Resubmissions

02/03/2024, 14:16

240302-rllwwsee273

02/03/2024, 14:14

240302-rkgwjseb5w3

02/03/2024, 14:07

240302-reyxwaed683

02/03/2024, 14:02

240302-rb72daed358

Analysis

  • max time kernel
    32s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2024, 14:02

General

  • Target
    undertale.sf2
  • Size 147.0MB
  • Sample240302-rb72daed35
  • SHA256 5fadec9f010a5d113a77bf679677dc607588588405ece51a5aae9103f29f59be
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Modifies Installed Components in the registry 2 TTPs 5 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\undertale.sf2
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2624
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\undertale.sf2
      2⤵
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of WriteProcessMemory
      PID:1056
      • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
        "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play "C:\Users\Admin\AppData\Local\Temp\undertale.sf2"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1216
        • C:\Program Files (x86)\Windows Media Player\setup_wm.exe
          "C:\Program Files (x86)\Windows Media Player\setup_wm.exe" /RunOnce:"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play "C:\Users\Admin\AppData\Local\Temp\undertale.sf2"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:756
          • C:\Windows\SysWOW64\unregmp2.exe
            C:\Windows\system32\unregmp2.exe /ShowWMP /SetShowState /CreateMediaLibrary
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1748
            • C:\Windows\system32\unregmp2.exe
              "C:\Windows\SysNative\unregmp2.exe" /ShowWMP /SetShowState /CreateMediaLibrary /REENTRANT
              6⤵
              • Modifies Installed Components in the registry
              • Drops desktop.ini file(s)
              • Drops file in Program Files directory
              • Modifies registry class
              PID:2684
          • C:\Windows\SysWOW64\unregmp2.exe
            "C:\Windows\system32\unregmp2.exe" /PerformIndivIfNeeded
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2728
            • C:\Windows\system32\unregmp2.exe
              "C:\Windows\SysNative\unregmp2.exe" /PerformIndivIfNeeded /REENTRANT
              6⤵
                PID:1716
            • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
              "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Relaunch /Play "C:\Users\Admin\AppData\Local\Temp\undertale.sf2"
              5⤵
              • Enumerates connected drives
              • Suspicious use of FindShellTrayWindow
              PID:1596

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          CurrentDatabase_372.wmdb

          • Path C:\Users\Admin\AppData\Local\Microsoft\Media Player\CurrentDatabase_372.wmdb
          • Size 1.0MB
          • SHA256 a116a3620421498fd5ad3a29ce4500cb13eff841ee9ab3e8629545afd417944e
          • MD5 SHA1 SHA512 SSDEEP

          allservices.xml

          • Path C:\Users\Admin\AppData\Local\Temp\tmp48694.WMC\allservices.xml
          • Size 546B
          • SHA256 155b9c588061c71832af329fafa5678835d9153b8fbb7592195ae953d0c455ba
          • MD5 SHA1 SHA512

          serviceinfo.xml

          • Path C:\Users\Admin\AppData\Local\Temp\tmp50676.WMC\serviceinfo.xml
          • Size 523B
          • SHA256 93acdb79543d9248ca3fca661f3ac287e6004e4b3dafd79d4c4070794ffbf2ad
          • MD5 SHA1 SHA512

          wmsetup.log

          • Path C:\Users\Admin\AppData\Local\Temp\wmsetup.log
          • Size 3KB
          • SHA256 c45e9338c9cc720df88850640b87fb0eee1f0a347161d8f2300db509e15e234e
          • MD5 SHA1 SHA512

          wmsetup.log

          • Path C:\Users\Admin\AppData\Local\Temp\wmsetup.log
          • Size 4KB
          • SHA256 e2f6a0205d32d6ac04ed77bc33e393294bf70a3826e73b6f8367bb274e5076f8
          • MD5 SHA1 SHA512 SSDEEP

          memory/1596-42-0x0000000000100000-0x0000000000101000-memory.dmp

          memory/1596-63-0x0000000004140000-0x000000000414A000-memory.dmp

          memory/1596-74-0x0000000073B40000-0x0000000073C31000-memory.dmp

          memory/1596-67-0x0000000073B40000-0x0000000073C31000-memory.dmp

          memory/1596-61-0x0000000004140000-0x000000000414A000-memory.dmp

          memory/1596-62-0x0000000004140000-0x000000000414A000-memory.dmp

          memory/1596-65-0x0000000004140000-0x000000000414A000-memory.dmp

          memory/1596-64-0x0000000004140000-0x000000000414A000-memory.dmp

          memory/1596-66-0x0000000004140000-0x000000000414A000-memory.dmp

          memory/1716-49-0x000007FEF5A90000-0x000007FEF5B61000-memory.dmp

          memory/1716-58-0x000007FEF5B70000-0x000007FEF5C32000-memory.dmp

          memory/1716-59-0x000007FEF5A90000-0x000007FEF5B61000-memory.dmp

          memory/1716-60-0x000007FEF6CE0000-0x000007FEF6E08000-memory.dmp

          memory/1716-48-0x000007FEF6CE0000-0x000007FEF6E08000-memory.dmp

          memory/1716-38-0x000007FEF5B70000-0x000007FEF5C32000-memory.dmp