Analysis

  • max time kernel
    20s
  • max time network
    26s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    05-07-2024 01:21

General

  • Target

    b56d3e6d1b59e49bbec7d67b46efdabcd4f63113d4937e713c017a5c8307c1f9.exe

  • Size

    2.7MB

  • MD5

    22acd327c5273659a31e56d94cefed20

  • SHA1

    0c3534ab1f3f2fbc3b2410b50c0bd3450e8b7e20

  • SHA256

    b56d3e6d1b59e49bbec7d67b46efdabcd4f63113d4937e713c017a5c8307c1f9

  • SHA512

    046edff80da24dd5a8a4717c8f4059967faea2d82b45270e93c1386ca7ac27031aad61ce7552a26aef1ae1c59afad969602f1f72ae497817500ff6b43f605724

  • SSDEEP

    49152:fcg4fLmoCxQVw7OocLXGQ7xEnei4LnuINVRtEOmksWP1gPJ:fr4fLmdWzxLB7ineruitaRWmPJ

Malware Config

Signatures

  • DcRat

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

  • 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.

  • Disables Task Manager via registry modification
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 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\b56d3e6d1b59e49bbec7d67b46efdabcd4f63113d4937e713c017a5c8307c1f9.exe
    "C:\Users\Admin\AppData\Local\Temp\b56d3e6d1b59e49bbec7d67b46efdabcd4f63113d4937e713c017a5c8307c1f9.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3004
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providerReviewperfsvc\82mN47a0TiFi3a9eGnk.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2348
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\providerReviewperfsvc\jW8bFRH7MHNFa6gk2NSgaGKIpk.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2236
        • C:\providerReviewperfsvc\hyperIntoruntime.exe
          "C:\providerReviewperfsvc\hyperIntoruntime.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1476
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\deoo4TtbGV.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2164
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:236
              • C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe
                "C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:792
          • C:\Windows\SysWOW64\reg.exe
            reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
            4⤵
            • Modifies registry key
            PID:2504
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 6 /tr "'C:\providerReviewperfsvc\lsm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2876
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\providerReviewperfsvc\lsm.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 "lsml" /sc MINUTE /mo 11 /tr "'C:\providerReviewperfsvc\lsm.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 "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2660
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2608
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2636
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2000
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 14 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1996
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2100
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\Application Data\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:412
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\Application Data\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:976
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Application Data\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1688
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1016
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2856
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2592
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\providerReviewperfsvc\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1156
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\providerReviewperfsvc\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2860
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\providerReviewperfsvc\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1128
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\smss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:892
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2104
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3016
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2980
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:836
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Recovery\ba13f242-3a65-11ef-94cb-d685e2345d05\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:456
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1260
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2120
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:804

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\deoo4TtbGV.bat

      Filesize

      225B

      MD5

      26d32bedefd61759ae2f18e6b6b4ad17

      SHA1

      736b917362d6c586848bf263202e251311580fe4

      SHA256

      6afd59baf02b49fe25d45fc93e6aea091ce09d813196fc1c07355a2ff8ccba56

      SHA512

      2b1b4291e9cd47db6b3a0db08d0e3352658d6820203b1519d63543c65c248b71f773765d4352a5bbe0f8eea67f0c014b18c787ef62fab5387afe146d3d99e2e6

    • C:\providerReviewperfsvc\82mN47a0TiFi3a9eGnk.vbe

      Filesize

      235B

      MD5

      fb11cc210ba0447a34647e724e8ab39d

      SHA1

      8d99ce75967a91b93d50d1125c2688aae2831318

      SHA256

      577cbff67180bfc384ac423878600c776a62e2c17d0a54bb5d84fb3f242eff7d

      SHA512

      5b920ec51d114db6ff6fec4893c438d26fc29d3f785a8976377ebdd2d6106ea3f114fbbc5ef1488baaefc202eb23c0c3c2bec2fa4a45439fb98d85e79be38046

    • C:\providerReviewperfsvc\jW8bFRH7MHNFa6gk2NSgaGKIpk.bat

      Filesize

      170B

      MD5

      4745423eb28e951e9b234c245830068f

      SHA1

      87240696a0553cb46197011e6b734cd21710691a

      SHA256

      f8fcb0384e78f0368c59200e3be9101a7eaafb5091db0a624d26b67d5d096b84

      SHA512

      ec7cfc4d61c2b054af2cd2156d18ad8dd0f682911a200284aa077d84cf9c9f050fda75f5cbc6e88273bc9b3e3f1c0cb85b52bb96ee5e8278a2781989808d2213

    • \providerReviewperfsvc\hyperIntoruntime.exe

      Filesize

      1.2MB

      MD5

      ca3ae9ae64643d74d4eaf06f154f272a

      SHA1

      e0eaf5cb4e0281d0cd0efc33e5fad25c2449442d

      SHA256

      81c54e77b089f4e527ae6d671b3790721c9aa1984a79d9608032d33036727392

      SHA512

      5580a4329ca2eba7016f601ff39e0f76167c4baa09ce5c42d5e6f0d494629ce73e91d540b1e78dbb905bb7e71afd61612d64f3bba35461d91ab947568376e95a

    • memory/792-48-0x0000000001300000-0x0000000001438000-memory.dmp

      Filesize

      1.2MB

    • memory/1476-15-0x0000000001020000-0x0000000001158000-memory.dmp

      Filesize

      1.2MB

    • memory/1476-16-0x0000000000810000-0x000000000082C000-memory.dmp

      Filesize

      112KB

    • memory/1476-17-0x0000000000BB0000-0x0000000000BC6000-memory.dmp

      Filesize

      88KB

    • memory/1476-18-0x0000000000660000-0x000000000066E000-memory.dmp

      Filesize

      56KB

    • memory/1476-19-0x0000000000D30000-0x0000000000D38000-memory.dmp

      Filesize

      32KB

    • memory/3004-0-0x0000000000E80000-0x00000000012D6000-memory.dmp

      Filesize

      4.3MB

    • memory/3004-8-0x0000000000E80000-0x00000000012D6000-memory.dmp

      Filesize

      4.3MB