Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    11/05/2023, 12:32

General

  • Target
    Solostemmes249.exe
  • Size 291KB
  • Sample230511-pqletafb41
  • SHA256 c8edfb818e8a68ef4c127122bf9ae430d6d43ece8c9e70627cccb44e486f2827
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Solostemmes249.exe
    "C:\Users\Admin\AppData\Local\Temp\Solostemmes249.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Users\Admin\AppData\Local\Temp\Solostemmes249.exe
      "C:\Users\Admin\AppData\Local\Temp\Solostemmes249.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:1904

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 62KB
        • SHA256 d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904
        • MD5 SHA1 SHA512 SSDEEP

        TarF1A7.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\TarF1A7.tmp
        • Size 164KB
        • SHA256 c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6
        • MD5 SHA1 SHA512 SSDEEP

        System.dll

        • Path \Users\Admin\AppData\Local\Temp\nsy34D.tmp\System.dll
        • Size 11KB
        • SHA256 a1390a78533c47e55cc364e97af431117126d04a7faed49390210ea3e89dd0e1
        • MD5 SHA1 SHA512 SSDEEP

        memory/1904-84-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1904-85-0x0000000000400000-0x0000000001462000-memory.dmp

        memory/1904-86-0x0000000000400000-0x0000000001462000-memory.dmp