Analysis

  • max time kernel
    23s
  • max time network
    24s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-11-2024 01:57

General

  • Target

    8f1fc87e97923cc9f810b0893e2742c277992b6ca29f9a79e66c8f3938de5955N.exe

  • Size

    1.5MB

  • MD5

    8f7fa3b34b52d77c923711a5b6510df0

  • SHA1

    171914ec44b3bb7062f5b21bf5f628c9c1aa2b48

  • SHA256

    8f1fc87e97923cc9f810b0893e2742c277992b6ca29f9a79e66c8f3938de5955

  • SHA512

    68d82717828e8ed1598e8599c39b0898bd7f4a11fadf232e5cc58ffd21028fa61ac351f0dc9135ecbe7a42758ec301a73ac4c06c3c3678c7ecb0d2837a756d63

  • SSDEEP

    24576:0eaMajUi+6C+mDjn7gbkFaSH7Wu4mIWGE1Sy/fBEXTHhaTEEER71RM4I13:0eaj9bHmMbkBHVdGE1Sy/ujhaIh+1

Score
10/10

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Dcrat family
  • Process spawned unexpected child process 36 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 4 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 25 IoCs
  • Drops file in Windows directory 15 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 36 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f1fc87e97923cc9f810b0893e2742c277992b6ca29f9a79e66c8f3938de5955N.exe
    "C:\Users\Admin\AppData\Local\Temp\8f1fc87e97923cc9f810b0893e2742c277992b6ca29f9a79e66c8f3938de5955N.exe"
    1⤵
    • Drops file in Drivers directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2508
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\rSnsL5gcFm.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2308
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:2820
        • C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\wininit.exe
          "C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\wininit.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1660
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2852
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2848
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2748
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2068
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2712
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2864
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Windows\ModemLogs\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2768
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\ModemLogs\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2356
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Windows\ModemLogs\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2616
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 14 /tr "'C:\Program Files\7-Zip\Lang\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1924
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2648
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 6 /tr "'C:\Program Files\7-Zip\Lang\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2600
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Defender\en-US\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1696
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\en-US\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:620
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Defender\en-US\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1744
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Windows\Cursors\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2360
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows\Cursors\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:768
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Windows\Cursors\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1364
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\WmiPrvSE.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2388
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2432
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1960
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1728
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2920
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1724
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2988
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2908
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2116
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2324
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2084
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\OSPPSVC.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2996
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1672
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\OSPPSVC.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2948
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Windows\AppCompat\Programs\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1740
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows\AppCompat\Programs\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Windows\AppCompat\Programs\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2136

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files\Windows Defender\en-US\explorer.exe

      Filesize

      1.5MB

      MD5

      8f7fa3b34b52d77c923711a5b6510df0

      SHA1

      171914ec44b3bb7062f5b21bf5f628c9c1aa2b48

      SHA256

      8f1fc87e97923cc9f810b0893e2742c277992b6ca29f9a79e66c8f3938de5955

      SHA512

      68d82717828e8ed1598e8599c39b0898bd7f4a11fadf232e5cc58ffd21028fa61ac351f0dc9135ecbe7a42758ec301a73ac4c06c3c3678c7ecb0d2837a756d63

    • C:\Users\Admin\AppData\Local\Temp\rSnsL5gcFm.bat

      Filesize

      239B

      MD5

      20b561feeb9de8ec68de81da4dfb62b9

      SHA1

      4d8bc81c4f773f2652773f90dfcc51f4b81b75ad

      SHA256

      d0acbff83eba85ed11c051175b23ca044fd9388ea891b818b5df4f762aba4fff

      SHA512

      09a7a50166d13ef5cc072ce40bf7a448fdb1d0bd81f3024dcf8be1516cdd4aca5f7e9d5432754e71b09e6552f54bfc79adaa3e2fdab1d75e530b2b325292fc56

    • C:\Windows\Cursors\Idle.exe

      Filesize

      1.5MB

      MD5

      486dc33f34ee637efa5ab5265507089e

      SHA1

      00c55a6c0f468c17c2b1e3aa99f2d20fd8302b74

      SHA256

      243c57c5f8e5341b9ac607adad28417fe389a607d5f3e396a66a97597de85f14

      SHA512

      bccf860bf90eabb4430c97054127ec8ffc0c439c5bc619698ba3e81283c4599f12653d565880bb8f96724d56b17ba5d3ef4f24a7b659d87370479c9b7f43fbe3

    • memory/1660-199-0x00000000003E0000-0x000000000056E000-memory.dmp

      Filesize

      1.6MB

    • memory/2508-10-0x0000000000650000-0x0000000000658000-memory.dmp

      Filesize

      32KB

    • memory/2508-13-0x0000000000670000-0x0000000000678000-memory.dmp

      Filesize

      32KB

    • memory/2508-6-0x0000000000630000-0x0000000000646000-memory.dmp

      Filesize

      88KB

    • memory/2508-7-0x0000000000300000-0x0000000000310000-memory.dmp

      Filesize

      64KB

    • memory/2508-8-0x0000000000510000-0x0000000000518000-memory.dmp

      Filesize

      32KB

    • memory/2508-11-0x0000000000660000-0x000000000066C000-memory.dmp

      Filesize

      48KB

    • memory/2508-0-0x000007FEF53E3000-0x000007FEF53E4000-memory.dmp

      Filesize

      4KB

    • memory/2508-12-0x0000000000680000-0x000000000068E000-memory.dmp

      Filesize

      56KB

    • memory/2508-14-0x0000000000810000-0x000000000081C000-memory.dmp

      Filesize

      48KB

    • memory/2508-4-0x00000000002E0000-0x00000000002E8000-memory.dmp

      Filesize

      32KB

    • memory/2508-15-0x0000000000820000-0x0000000000828000-memory.dmp

      Filesize

      32KB

    • memory/2508-16-0x0000000002170000-0x000000000217A000-memory.dmp

      Filesize

      40KB

    • memory/2508-18-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

      Filesize

      9.9MB

    • memory/2508-5-0x00000000002F0000-0x0000000000300000-memory.dmp

      Filesize

      64KB

    • memory/2508-3-0x00000000002C0000-0x00000000002DC000-memory.dmp

      Filesize

      112KB

    • memory/2508-189-0x000007FEF53E3000-0x000007FEF53E4000-memory.dmp

      Filesize

      4KB

    • memory/2508-195-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

      Filesize

      9.9MB

    • memory/2508-2-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

      Filesize

      9.9MB

    • memory/2508-1-0x0000000000310000-0x000000000049E000-memory.dmp

      Filesize

      1.6MB