Analysis

  • max time kernel
    146s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    16/01/2024, 10:41

General

  • Target

    5fb1da1d27e51c036e788d171e641819.exe

  • Size

    49KB

  • MD5

    5fb1da1d27e51c036e788d171e641819

  • SHA1

    a2250f189da33775857e5c78a88a9f4e2b30f8e0

  • SHA256

    00b99ea9c4a00742c356b29dee039c17891eb9cef040aec7842b7c38899622b6

  • SHA512

    c264528584cf841c2a6088875b34863c5a76b035b6a22ac74fa744141afe22ddadf218ede7f579394a3192113c57a4ca4923df584023c41dbc2193a977bb6845

  • SSDEEP

    768:3i5bXB5eA37KrHaqEgd0l9Ad11TYp9OeejptTLhSRlrlBI:S5d5eM7K7hEh83S/rue

Malware Config

Extracted

Family

metasploit

Version

encoder/fnstenv_mov

Signatures

  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 11 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe
    "C:\Users\Admin\AppData\Local\Temp\5fb1da1d27e51c036e788d171e641819.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1236
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\5FB1DA~1.EXE" >> NUL
      2⤵
      • Deletes itself
      PID:2768
  • C:\Windows\SysWOW64\msdlli.exe
    C:\Windows\SysWOW64\msdlli.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2380

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Windows\SysWOW64\msdlli.exe

          Filesize

          19KB

          MD5

          0473ede26a21f7bb1af7210bcd5729df

          SHA1

          9f6b1aa5ef4bcc38e9859bb36b12611b070714ed

          SHA256

          a2384c6cd6c67fbc429d29af3a3892b7318e9adf925e5e9af7f3b9afdfcf3f7a

          SHA512

          2d3d4c4cb1b6e4494fdd17951c3e9e24bd1db85533eef2a3f5ac1a3818de00c9d7cd3ee58020b67627192655ce24a797e6de73fc83dbbe623b637024a394ec5c

        • memory/1236-0-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/1236-5-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/2380-4-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/2380-9-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/2380-11-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/2380-15-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/2380-17-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/2380-19-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB

        • memory/2380-22-0x0000000000400000-0x0000000000422000-memory.dmp

          Filesize

          136KB