Analysis

  • max time kernel
    118s
  • max time network
    160s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    11-05-2021 12:48

General

  • Target

    7a9db98e3ce855d605078de19c1028f1ed8e3aef072baeeb7a076bd8c71cbefa.dll

  • Size

    682KB

  • MD5

    e50b2527ab2b0d169ef6b282d9f0e85f

  • SHA1

    fd9114624dbc720b1c8bd4e7165b6babf09a64f6

  • SHA256

    7a9db98e3ce855d605078de19c1028f1ed8e3aef072baeeb7a076bd8c71cbefa

  • SHA512

    e7288e3fc5f287cfbf98318606e520033d279f1dea4e42e388a6c34d60c3f368fcd8e0a461c4b11ba97d14f1fef31cfd907f305f6017f807a94eee525f5ddd15

Malware Config

Signatures

  • Ramnit

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

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

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

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a9db98e3ce855d605078de19c1028f1ed8e3aef072baeeb7a076bd8c71cbefa.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:852
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a9db98e3ce855d605078de19c1028f1ed8e3aef072baeeb7a076bd8c71cbefa.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1532
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:3760
        • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
          "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3276
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2704
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2704 CREDAT:82945 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:184
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 648
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:584

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Microsoft\DesktopLayer.exe

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Program Files (x86)\Microsoft\DesktopLayer.exe

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

    MD5

    06165dea77d5d10217992bd74f065006

    SHA1

    964d97611d8050aaf7d8a3a5e641cd20df6afd92

    SHA256

    9b125647f3ede14fa37214fe956f3b906f8bf58510bdc1eecfdf2ca4c827fe8f

    SHA512

    e126e1fdd45d2b08c37724b568a1ee9eef95895f2c31f5626186032293eb7f2a62f907fea96f1f0fca4c7de3cd9bac45df28bb69d42b2cd7ea5468e1aefdfee2

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

    MD5

    8dfeaed4a874790dec3c4bdeb6d152f9

    SHA1

    24259fe3b6c6abdb71f41004f439eacf5a297d33

    SHA256

    44b2553bd27b387db347dc6afddf4b71fbf9154f77eda663c20947ec27173116

    SHA512

    8163ef556af2674388994ddfd2d4aa6e64e89db5bcfc1fb46cb6efddab8fcdbac2f6064d05acb40acf1cbe30a3f728a0213bf04f00f6cac27aa1440cfa70358f

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\5IKUKB89.cookie

    MD5

    9008c1f120791f9d2d93e11e3721378c

    SHA1

    b74c98177f9bebf1f3d19f87cb9c70c4d9883155

    SHA256

    09c52ffb738c2cf5751f4c53d86352789d9791845b42e880f7d454f4a1525016

    SHA512

    6f962a2c7b069e634e9f9711d6471df2688274d1eaf4c9b7ca2c282cd30401b437049835d9d92a6fea5fe86f0e1a0d8de88cc261c341c4495679d57bfdacf50b

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\DDW2HAU7.cookie

    MD5

    a5a6cbced514f1da589f71cbe672d3c5

    SHA1

    cea4cd6da8d0a91e53f0418df2a62b848ca29de3

    SHA256

    a042e701ef95a6db518022d20ab13776c3f660c763cf60cc613d46873499fb6e

    SHA512

    c8fc84bc7fb2065d4e63b7be48ebffdd5c8d1a369f9c7e55f8804d857ad1d890ff25c0f6d5dbd647ea4b8f3d404105d67c8d8e5cd783f4a079b5fde4031c0a21

  • C:\Windows\SysWOW64\rundll32Srv.exe

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • C:\Windows\SysWOW64\rundll32Srv.exe

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • memory/184-128-0x0000000000000000-mapping.dmp

  • memory/1532-114-0x0000000000000000-mapping.dmp

  • memory/2704-122-0x0000000000000000-mapping.dmp

  • memory/2704-127-0x00007FFD4DDC0000-0x00007FFD4DE2B000-memory.dmp

    Filesize

    428KB

  • memory/3276-121-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB

  • memory/3276-118-0x0000000000000000-mapping.dmp

  • memory/3760-123-0x00000000001E0000-0x00000000001EF000-memory.dmp

    Filesize

    60KB

  • memory/3760-124-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3760-115-0x0000000000000000-mapping.dmp