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Analysis

  • max time kernel
    65s
  • max time network
    70s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    17/04/2023, 08:01

General

  • Target

    image001.gz

  • Size

    4KB

  • MD5

    e7ec5eab039e0482906db65773b4206b

  • SHA1

    0bb672abd4bf19c9040d2f596b8d99ac09caf843

  • SHA256

    c094983226741f872596b3221643cc0c2ea1de96253eca5cd49b32df52df3f46

  • SHA512

    a5a9323eb33c7a25d9be7ea0c1bf61213c9adeab16aaec883bcb4eeec3ce21b80c370767d5dae57e38d6864926f2c5023af2e8e69b3a1883922a23bd7e347361

  • SSDEEP

    96:ZyIym0J4yUPyJdjRJAaXJx409diOzo31uHEKDcimb4ct947LF8rjl:sIyhM6JzGaXJnDo905Ux

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 24 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). Likely ransomware behaviour.

  • Modifies registry class 64 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\image001.gz
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\image001.gz
      2⤵
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1760
      • 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\image001.gz"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1752
        • 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\image001.gz"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:616
          • C:\Windows\SysWOW64\unregmp2.exe
            C:\Windows\system32\unregmp2.exe /ShowWMP /SetShowState /CreateMediaLibrary
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1620
            • 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:1600
          • C:\Windows\SysWOW64\unregmp2.exe
            "C:\Windows\system32\unregmp2.exe" /PerformIndivIfNeeded
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1124
            • C:\Windows\system32\unregmp2.exe
              "C:\Windows\SysNative\unregmp2.exe" /PerformIndivIfNeeded /REENTRANT
              6⤵
                PID:1908
            • 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\image001.gz"
              5⤵
              • Enumerates connected drives
              • Suspicious use of FindShellTrayWindow
              PID:1884

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Media Player\CurrentDatabase_372.wmdb

      Filesize

      1.0MB

      MD5

      390ed0b29a49775e03beed33dada63ca

      SHA1

      5d4329bb572aad20f6650cf33bbd9fb5e163d8e4

      SHA256

      906baaf88484e799c11dadff504dbf4e1306d36cd155fda88dfcd695b78b7f9f

      SHA512

      8fdaaaa7b61f09c87d2c2689034b935d993a6d75d29b0667c717166643969901aeb2b1430a1016cb9c5ff1dadd86a54287eabf684ce4a184de1bb84f65852c6c

    • C:\Users\Admin\AppData\Local\Temp\wmsetup.log

      Filesize

      2KB

      MD5

      659fbcdda2aea2cf064e8f7629430558

      SHA1

      fbb967eef2799ef21240366916638f158d6e5ead

      SHA256

      24fa9a1d97dc3681300f60d1d2522c93a8e3317ede4daa376d4c289542ba8f60

      SHA512

      486414de90c8aeb059e41517c0db74c290dbe5f4d10884f8e592a1442984d0860540d733d4795df8acb1fcd31f5c5d773de4e25f4296552b228e2be94a28e768

    • C:\Users\Admin\AppData\Local\Temp\wmsetup.log

      Filesize

      2KB

      MD5

      afa4d33b38a6082ca50ac6033fda31f0

      SHA1

      d4d9f1f100b13ce736243cab577241ea53fb39cc

      SHA256

      25887d60153a3f0844289e481c18bf9afa780f442a13aa252c21ef974f6a6cbf

      SHA512

      98403218cf88562b29c15b0ff84e2f9576c3b68b049d22d808475bcbe58f8ea7af0859db9f52e391057c6b603b6d25ab9eb0f812ef394d4c10002b052f0d6706

    • memory/1884-94-0x0000000000100000-0x0000000000101000-memory.dmp

      Filesize

      4KB

    • memory/1884-98-0x00000000036B0000-0x00000000036BA000-memory.dmp

      Filesize

      40KB

    • memory/1884-99-0x00000000036B0000-0x00000000036BA000-memory.dmp

      Filesize

      40KB