Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-01-2025 12:31

General

  • Target

    D0CD2568BF153709F5ED4491BD8534AB.exe

  • Size

    826KB

  • MD5

    d0cd2568bf153709f5ed4491bd8534ab

  • SHA1

    070e2b33bd4e51417eb1ac74301f25afb35d7ec2

  • SHA256

    4d77c973871f6870b7adb2703dcfa7d1941d12aaf6ad761f0d7cdd94092db798

  • SHA512

    0ea13e0dff1c362eeb02f75ebef502a3605f5c381082f05548dfd0213cdc78aa90757876f9bae5348255794645a99eb83a0c72fb27e64d4b1c02d9d0cc1c6b98

  • SSDEEP

    12288:82NE1Iv7VIWfLEcNif4F4aJHIi4ENQj0SeyZIZOJ59bsAzeA7:e1aV9fLofI4aVNYGZ059bNyI

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 30 IoCs

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

  • DCRat payload 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 30 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 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\D0CD2568BF153709F5ED4491BD8534AB.exe
    "C:\Users\Admin\AppData\Local\Temp\D0CD2568BF153709F5ED4491BD8534AB.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2820
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\nCS3PLly1U.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:448
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:1348
        • C:\Windows\Downloaded Program Files\audiodg.exe
          "C:\Windows\Downloaded Program Files\audiodg.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1288
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "D0CD2568BF153709F5ED4491BD8534ABD" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\D0CD2568BF153709F5ED4491BD8534AB.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2936
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "D0CD2568BF153709F5ED4491BD8534AB" /sc ONLOGON /tr "'C:\MSOCache\All Users\D0CD2568BF153709F5ED4491BD8534AB.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2924
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "D0CD2568BF153709F5ED4491BD8534ABD" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\D0CD2568BF153709F5ED4491BD8534AB.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1748
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 11 /tr "'C:\Windows\Downloaded Program Files\audiodg.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2872
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Windows\Downloaded Program Files\audiodg.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2576
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 8 /tr "'C:\Windows\Downloaded Program Files\audiodg.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2640
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 7 /tr "'C:\Program Files\Internet Explorer\ja-JP\WmiPrvSE.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2608
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\ja-JP\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2064
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 11 /tr "'C:\Program Files\Internet Explorer\ja-JP\WmiPrvSE.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1600
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Program Files\7-Zip\Lang\smss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1608
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:672
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Program Files\7-Zip\Lang\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2376
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\Downloads\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1248
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Admin\Downloads\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2780
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Downloads\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2880
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Sidebar\ja-JP\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1952
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\ja-JP\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2792
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Sidebar\ja-JP\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:300
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Windows\it-IT\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2364
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\it-IT\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1256
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Windows\it-IT\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2900
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\Windows\LiveKernelReports\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1208
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\LiveKernelReports\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:880
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\Windows\LiveKernelReports\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:348
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\Program Files\Internet Explorer\ja-JP\taskhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1696
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\ja-JP\taskhost.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 "taskhostt" /sc MINUTE /mo 14 /tr "'C:\Program Files\Internet Explorer\ja-JP\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2996
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\audiodg.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2136
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\audiodg.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2240
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\audiodg.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1176

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\nCS3PLly1U.bat

      Filesize

      212B

      MD5

      2afd85cfc5bafebd09c8bce6d9e42c56

      SHA1

      af6e137839cef719b9e82acda74370ca26dace2a

      SHA256

      acb2454973064bd30270bf118aeb9d809e493f40a454ac026c2068a3575bb5c0

      SHA512

      2011c4e9dfe5a8eae99d87eb1e78a125b68d3224b82c59118a96d548f7ae63120359c276cbc2600b515ca95dbc417abef671342590abedabf25095b9147d5bfa

    • C:\Users\Admin\Downloads\csrss.exe

      Filesize

      826KB

      MD5

      d0cd2568bf153709f5ed4491bd8534ab

      SHA1

      070e2b33bd4e51417eb1ac74301f25afb35d7ec2

      SHA256

      4d77c973871f6870b7adb2703dcfa7d1941d12aaf6ad761f0d7cdd94092db798

      SHA512

      0ea13e0dff1c362eeb02f75ebef502a3605f5c381082f05548dfd0213cdc78aa90757876f9bae5348255794645a99eb83a0c72fb27e64d4b1c02d9d0cc1c6b98

    • memory/1288-31-0x0000000000A50000-0x0000000000B26000-memory.dmp

      Filesize

      856KB

    • memory/2820-0-0x000007FEF5933000-0x000007FEF5934000-memory.dmp

      Filesize

      4KB

    • memory/2820-1-0x0000000000E60000-0x0000000000F36000-memory.dmp

      Filesize

      856KB

    • memory/2820-2-0x000007FEF5930000-0x000007FEF631C000-memory.dmp

      Filesize

      9.9MB

    • memory/2820-27-0x000007FEF5930000-0x000007FEF631C000-memory.dmp

      Filesize

      9.9MB