Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-01-2025 10:29

General

  • Target

    2025-01-09_ccb9978edf3b36a12999895f72400491_bkransomware_ramnit.exe

  • Size

    4.2MB

  • MD5

    ccb9978edf3b36a12999895f72400491

  • SHA1

    15b5371c6908a845bf7a20ae3b29821892e9bf49

  • SHA256

    fa4fd395f37da0940f08d5966ba6e3af1c570985d91f6cd93018a04452d9fdc8

  • SHA512

    90b746fcb2b06e2fa0c48a76713d17ce98379153883997294d96a2d36c484614ca0329d89836ea9dc54154e34ede3a8f81c0fd7493c814e15795109769ed0878

  • SSDEEP

    98304:LBBIoHkSDVaAYwohLvhTyYfECLacrR4LVos4KBNfzmh19mvgX6JcdCkoLcvTPruS:hHkSubTNac94LVos4KBNfzmh19mvgX6D

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Ramnit family
  • Executes dropped EXE 2 IoCs
  • UPX packed file 5 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 30 IoCs
  • Modifies registry class 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-01-09_ccb9978edf3b36a12999895f72400491_bkransomware_ramnit.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-09_ccb9978edf3b36a12999895f72400491_bkransomware_ramnit.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2176
    • C:\Users\Admin\AppData\Local\Temp\2025-01-09_ccb9978edf3b36a12999895f72400491_bkransomware_ramnitSrv.exe
      C:\Users\Admin\AppData\Local\Temp\2025-01-09_ccb9978edf3b36a12999895f72400491_bkransomware_ramnitSrv.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2640
      • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
        "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:5108
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4576
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4576 CREDAT:17410 /prefetch:2
            5⤵
            • System Location Discovery: System Language Discovery
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:2040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

    Filesize

    471B

    MD5

    9ff670ce735bcb3f1852fb17230eb4d1

    SHA1

    343b84e90eba5ba52ffde84efffc722d9aaef34c

    SHA256

    d5171888f2cf311802c4e02bcc7be88f684075e84d0665f44b823e6b6a5ead5f

    SHA512

    73e4531ae7a0273390be09ea835d4970b4e5053988f9bf48e55afabcf184aae29d267f31d43250c1d5baa721a23c51a0dd1c46d4acf3a747abc575b6f23bc120

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

    Filesize

    404B

    MD5

    ad106c3ab681a9bb51bfc9d1845f1d4b

    SHA1

    ecdf530a83ead8c79f4ab4248386b47e25185dae

    SHA256

    8a51b4ea40ebc37e75e0af0416315d94b30112bd9a2fde4edf4f4d124ddad3fc

    SHA512

    a76ea575a9a21fe7e54bb4f6d59d50f17ffeb82ffc252c7e4cd17275f9c8b91640c35cbf427d1a8e79d5a5f3ee0b50d03a8736da43167ef7bdd6f8a300c0a4e3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\P2UT3MS5\suggestions[1].en-US

    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

  • C:\Users\Admin\AppData\Local\Temp\2025-01-09_ccb9978edf3b36a12999895f72400491_bkransomware_ramnitSrv.exe

    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • memory/2176-17-0x0000000000520000-0x000000000096F000-memory.dmp

    Filesize

    4.3MB

  • memory/2176-43-0x00000000700D0000-0x0000000070109000-memory.dmp

    Filesize

    228KB

  • memory/2176-0-0x0000000000520000-0x000000000096F000-memory.dmp

    Filesize

    4.3MB

  • memory/2176-18-0x00000000700D0000-0x0000000070109000-memory.dmp

    Filesize

    228KB

  • memory/2640-6-0x0000000000550000-0x000000000055F000-memory.dmp

    Filesize

    60KB

  • memory/2640-4-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2640-7-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/5108-12-0x0000000001F10000-0x0000000001F11000-memory.dmp

    Filesize

    4KB

  • memory/5108-15-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/5108-13-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB