Analysis

  • max time kernel
    100s
  • max time network
    101s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    20/02/2024, 18:05

General

  • Target
    setup_installer.exe
  • Size 1.5MB
  • Sample240220-wpjcdsdc35
  • SHA256 b14218cb639c6afa35a66cf418035ce10475b53f5386896a44327fd48d8447c8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nullmixer

C2
  • http://wxkeww.xyz/

Extracted

Family
  • smokeloader

Botnet
  • pub6

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://conceitosseg.com/upload/

  • http://integrasidata.com/upload/

  • http://ozentekstil.com/upload/

  • http://finbelportal.com/upload/

  • http://telanganadigital.com/upload/

rc4.i32
rc4.i32

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs
  • NullMixer

    NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.

  • PrivateLoader

    PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

  • RisePro

    RisePro stealer is an infostealer distributed by PrivateLoader.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • ASPack v2.12-2.42 5 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 23 IoCs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
    "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2092
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_1.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2696
        • C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_1.exe
          karotima_1.exe
          4⤵
          • Modifies Windows Defender Real-time Protection settings
          • Executes dropped EXE
          • Loads dropped DLL
          • Modifies system certificate store
          PID:2600
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_2.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2604
        • C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_2.exe
          karotima_2.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks SCSI registry key(s)
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          PID:1712
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 372
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2888

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        karotima_1.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_1.exe
        • Size 337KB
        • SHA256 26a465712504b9c6e33b9bd66245f66e1e4b0b14233f9d2d875077fade0fce54
        • MD5 SHA1 SHA512 SSDEEP

        karotima_1.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_1.txt
        • Size 362KB
        • SHA256 58d0419de5b71bc127963de102e217c94b20b00cdd119fe592b9dd3b75226ca3
        • MD5 SHA1 SHA512 SSDEEP

        karotima_2.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_2.exe
        • Size 183KB
        • SHA256 1a04b31ab225f1822b7b972d37e2490bb89fd7bd05aa37155c45f5a0287e8305
        • MD5 SHA1 SHA512 SSDEEP

        karotima_2.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_2.txt
        • Size 222KB
        • SHA256 9ff44c4da853cdbe606d2cfe4d04b410c3ae603acf0f1d3f75195b6236e0e123
        • MD5 SHA1 SHA512 SSDEEP

        libcurl.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\libcurl.dll
        • Size 218KB
        • SHA256 0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e
        • MD5 SHA1 SHA512 SSDEEP

        libcurlpp.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\libcurlpp.dll
        • Size 54KB
        • SHA256 43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f
        • MD5 SHA1 SHA512 SSDEEP

        libstdc++-6.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8B681E86\libstdc++-6.dll
        • Size 249KB
        • SHA256 2193045512aaa2243be0983ba6f11d3e39e69672a5ecddcb63ee06582a135624
        • MD5 SHA1 SHA512 SSDEEP

        CabA8A0.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\CabA8A0.tmp
        • Size 65KB
        • SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
        • MD5 SHA1 SHA512 SSDEEP

        TarA8E2.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\TarA8E2.tmp
        • Size 171KB
        • SHA256 4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f
        • MD5 SHA1 SHA512 SSDEEP

        karotima_1.exe

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_1.exe
        • Size 223KB
        • SHA256 e2e9a0b5a04b49d0e6cd6df3e5efd4348d1767b6d77e803b0060245bcde02e0e
        • MD5 SHA1 SHA512 SSDEEP

        karotima_1.exe

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_1.exe
        • Size 98KB
        • SHA256 098ec317b15331df8b69f3ebd811340fee5d4601ac068aadb234e900fe4e1372
        • MD5 SHA1 SHA512 SSDEEP

        karotima_1.exe

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_1.exe
        • Size 79KB
        • SHA256 cc5e020287006f0498d328f3e888d99cd05279048588aee947f22b53b642cd1b
        • MD5 SHA1 SHA512 SSDEEP

        karotima_2.exe

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_2.exe
        • Size 198KB
        • SHA256 f3d554f5e9d4eaa1170d76dd143bcb33c2c46d70fb235868e5cad54dd38caebc
        • MD5 SHA1 SHA512 SSDEEP

        karotima_2.exe

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\karotima_2.exe
        • Size 48KB
        • SHA256 bfd66ecca9cf618aeec0b491967aa6970b1254fcb1d15626f9bc946a56bac48b
        • MD5 SHA1 SHA512 SSDEEP

        libgcc_s_dw2-1.dll

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\libgcc_s_dw2-1.dll
        • Size 113KB
        • SHA256 59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e
        • MD5 SHA1 SHA512 SSDEEP

        libstdc++-6.dll

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\libstdc++-6.dll
        • Size 199KB
        • SHA256 81eb56f6e895d886ab25c5d476a96924444b960f48e494d7be94b8b711feb360
        • MD5 SHA1 SHA512 SSDEEP

        libwinpthread-1.dll

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\libwinpthread-1.dll
        • Size 69KB
        • SHA256 509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723
        • MD5 SHA1 SHA512 SSDEEP

        setup_install.exe

        • Path \Users\Admin\AppData\Local\Temp\7zS8B681E86\setup_install.exe
        • Size 290KB
        • SHA256 f7dec887c3345567ce86ce60cc8841a6a54eda35049811049debd1c5451656f4
        • MD5 SHA1 SHA512 SSDEEP

        CC4F.tmp

        • Path \Users\Admin\AppData\Local\Temp\CC4F.tmp
        • Size 1.2MB
        • SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
        • MD5 SHA1 SHA512 SSDEEP

        memory/1220-124-0x0000000002AD0000-0x0000000002AE5000-memory.dmp

        memory/1712-117-0x0000000002CD0000-0x0000000002DD0000-memory.dmp

        memory/1712-118-0x0000000000240000-0x0000000000249000-memory.dmp

        memory/1712-122-0x0000000000400000-0x0000000002B7B000-memory.dmp

        memory/1712-125-0x0000000000400000-0x0000000002B7B000-memory.dmp

        memory/1712-128-0x0000000000240000-0x0000000000249000-memory.dmp

        memory/1720-28-0x0000000002910000-0x0000000002A2E000-memory.dmp

        memory/1720-27-0x0000000002910000-0x0000000002A2E000-memory.dmp

        memory/1720-20-0x0000000002910000-0x0000000002A2E000-memory.dmp

        memory/2092-52-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2092-64-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-66-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-67-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-65-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-61-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-62-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-63-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-59-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2092-60-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2092-57-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2092-56-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2092-55-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2092-47-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2092-49-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2092-50-0x0000000064940000-0x0000000064959000-memory.dmp

        memory/2092-53-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2092-54-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2092-48-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2092-37-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2092-34-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2092-30-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-129-0x0000000000400000-0x000000000051E000-memory.dmp

        memory/2092-130-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2092-131-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2092-132-0x000000006EB40000-0x000000006EB63000-memory.dmp

        memory/2092-133-0x0000000064940000-0x0000000064959000-memory.dmp

        memory/2092-134-0x000000006FE40000-0x000000006FFC6000-memory.dmp