Analysis

  • max time kernel
    155s
  • max time network
    181s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/04/2024, 00:02

General

  • Target
    setup_installer.exe
  • Size 2.6MB
  • Sample240407-abk36sff23
  • SHA256 8a1ac8fa80452bdf92dccba3b48a37286a3ccb6f2621209c699f5cb734599fa6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nullmixer

C2
  • http://sokiran.xyz/

Extracted

Family
  • vidar

Version
  • 39.7

Botnet
  • 933

C2
  • https://shpak125.tumblr.com/

Attributes
  • profile_id

    933

Extracted

Family
  • smokeloader

Botnet
  • pub5

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.

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 3 IoCs
  • ASPack v2.12-2.42 4 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 9 IoCs
  • Loads dropped DLL 49 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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.

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies registry class 4 IoCs
  • Modifies system certificate store 2 TTPs 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    PID:844
  • 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:2216
    • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2532
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sonia_1.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:556
        • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_1.exe
          sonia_1.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2744
          • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_1.exe
            "C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_1.exe" -a
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            PID:2224
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sonia_2.exe
        3⤵
        • Loads dropped DLL
        PID:672
        • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_2.exe
          sonia_2.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks SCSI registry key(s)
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          PID:1688
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sonia_3.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:464
        • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_3.exe
          sonia_3.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1204
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1204 -s 964
            5⤵
            • Loads dropped DLL
            • Program crash
            PID:1960
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sonia_4.exe
        3⤵
        • Loads dropped DLL
        PID:2524
        • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_4.exe
          sonia_4.exe
          4⤵
          • Executes dropped EXE
          PID:2724
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sonia_5.exe
        3⤵
        • Loads dropped DLL
        PID:2728
        • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_5.exe
          sonia_5.exe
          4⤵
          • Executes dropped EXE
          • Modifies system certificate store
          PID:1488
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sonia_6.exe
        3⤵
        • Loads dropped DLL
        PID:2808
        • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_6.exe
          sonia_6.exe
          4⤵
          • Modifies Windows Defender Real-time Protection settings
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1292
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c sonia_7.exe
        3⤵
        • Loads dropped DLL
        PID:2528
        • C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_7.exe
          sonia_7.exe
          4⤵
          • Executes dropped EXE
          PID:2776
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 412
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2080
  • C:\Windows\system32\rUNdlL32.eXe
    rUNdlL32.eXe "C:\Users\Admin\AppData\Local\Temp\axhub.dll",main
    1⤵
    • Process spawned unexpected child process
    PID:2092
    • C:\Windows\SysWOW64\rundll32.exe
      rUNdlL32.eXe "C:\Users\Admin\AppData\Local\Temp\axhub.dll",main
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2276

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 68KB
        • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
        • MD5 SHA1 SHA512 SSDEEP

        libcurlpp.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\libcurlpp.dll
        • Size 54KB
        • SHA256 43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f
        • MD5 SHA1 SHA512 SSDEEP

        libstdc++-6.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\libstdc++-6.dll
        • Size 647KB
        • SHA256 97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87
        • MD5 SHA1 SHA512 SSDEEP

        libwinpthread-1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\libwinpthread-1.dll
        • Size 69KB
        • SHA256 509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723
        • MD5 SHA1 SHA512 SSDEEP

        sonia_1.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_1.txt
        • Size 712KB
        • SHA256 a5ab29e6fc308d1fe9fd056e960d7ccd474e2d22fb6a799d07086ec715a89d9a
        • MD5 SHA1 SHA512 SSDEEP

        sonia_2.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_2.txt
        • Size 204KB
        • SHA256 95c73f712482226ae243af49cf9fcbb54ce8e5cd1b3d95f1d352fc47834df582
        • MD5 SHA1 SHA512 SSDEEP

        sonia_3.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_3.txt
        • Size 571KB
        • SHA256 ee0156f65ea9aea1570425e9bbf2f2c8b26d0d2043edee2e9e9c8adcca8b3108
        • MD5 SHA1 SHA512 SSDEEP

        sonia_4.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_4.txt
        • Size 8KB
        • SHA256 09178780a1df7364d0b38580b40ccaa528c3f309bbc0239c98e61d464e8a32f7
        • MD5 SHA1 SHA512 SSDEEP

        sonia_5.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_5.txt
        • Size 117KB
        • SHA256 979e083ec4eb19f6e1a15c0fed11a9006a6274b1aa55e525eb77a423aeb042c9
        • MD5 SHA1 SHA512 SSDEEP

        sonia_6.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_6.txt
        • Size 1.0MB
        • SHA256 c74894fe98864ade516c9e54f2258a23ed451feadfa2de53a7c626385b549b22
        • MD5 SHA1 SHA512 SSDEEP

        sonia_7.txt

        • Path C:\Users\Admin\AppData\Local\Temp\7zS8A83D4E6\sonia_7.txt
        • Size 244KB
        • SHA256 76ef9d99c7e37d132f6803ec46f8e2663b1cc282a5d2022946f1598965673fa1
        • MD5 SHA1 SHA512 SSDEEP

