Overview

overview

10

Static

static

jigsaw.exe

windows10-1703-x64

10

Resubmissions

09-10-2023 22:48

231009-2rgt8sah98 10

28-12-2022 03:31

221228-d285gacd4w 10

Analysis

  • max time kernel
    157s
  • max time network
    160s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-es
  • resource tags

    arch:x64arch:x86image:win10-20220812-eslocale:es-esos:windows10-1703-x64systemwindows
  • submitted
    28-12-2022 03:31

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General

  • Target

    jigsaw.exe

  • Size

    283KB

  • MD5

    2773e3dc59472296cb0024ba7715a64e

  • SHA1

    27d99fbca067f478bb91cdbcb92f13a828b00859

  • SHA256

    3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

  • SHA512

    6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

  • SSDEEP

    6144:7fukPLPvucHiQQQ4uuy9ApZbZWxcZt+kTfMLJTOAZiYSXjjeqXus:7fu5cCT7yYlWi8kTfMLJTOAZiYSXjyqX

Score
10/10
jigsawpersistenceransomware

Malware Config

Signatures

  • Jigsaw Ransomware

    Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

    ransomwarejigsaw
  • Executes dropped EXE 1 IoCs
  • Modifies extensions of user files 7 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 5 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 29 IoCs
    adwarespyware
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
    "C:\Users\Admin\AppData\Local\Temp\jigsaw.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2576
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\jigsaw.exe
      2⤵
      • Executes dropped EXE
      • Modifies extensions of user files
      • Drops file in Program Files directory
      PID:2628
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1068
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\WatchUpdate.xsl
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4692 CREDAT:82945 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:3812
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4760
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe"
        2⤵
        • Checks processor information in registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4812
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4812.0.2089460018\992659708" -parentBuildID 20200403170909 -prefsHandle 1356 -prefMapHandle 1348 -prefsLen 1 -prefMapSize 220115 -appdir "C:\Program Files\Mozilla Firefox\browser" - 4812 "\\.\pipe\gecko-crash-server-pipe.4812" 1604 gpu
          3⤵
            PID:4124
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4812.3.1391828529\852641145" -childID 1 -isForBrowser -prefsHandle 3212 -prefMapHandle 3208 -prefsLen 156 -prefMapSize 220115 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 4812 "\\.\pipe\gecko-crash-server-pipe.4812" 3112 tab
            3⤵
              PID:3300
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4812.13.1877407806\402470490" -childID 2 -isForBrowser -prefsHandle 3800 -prefMapHandle 3796 -prefsLen 6938 -prefMapSize 220115 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 4812 "\\.\pipe\gecko-crash-server-pipe.4812" 3808 tab
              3⤵
                PID:1832

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
            Filesize

            283KB

            MD5

            2773e3dc59472296cb0024ba7715a64e

            SHA1

            27d99fbca067f478bb91cdbcb92f13a828b00859

            SHA256

            3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

            SHA512

            6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

            Download Submit

          • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
            Filesize

            283KB

            MD5

            2773e3dc59472296cb0024ba7715a64e

            SHA1

            27d99fbca067f478bb91cdbcb92f13a828b00859

            SHA256

            3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7

            SHA512

            6ef530b209f8ec459cca66dbf2c31ec96c5f7d609f17fa3b877d276968032fbc6132ea4a45ed1450fb6c5d730a7c9349bf4481e28befaea6b119ec0ded842262

            Download Submit

          • memory/2576-118-0x00007FF940290000-0x00007FF940CC3000-memory.dmp

            Filesize

            10.2MB

            Download

          • memory/2628-122-0x00007FF940290000-0x00007FF940CC3000-memory.dmp

            Filesize

            10.2MB

            Download