Resubmissions

27/11/2024, 13:27

241127-qqdkmsvnhz10

27/11/2024, 09:28

241127-lfrx3atrgr10

Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2024, 09:28

General

  • Target
    09bfd15145c9d8e39f99d3dfe98337a8c488dc334dfe195d27bdeb5b2459fd11.exe
  • Size 765KB
  • Sample241127-lfrx3atrgr
  • SHA256 09bfd15145c9d8e39f99d3dfe98337a8c488dc334dfe195d27bdeb5b2459fd11
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Renames multiple (3024) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\09bfd15145c9d8e39f99d3dfe98337a8c488dc334dfe195d27bdeb5b2459fd11.exe
    "C:\Users\Admin\AppData\Local\Temp\09bfd15145c9d8e39f99d3dfe98337a8c488dc334dfe195d27bdeb5b2459fd11.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1556
    • C:\Users\Admin\AppData\Local\Adobe\Acrobat\11.0\Cache\conhost.exe
      "C:\Users\Admin\AppData\Local\Adobe\Acrobat\11.0\Cache\conhost.exe" C:\Users\Admin\AppData\Local\Temp\09bfd15145c9d8e39f99d3dfe98337a8c488dc334dfe195d27bdeb5b2459fd11.exe
      2⤵
      • Deletes itself
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:2388

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        msvcr100.dll.exe

        • Path C:\Program Files\Java\jdk1.7.0_80\jre\bin\plugin2\msvcr100.dll.exe
        • Size 809KB
        • SHA256 cab706180bc0fa8c74b62fc4b0b1c01da3d3d3ab1b44212774911a050a2ec422
        • MD5 SHA1 SHA512 SSDEEP

        invalid32x32.gif.exe

        • Path C:\Program Files\Java\jdk1.7.0_80\jre\lib\images\cursors\invalid32x32.gif.exe
        • Size 160B
        • SHA256 65d261cda5e626a51ddebc95cef46cc89d70bbc6788eecd30ea6ed9ed57f0c09
        • MD5 SHA1 SHA512

        conhost.exe

        • Path C:\Users\Admin\AppData\Local\Adobe\Acrobat\11.0\Cache\conhost.exe
        • Size 765KB
        • SHA256 09bfd15145c9d8e39f99d3dfe98337a8c488dc334dfe195d27bdeb5b2459fd11
        • MD5 SHA1 SHA512 SSDEEP

        desktop.ini.exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\L7XNHY48\desktop.ini.exe
        • Size 80B
        • SHA256 54e61521e019af817c792629b05f59a8a0bea2dc1c46c479f084b10aaa131c03
        • MD5 SHA1 SHA512

        container.dat.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\DNTException\container.dat.exe
        • Size 16B
        • SHA256 489f323b35b1be9f94e4d81ea799073fbc4fd8a1a6cd4623fc42c2d4d2555e76
        • MD5 SHA1 SHA512

        memory/1556-1-0x0000000000190000-0x0000000000256000-memory.dmp

        memory/1556-0-0x000007FEF5833000-0x000007FEF5834000-memory.dmp

        memory/2388-9-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

        memory/2388-448-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

        memory/2388-447-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

        memory/2388-10-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

        memory/2388-8-0x00000000011D0000-0x0000000001296000-memory.dmp

        memory/2388-3044-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

        memory/2388-3047-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

        memory/2388-3049-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

        memory/2388-3050-0x000007FEF5830000-0x000007FEF621C000-memory.dmp