Analysis

  • max time kernel
    115s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/01/2025, 19:28

General

  • Target

    620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051.exe

  • Size

    2.0MB

  • MD5

    10ff87f8fabc6154f9a370f7fd17f928

  • SHA1

    8dcfbb5f1793861d917c38d77b241f2c73f7344b

  • SHA256

    620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051

  • SHA512

    e7ca4a43bf8eb6fd06d180d7d4befb42887020f626c088616627f35362fb549689594a0425deb86a778067ae102219cb299677d6802ddcc8d555da9032a9bf9e

  • SSDEEP

    24576:YIWvTgWtxIEUy/N3VfEj2kiGJrgnhU66dtZyXSt1Q65bNAJO4f6/NJmlEUDAS9gm:YIWTxhVG7ohU665Y0JbNm8mkjYLyu

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 18 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 7 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 18 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 8 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\620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051.exe
    "C:\Users\Admin\AppData\Local\Temp\620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3332
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\qQl0OSbWT6.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4680
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:440
        • C:\Windows\system32\PING.EXE
          ping -n 10 localhost
          3⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:2612
        • C:\Program Files (x86)\Windows NT\spoolsv.exe
          "C:\Program Files (x86)\Windows NT\spoolsv.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:744
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 7 /tr "'C:\Windows\System\unsecapp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3744
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Windows\System\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1472
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 5 /tr "'C:\Windows\System\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2728
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows NT\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4984
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3000
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows NT\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:216
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1232
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Default\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3664
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:112
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 5 /tr "'C:\Windows\PolicyDefinitions\it-IT\sihost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2724
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Windows\PolicyDefinitions\it-IT\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 6 /tr "'C:\Windows\PolicyDefinitions\it-IT\sihost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2128
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\Windows\L2Schemas\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2736
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\L2Schemas\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4324
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Windows\L2Schemas\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3172
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d10516" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\Temp\620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3708
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d10516" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\AppData\Local\Temp\620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3552

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\qQl0OSbWT6.bat

      Filesize

      173B

      MD5

      0ed5d56d8584504519579d98dc554462

      SHA1

      b3af7b167c5d611ffef2d0a098e77dbc9c4afa00

      SHA256

      e6f37b3cbfe39a0ced8e9bd667e4af9de33fd60dc9ff490625d801498d11e564

      SHA512

      a4508c3c10b5c9df5c11530e2738f480bcea4532aaf656246df5875d8e398e7013d324b6dd49139de695ceffc35753a82412fb33357cbacf396ae4777d247848

    • C:\Windows\System\unsecapp.exe

      Filesize

      2.0MB

      MD5

      10ff87f8fabc6154f9a370f7fd17f928

      SHA1

      8dcfbb5f1793861d917c38d77b241f2c73f7344b

      SHA256

      620ebdda751738d4c95cb793fbcda971e6cd1dcf082f0da63848c55ed68d1051

      SHA512

      e7ca4a43bf8eb6fd06d180d7d4befb42887020f626c088616627f35362fb549689594a0425deb86a778067ae102219cb299677d6802ddcc8d555da9032a9bf9e

    • memory/744-60-0x000000001B400000-0x000000001B4A9000-memory.dmp

      Filesize

      676KB

    • memory/3332-7-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-21-0x000000001B4B0000-0x000000001B4BC000-memory.dmp

      Filesize

      48KB

    • memory/3332-6-0x0000000001110000-0x000000000111E000-memory.dmp

      Filesize

      56KB

    • memory/3332-0-0x00007FFB28113000-0x00007FFB28115000-memory.dmp

      Filesize

      8KB

    • memory/3332-8-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-10-0x0000000002B80000-0x0000000002B9C000-memory.dmp

      Filesize

      112KB

    • memory/3332-11-0x000000001B4F0000-0x000000001B540000-memory.dmp

      Filesize

      320KB

    • memory/3332-13-0x0000000002BA0000-0x0000000002BB8000-memory.dmp

      Filesize

      96KB

    • memory/3332-15-0x0000000002B60000-0x0000000002B6E000-memory.dmp

      Filesize

      56KB

    • memory/3332-17-0x0000000002B70000-0x0000000002B7E000-memory.dmp

      Filesize

      56KB

    • memory/3332-19-0x000000001B4A0000-0x000000001B4AC000-memory.dmp

      Filesize

      48KB

    • memory/3332-4-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-23-0x000000001B4C0000-0x000000001B4CC000-memory.dmp

      Filesize

      48KB

    • memory/3332-24-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-26-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-3-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-37-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-38-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-39-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-40-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-46-0x000000001B550000-0x000000001B5F9000-memory.dmp

      Filesize

      676KB

    • memory/3332-2-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-48-0x00007FFB28110000-0x00007FFB28BD1000-memory.dmp

      Filesize

      10.8MB

    • memory/3332-1-0x0000000000750000-0x000000000094E000-memory.dmp

      Filesize

      2.0MB