Analysis

  • max time kernel
    152s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/07/2024, 22:51

General

  • Target
    CB_setup.exe
  • Size 21.4MB
  • Sample240728-2s976stenb
  • SHA256 ae1c457e4968758551c0e99ce62cb87c02b6c134afda6d1d700da3b37a2d7610
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Strela Stealer payload 2 IoCs
  • Strela stealer

    An info stealer targeting mail credentials first seen in late 2022.

  • Loads dropped DLL 14 IoCs
  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of SetWindowsHookEx 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CB_setup.exe
    "C:\Users\Admin\AppData\Local\Temp\CB_setup.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:852

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        Banner.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD0BF.tmp\Banner.dll
        • Size 3KB
        • SHA256 045bd54299e1cf2d9e68f64e233f30c8a2c455d72645d4a4a9ca8874a7c510ac
        • MD5 SHA1 SHA512

        MyLangDLLS3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD0BF.tmp\MyLangDLLS3.dll
        • Size 5KB
        • SHA256 dfca83b19ee2fe36479e9c1ceef2eb45b08851236dcf7a958141b1af03d27a21
        • MD5 SHA1 SHA512 SSDEEP

        NSIS_SkinCrafter_Plugin.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD0BF.tmp\NSIS_SkinCrafter_Plugin.dll
        • Size 5.8MB
        • SHA256 ea1552de423ed1768bace344d9a07bf529845c75fe6fc6ce3c4ba91d4aae5409
        • MD5 SHA1 SHA512 SSDEEP

        Plugin.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD0BF.tmp\Plugin.dll
        • Size 2.1MB
        • SHA256 ea847b3e559321f8825d4339ad503b8082546ad7f9ae1d8373914f2ffaf3e6a2
        • MD5 SHA1 SHA512 SSDEEP

        SkinCrafter.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD0BF.tmp\SkinCrafter.dll
        • Size 792KB
        • SHA256 546dddc7a31609b5bc3dc8ecef6f6782b77613853c54171fc32314c08a69e8de
        • MD5 SHA1 SHA512 SSDEEP

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD0BF.tmp\System.dll
        • Size 11KB
        • SHA256 03cd57ab00236c753e7ddeee8ee1c10839ace7c426769982365531042e1f6f8b
        • MD5 SHA1 SHA512 SSDEEP

        UserInfo.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD0BF.tmp\UserInfo.dll
        • Size 4KB
        • SHA256 728472ba312ae8af7f30d758ab473e0772477a68fcd1d2d547dafe6d8800d531
        • MD5 SHA1 SHA512

        version_free.ini

        • Path C:\Users\Admin\AppData\Local\Temp\version_free.ini
        • Size 15KB
        • SHA256 69efb45ca18fe1c109e6a24ff4f8c5e0a17ff8b5e196710046bdd0d4917e25f0
        • MD5 SHA1 SHA512 SSDEEP

        mfc71.dll

        • Path C:\Windows\SysWOW64\mfc71.dll
        • Size 1.0MB
        • SHA256 385ea2a454172e3f9b1b18778d4d29318a12be9f0c0c0602db72e2cce136e823
        • MD5 SHA1 SHA512 SSDEEP

        msvcr71.dll

        • Path C:\Windows\SysWOW64\msvcr71.dll
        • Size 340KB
        • SHA256 c4d4339df314a27ff75a38967b7569d9962337b8d4cd4b0db3aba5ff72b2bfbb
        • MD5 SHA1 SHA512 SSDEEP

        memory/852-47-0x0000000005B40000-0x000000000610D000-memory.dmp

        memory/852-57-0x0000000006110000-0x00000000061DC000-memory.dmp