        TarF4F1.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\TarF4F1.tmp
        • Size 177KB
        • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
        • MD5 SHA1 SHA512 SSDEEP

        axhub.dat

        • Path C:\Users\Admin\AppData\Local\Temp\axhub.dat
        • Size 552KB
        • SHA256 586339f93c9c0eed8a42829ab307f2c5381a636edbcf80df3770c27555034380
        • MD5 SHA1 SHA512 SSDEEP

        axhub.dll

        • Path C:\Users\Admin\AppData\Local\Temp\axhub.dll
        • Size 73KB
        • SHA256 8206b4b3897ca45b9e083273f616902966e57091516844906e6ae2aefe63cef1
        • MD5 SHA1 SHA512 SSDEEP

        libcurl.dll

        • Path \Users\Admin\AppData\Local\Temp\7zS8A83D4E6\libcurl.dll
        • Size 218KB
        • SHA256 0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e
        • MD5 SHA1 SHA512 SSDEEP

        libgcc_s_dw2-1.dll

        • Path \Users\Admin\AppData\Local\Temp\7zS8A83D4E6\libgcc_s_dw2-1.dll
        • Size 113KB
        • SHA256 59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e
        • MD5 SHA1 SHA512 SSDEEP

        setup_install.exe

        • Path \Users\Admin\AppData\Local\Temp\7zS8A83D4E6\setup_install.exe
        • Size 290KB
        • SHA256 beb34b80c90025587cf08d99d4a58a5160f6ffe7f6b8b81b0e91ebbdc65d9669
        • MD5 SHA1 SHA512 SSDEEP

        CC4F.tmp

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

        memory/844-141-0x0000000000F60000-0x0000000000FD1000-memory.dmp

        memory/844-140-0x0000000000AE0000-0x0000000000B2C000-memory.dmp

        memory/844-143-0x0000000000AE0000-0x0000000000B2C000-memory.dmp

        memory/1204-122-0x00000000002C0000-0x00000000003C0000-memory.dmp

        memory/1204-123-0x0000000000970000-0x0000000000A0D000-memory.dmp

        memory/1204-124-0x0000000000400000-0x00000000008F9000-memory.dmp

        memory/1204-441-0x0000000000400000-0x00000000008F9000-memory.dmp

        memory/1204-459-0x00000000002C0000-0x00000000003C0000-memory.dmp

        memory/1368-259-0x0000000003920000-0x0000000003935000-memory.dmp

        memory/1488-121-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

        memory/1488-223-0x000000001AF90000-0x000000001B010000-memory.dmp

        memory/1488-156-0x0000000000240000-0x000000000025E000-memory.dmp

        memory/1488-120-0x00000000010B0000-0x00000000010D6000-memory.dmp

        memory/1488-451-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

        memory/1688-260-0x0000000000400000-0x000000000089D000-memory.dmp

        memory/1688-126-0x0000000000990000-0x0000000000A90000-memory.dmp

        memory/1688-129-0x0000000000400000-0x000000000089D000-memory.dmp

        memory/1688-127-0x0000000000240000-0x0000000000249000-memory.dmp

        memory/2216-37-0x0000000002760000-0x000000000287D000-memory.dmp

        memory/2216-30-0x0000000002760000-0x000000000287D000-memory.dmp

        memory/2276-475-0x0000000000300000-0x000000000035D000-memory.dmp

        memory/2276-139-0x0000000000300000-0x000000000035D000-memory.dmp

        memory/2276-138-0x0000000001DB0000-0x0000000001EB1000-memory.dmp

        memory/2532-73-0x0000000000400000-0x000000000051D000-memory.dmp

        memory/2532-220-0x0000000064940000-0x0000000064959000-memory.dmp

        memory/2532-72-0x0000000000400000-0x000000000051D000-memory.dmp

        memory/2532-55-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2532-69-0x0000000000400000-0x000000000051D000-memory.dmp

        memory/2532-67-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2532-65-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2532-74-0x0000000000400000-0x000000000051D000-memory.dmp

        memory/2532-75-0x0000000000400000-0x000000000051D000-memory.dmp

        memory/2532-64-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2532-61-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2532-142-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2532-59-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2532-56-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2532-57-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2532-58-0x0000000064940000-0x0000000064959000-memory.dmp

        memory/2532-71-0x0000000000400000-0x000000000051D000-memory.dmp

        memory/2532-60-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2532-47-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2532-42-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2532-68-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2532-436-0x000000006B280000-0x000000006B2A6000-memory.dmp

        memory/2532-435-0x0000000000400000-0x000000000051D000-memory.dmp

        memory/2532-437-0x000000006B440000-0x000000006B4CF000-memory.dmp

        memory/2532-438-0x000000006EB40000-0x000000006EB63000-memory.dmp

        memory/2532-440-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2532-63-0x000000006FE40000-0x000000006FFC6000-memory.dmp

        memory/2724-225-0x000000001B3E0000-0x000000001B460000-memory.dmp

        memory/2724-125-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

        memory/2724-460-0x000007FEF5C90000-0x000007FEF667C000-memory.dmp

        memory/2724-119-0x0000000001390000-0x0000000001398000-memory.dmp

        memory/2724-476-0x000000001B3E0000-0x000000001B460000-memory.dmp