Analysis

  • max time kernel
    136s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    31-10-2024 03:40

General

  • Target

    9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe

  • Size

    1.6MB

  • MD5

    844679e76d8254bedd67c98610f7d7ac

  • SHA1

    4222ebbb055830096b829f072783423dbe255932

  • SHA256

    9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942

  • SHA512

    fddb80736936d7c0d46ec3958885237681cbbd416455d7a48d075092d38a0c5e435112c25b595b8cc99b0a8ed2143ac2f28e893373a7b6e9772ee722706a3c05

  • SSDEEP

    24576:2ztKoZmCJ4YrujnaOBDEzKt3pJqc7BnA8js2TvgAts0qB0FjbpcKSzQy8v1:O995MUzKNac7BnbbTvgCFTYQy+

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.

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 7 IoCs
  • 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.

  • 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: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 51 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 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\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe
    "C:\Users\Admin\AppData\Local\Temp\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2936
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\ru2guYCOAm.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:612
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:2260
        • C:\Windows\system32\PING.EXE
          ping -n 10 localhost
          3⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:2464
        • C:\Program Files (x86)\Windows Mail\sppsvc.exe
          "C:\Program Files (x86)\Windows Mail\sppsvc.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: CmdExeWriteProcessMemorySpam
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:2300
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Recent\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2920
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Default\Recent\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2776
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Recent\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2972
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Mail\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2764
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2620
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Mail\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2404
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Program Files\Mozilla Firefox\browser\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\browser\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:592
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Program Files\Mozilla Firefox\browser\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2716
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a219429" /sc MINUTE /mo 10 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1140
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942" /sc ONLOGON /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2348
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a219429" /sc MINUTE /mo 5 /tr "'C:\Recovery\31f19e42-8726-11ef-be9a-dab21757c799\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2360
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files\Microsoft Games\Multiplayer\Backgammon\ja-JP\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2128
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\Microsoft Games\Multiplayer\Backgammon\ja-JP\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2496
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\Program Files\Microsoft Games\Multiplayer\Backgammon\ja-JP\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2808
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a219429" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\AppData\Local\Temp\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2120
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2516
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a219429" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\AppData\Local\Temp\9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:856

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\ru2guYCOAm.bat

      Filesize

      174B

      MD5

      bb4c4546d7f2ff5268287b8f82f0e6df

      SHA1

      af32bdf45fc3083d55fada00a2bc40b7e584a082

      SHA256

      17729fca65cfb77dcd792ed64bb7f14e8e96a91b1d0f996aa3616e5c267d31f1

      SHA512

      4e664a10f45644e1178229b9e3301a7fa0c6b7c737a6ddbc828a46f7b962b98f2dac994d0531f5602995ae40631f467eb2ca3c3bfdc7d029847ccb6935043e1a

    • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Recent\dllhost.exe

      Filesize

      1.6MB

      MD5

      844679e76d8254bedd67c98610f7d7ac

      SHA1

      4222ebbb055830096b829f072783423dbe255932

      SHA256

      9b08f03985d3378123ba236fae1b41b42fcc9af87932655a5120e04fa9a21942

      SHA512

      fddb80736936d7c0d46ec3958885237681cbbd416455d7a48d075092d38a0c5e435112c25b595b8cc99b0a8ed2143ac2f28e893373a7b6e9772ee722706a3c05

    • memory/2300-28-0x0000000000950000-0x0000000000AF2000-memory.dmp

      Filesize

      1.6MB

    • memory/2936-0-0x000007FEF5B13000-0x000007FEF5B14000-memory.dmp

      Filesize

      4KB

    • memory/2936-1-0x0000000000210000-0x00000000003B2000-memory.dmp

      Filesize

      1.6MB

    • memory/2936-2-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

      Filesize

      9.9MB

    • memory/2936-3-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

      Filesize

      9.9MB

    • memory/2936-4-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

      Filesize

      9.9MB

    • memory/2936-6-0x0000000000420000-0x000000000042E000-memory.dmp

      Filesize

      56KB

    • memory/2936-7-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

      Filesize

      9.9MB

    • memory/2936-11-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

      Filesize

      9.9MB

    • memory/2936-25-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

      Filesize

      9.9MB