Analysis

  • max time kernel
    64s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    12/01/2024, 10:48

General

  • Target
    ad1e983cf567b1dc01c123b5e90ae9a8.exe
  • Size 256KB
  • Sample240112-mv6kfaeddm
  • SHA256 5bd2b2d7fd28e9ae752fd2e5b669d4b7882f733bb22a4217a4822c5325246647
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2022

C2
  • http://selebration17io.io/index.php

  • http://vacantion18ffeu.cc/index.php

  • http://valarioulinity1.net/index.php

  • http://buriatiarutuhuob.net/index.php

  • http://cassiosssionunu.me/index.php

  • http://sulugilioiu19.net/index.php

  • http://goodfooggooftool.net/index.php

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Deletes itself 2 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 6 IoCs
  • UPX packed file 14 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad1e983cf567b1dc01c123b5e90ae9a8.exe
    "C:\Users\Admin\AppData\Local\Temp\ad1e983cf567b1dc01c123b5e90ae9a8.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:1732
  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\52F.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2944
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\52F.dll
      2⤵
      • Loads dropped DLL
      PID:2828
  • C:\Users\Admin\AppData\Local\Temp\33FD.exe
    C:\Users\Admin\AppData\Local\Temp\33FD.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2616
    • C:\Users\Admin\AppData\Local\Temp\33FD.exe
      C:\Users\Admin\AppData\Local\Temp\33FD.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      PID:2604
  • C:\Users\Admin\AppData\Local\Temp\8365.exe
    C:\Users\Admin\AppData\Local\Temp\8365.exe
    1⤵
    • Executes dropped EXE
    PID:2840
  • C:\Users\Admin\AppData\Local\Temp\8C99.exe
    C:\Users\Admin\AppData\Local\Temp\8C99.exe
    1⤵
      PID:852
    • C:\Users\Admin\AppData\Local\Temp\ad1e983cf567b1dc01c123b5e90ae9a8.exe
      "C:\Users\Admin\AppData\Local\Temp\ad1e983cf567b1dc01c123b5e90ae9a8.exe"
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1732
    • C:\Windows\system32\regsvr32.exe
      regsvr32 /s C:\Users\Admin\AppData\Local\Temp\52F.dll
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2944
      • C:\Windows\SysWOW64\regsvr32.exe
        /s C:\Users\Admin\AppData\Local\Temp\52F.dll
        2⤵
        • Loads dropped DLL
        PID:2828
    • C:\Users\Admin\AppData\Local\Temp\33FD.exe
      C:\Users\Admin\AppData\Local\Temp\33FD.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2616
      • C:\Users\Admin\AppData\Local\Temp\33FD.exe
        C:\Users\Admin\AppData\Local\Temp\33FD.exe
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        PID:2604
    • C:\Users\Admin\AppData\Local\Temp\8365.exe
      C:\Users\Admin\AppData\Local\Temp\8365.exe
      1⤵
      • Executes dropped EXE
      PID:2840
    • C:\Users\Admin\AppData\Local\Temp\8C99.exe
      C:\Users\Admin\AppData\Local\Temp\8C99.exe
      1⤵
        PID:852

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            33FD.exe

            • Path C:\Users\Admin\AppData\Local\Temp\33FD.exe
            • Size 1024KB
            • SHA256 021b05cba3bbdf82299ab399b0f1bb03176d6ae7b31b3252cf87bba2401155d0
            • MD5 SHA1 SHA512 SSDEEP

            33FD.exe

            • Path C:\Users\Admin\AppData\Local\Temp\33FD.exe
            • Size 1.9MB
            • SHA256 b68fc549194dfd2646a1e122544eb1e20df77f8a317f94e24cd41fb65d112e4b
            • MD5 SHA1 SHA512 SSDEEP

            33FD.exe

            • Path C:\Users\Admin\AppData\Local\Temp\33FD.exe
            • Size 1.3MB
            • SHA256 2095b012ab6a316fb6b3d893ecd9d58f7fc1af5957cfe57587b8e6c2077b893d
            • MD5 SHA1 SHA512 SSDEEP

            33FD.exe

            • Path C:\Users\Admin\AppData\Local\Temp\33FD.exe
            • Size 362KB
            • SHA256 771b242fb691dcab2a66a766e322af188844dd116257e757809047849bdfe173
            • MD5 SHA1 SHA512 SSDEEP

            52F.dll

            • Path C:\Users\Admin\AppData\Local\Temp\52F.dll
            • Size 2.1MB
            • SHA256 2145cc1bb4315c608aa187ccbabe3aa5699d71727aa65a2b0fef88f01e21c377
            • MD5 SHA1 SHA512 SSDEEP

