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Analysis

  • max time kernel
    35s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 16:44

General

  • Target

    dfd8bb785c53a7b2d3cddf680dbb1388d6089450a65ca8e9b7f5f5168ec028e1.exe

  • Size

    98KB

  • MD5

    25b3f992c2ab8e8b12e8684dcd00e5e0

  • SHA1

    c05df6faa70f9311f5ff39ed3f117cbba4c1e9e3

  • SHA256

    dfd8bb785c53a7b2d3cddf680dbb1388d6089450a65ca8e9b7f5f5168ec028e1

  • SHA512

    6adf828c448297d68e0842ad74f36674ab0d2fa1dd5a2a1d35cfc7a9078868e71d1f250be220abc88f7c73675b9218f8e4b845ed5bc42942ba6dc69213243897

  • SSDEEP

    1536:MMMamqCubWRVoIHQ9SMxevLrs9zq/+gMYq0rkIdHx9mB8HxWZozbY6BJymq7vUq:IQbWwIHEgv0QpMTIlXWZozbYPmeqV

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • UPX packed file 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dfd8bb785c53a7b2d3cddf680dbb1388d6089450a65ca8e9b7f5f5168ec028e1.exe
    "C:\Users\Admin\AppData\Local\Temp\dfd8bb785c53a7b2d3cddf680dbb1388d6089450a65ca8e9b7f5f5168ec028e1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1192
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c cmd /c move /y "C:\USERS\ADMIN\APPDATA\LOCAL\TEMP\dfd8bb785c53a7b2d3cddf680dbb1388d6089450a65ca8e9b7f5f5168ec028e1.exe" "C:\Users\Admin\AppData\lsass.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:964
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c move /y "C:\USERS\ADMIN\APPDATA\LOCAL\TEMP\dfd8bb785c53a7b2d3cddf680dbb1388d6089450a65ca8e9b7f5f5168ec028e1.exe" "C:\Users\Admin\AppData\lsass.exe"
        3⤵
        • Suspicious behavior: RenamesItself
        PID:1616
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c cmd /c reg add "hkey_local_machine\software\microsoft\windows nt\currentversion\winlogon" /v userinit /t reg_sz /d "C:\WINDOWS\system32\userinit.exe,C:\Users\Admin\AppData\lsass.exe" /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c reg add "hkey_local_machine\software\microsoft\windows nt\currentversion\winlogon" /v userinit /t reg_sz /d "C:\WINDOWS\system32\userinit.exe,C:\Users\Admin\AppData\lsass.exe" /f
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:984
        • C:\Windows\SysWOW64\reg.exe
          reg add "hkey_local_machine\software\microsoft\windows nt\currentversion\winlogon" /v userinit /t reg_sz /d "C:\WINDOWS\system32\userinit.exe,C:\Users\Admin\AppData\lsass.exe" /f
          4⤵
          • Modifies WinLogon for persistence
          PID:1932
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c cmd /c attrib +h "C:\Users\Admin\AppData\lsass.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1704
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c attrib +h "C:\Users\Admin\AppData\lsass.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1872
        • C:\Windows\SysWOW64\attrib.exe
          attrib +h "C:\Users\Admin\AppData\lsass.exe"
          4⤵
          • Views/modifies file attributes
          PID:1840
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c cmd /c attrib +h "C:\Users\Admin\AppData"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1344
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c attrib +h "C:\Users\Admin\AppData"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:664
        • C:\Windows\SysWOW64\attrib.exe
          attrib +h "C:\Users\Admin\AppData"
          4⤵
          • Views/modifies file attributes
          PID:1524

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1192-55-0x0000000000400000-0x0000000000431000-memory.dmp

    Filesize

    196KB

  • memory/1192-58-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/1192-54-0x0000000076701000-0x0000000076703000-memory.dmp

    Filesize

    8KB

  • memory/1192-65-0x0000000000400000-0x0000000000431000-memory.dmp

    Filesize

    196KB

  • memory/1192-57-0x0000000000400000-0x0000000000431000-memory.dmp

    Filesize

    196KB