Filesize

              40KB

            • memory/2376-19-0x0000000000400000-0x0000000000404000-memory.dmp

              Filesize

              16KB

            • memory/2376-20-0x0000000000110000-0x000000000011A000-memory.dmp

              Filesize

              40KB

            • memory/2376-24-0x0000000000110000-0x000000000011A000-memory.dmp

              Filesize

              40KB

            • memory/3704-79-0x0000000000400000-0x0000000000485000-memory.dmp

              Filesize

              532KB

            • memory/3704-96-0x0000000000400000-0x0000000000485000-memory.dmp

              Filesize

              532KB

            • memory/3996-13-0x0000000000400000-0x000000000041C000-memory.dmp

              Filesize

              112KB

            • memory/4924-58-0x000000001C380000-0x000000001C84E000-memory.dmp

              Filesize

              4.8MB

            • memory/4924-60-0x0000000001770000-0x0000000001778000-memory.dmp

              Filesize

              32KB

            • memory/4924-74-0x00000000018A0000-0x00000000018A8000-memory.dmp

              Filesize

              32KB

            • memory/4924-59-0x000000001C850000-0x000000001C8EC000-memory.dmp

              Filesize

              624KB

            • memory/5528-99-0x0000000004E30000-0x0000000004E52000-memory.dmp

              Filesize

              136KB

            • memory/5528-101-0x0000000005690000-0x00000000056F6000-memory.dmp

              Filesize

              408KB

            • memory/5528-117-0x0000000007090000-0x00000000070AA000-memory.dmp

              Filesize

              104KB

            • memory/5528-116-0x00000000076F0000-0x0000000007D6A000-memory.dmp

              Filesize

              6.5MB

            • memory/5528-115-0x0000000006FF0000-0x0000000007066000-memory.dmp

              Filesize

              472KB

            • memory/5528-97-0x00000000023B0000-0x00000000023E6000-memory.dmp

              Filesize

              216KB

            • memory/5528-98-0x0000000004F80000-0x00000000055A8000-memory.dmp

              Filesize

              6.2MB

            • memory/5528-114-0x0000000006E60000-0x0000000006EA4000-memory.dmp

              Filesize

              272KB

            • memory/5528-100-0x0000000005620000-0x0000000005686000-memory.dmp

              Filesize

              408KB

            • memory/5528-113-0x0000000005D20000-0x0000000005D6C000-memory.dmp

              Filesize

              304KB

            • memory/5528-112-0x0000000005CF0000-0x0000000005D0E000-memory.dmp

              Filesize

              120KB

            • memory/5528-111-0x0000000005700000-0x0000000005A54000-memory.dmp

              Filesize

              3.3MB

            • memory/5620-55-0x0000000000400000-0x000000000047B000-memory.dmp

              Filesize

              492KB

            • memory/5744-82-0x00000000003D0000-0x00000000003DA000-memory.dmp

              Filesize

              40KB

            • memory/5744-80-0x00000000004D0000-0x0000000000903000-memory.dmp

              Filesize

              4.2MB

            • memory/5744-81-0x00000000004D0000-0x0000000000903000-memory.dmp

              Filesize

              4.2MB

            • memory/5744-93-0x00000000003D0000-0x00000000003DA000-memory.dmp

              Filesize

              40KB

            • memory/5744-91-0x00000000003D0000-0x00000000003DA000-memory.dmp

              Filesize

              40KB