            8365.exe

            • Path C:\Users\Admin\AppData\Local\Temp\8365.exe
            • Size 311KB
            • SHA256 7368a343ae9967ce44d151f56497053681d22439c6901a1bdd6b945c70c277f6
            • MD5 SHA1 SHA512 SSDEEP

            8C99.exe

            • Path C:\Users\Admin\AppData\Local\Temp\8C99.exe
            • Size 2.1MB
            • SHA256 0e22c37b7d933ab481d28a74e07756ab3bdd7aab02af6834b9b46ac296f5c371
            • MD5 SHA1 SHA512 SSDEEP

            8C99.exe

            • Path C:\Users\Admin\AppData\Local\Temp\8C99.exe
            • Size 3.1MB
            • SHA256 7a37530e305aa0b65e4a37e9edf7ff38a3ea1be6d7a3f89b28c35773944c4b7a
            • MD5 SHA1 SHA512 SSDEEP

            33FD.exe

            • Path \Users\Admin\AppData\Local\Temp\33FD.exe
            • Size 1.4MB
            • SHA256 7b65943873e5dc0e5a3cb6af85f3846dc2a50c06c107f09c458122bbeba15ff1
            • MD5 SHA1 SHA512 SSDEEP

            memory/1420-4-0x00000000025A0000-0x00000000025B6000-memory.dmp

            memory/1420-4-0x00000000025A0000-0x00000000025B6000-memory.dmp

            memory/1732-5-0x0000000000400000-0x0000000000446000-memory.dmp

            memory/1732-2-0x0000000000220000-0x000000000022B000-memory.dmp

            memory/1732-1-0x0000000000610000-0x0000000000710000-memory.dmp

            memory/1732-3-0x0000000000400000-0x0000000000446000-memory.dmp

            memory/1732-1-0x0000000000610000-0x0000000000710000-memory.dmp

            memory/1732-5-0x0000000000400000-0x0000000000446000-memory.dmp

            memory/1732-2-0x0000000000220000-0x000000000022B000-memory.dmp

            memory/1732-3-0x0000000000400000-0x0000000000446000-memory.dmp

            memory/2604-56-0x0000000002840000-0x000000000295E000-memory.dmp

            memory/2604-37-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-38-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-40-0x0000000000280000-0x0000000000286000-memory.dmp

            memory/2604-69-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-57-0x0000000002840000-0x000000000295E000-memory.dmp

            memory/2604-56-0x0000000002840000-0x000000000295E000-memory.dmp

            memory/2604-54-0x0000000002840000-0x000000000295E000-memory.dmp

            memory/2604-52-0x0000000002D70000-0x0000000002EAD000-memory.dmp

            memory/2604-40-0x0000000000280000-0x0000000000286000-memory.dmp

            memory/2604-52-0x0000000002D70000-0x0000000002EAD000-memory.dmp

            memory/2604-54-0x0000000002840000-0x000000000295E000-memory.dmp

            memory/2604-36-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-57-0x0000000002840000-0x000000000295E000-memory.dmp

            memory/2604-35-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-69-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-34-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-31-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            memory/2604-38-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-37-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-36-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-35-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-34-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-31-0x0000000000400000-0x0000000000848000-memory.dmp

            memory/2604-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            memory/2616-24-0x0000000000830000-0x00000000009E8000-memory.dmp

            memory/2616-25-0x0000000000830000-0x00000000009E8000-memory.dmp

            memory/2616-26-0x00000000021A0000-0x0000000002357000-memory.dmp

            memory/2616-24-0x0000000000830000-0x00000000009E8000-memory.dmp

            memory/2616-26-0x00000000021A0000-0x0000000002357000-memory.dmp

            memory/2616-25-0x0000000000830000-0x00000000009E8000-memory.dmp

            memory/2828-49-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-45-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-14-0x00000000000C0000-0x00000000000C6000-memory.dmp

            memory/2828-15-0x0000000010000000-0x0000000010227000-memory.dmp

            memory/2828-14-0x00000000000C0000-0x00000000000C6000-memory.dmp

            memory/2828-43-0x0000000002380000-0x00000000024BD000-memory.dmp

            memory/2828-44-0x0000000010000000-0x0000000010227000-memory.dmp

            memory/2828-15-0x0000000010000000-0x0000000010227000-memory.dmp

            memory/2828-46-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-48-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-49-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-48-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-46-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-45-0x00000000024C0000-0x00000000025DE000-memory.dmp

            memory/2828-44-0x0000000010000000-0x0000000010227000-memory.dmp

            memory/2828-43-0x0000000002380000-0x00000000024BD000-memory.dmp