Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-07-2024 22:33

General

  • Target

    1e55e82940a34f0347e2ec84674cb6c0N.exe

  • Size

    2.4MB

  • MD5

    1e55e82940a34f0347e2ec84674cb6c0

  • SHA1

    49a82cd8c8a3f020b6dbe9f9a4c409e16b0bbe33

  • SHA256

    8695345472b86220ef4154c2c8f86e301569b082238c84aeff34dea0c5c204e3

  • SHA512

    ce004fa9917044abf01664806301fe84c090e7ebd2e5378b95ecc92b8de37587d411384c54598c515046b93d0f6547c2030d0946b62213ad59e8c2986cb63634

  • SSDEEP

    49152:+bA3xoX3ciWYFZGNtz4QG+evJ692QNMkY/ZXZqqhRfgAlWzRA:+b6CFczzmDv892QNBYRXZqqhxg5RA

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 21 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 3 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 21 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 21 IoCs
  • System policy modification 1 TTPs 6 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\1e55e82940a34f0347e2ec84674cb6c0N.exe
    "C:\Users\Admin\AppData\Local\Temp\1e55e82940a34f0347e2ec84674cb6c0N.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\containerreviewCrtMonitordll\QvTRwOydF6PvsPSbsHoz.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:1696
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\containerreviewCrtMonitordll\1Tl2sJLOUZoaFKUtUGyztdW5bQFfO.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4568
        • C:\containerreviewCrtMonitordll\chainInto.exe
          "C:\containerreviewCrtMonitordll\chainInto.exe"
          4⤵
          • UAC bypass
          • Checks computer location settings
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Drops file in Program Files directory
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:1756
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\KTdiCR95eO.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4728
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:3192
              • C:\Program Files\Windows Sidebar\RuntimeBroker.exe
                "C:\Program Files\Windows Sidebar\RuntimeBroker.exe"
                6⤵
                • UAC bypass
                • Checks computer location settings
                • Executes dropped EXE
                • Checks whether UAC is enabled
                • Modifies registry class
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                • System policy modification
                PID:5084
                • C:\Windows\System32\WScript.exe
                  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\849733cd-f3bb-405d-b0cf-0783b4ff1a7a.vbs"
                  7⤵
                    PID:5020
                  • C:\Windows\System32\WScript.exe
                    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\737da2e8-1b26-4020-88b8-daa7507ea84c.vbs"
                    7⤵
                      PID:4752
              • 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:2164
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\containerreviewCrtMonitordll\sppsvc.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2940
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\containerreviewCrtMonitordll\sppsvc.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3308
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 8 /tr "'C:\containerreviewCrtMonitordll\sppsvc.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3580
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1160
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1032
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2492
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\SearchApp.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1164
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\SearchApp.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3944
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\SearchApp.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:4948
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Sidebar\RuntimeBroker.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2316
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\RuntimeBroker.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:4148
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Sidebar\RuntimeBroker.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1956
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\containerreviewCrtMonitordll\dllhost.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3296
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\containerreviewCrtMonitordll\dllhost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3236
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\containerreviewCrtMonitordll\dllhost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:532
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 10 /tr "'C:\containerreviewCrtMonitordll\WmiPrvSE.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2448
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\containerreviewCrtMonitordll\WmiPrvSE.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2188
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 9 /tr "'C:\containerreviewCrtMonitordll\WmiPrvSE.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1196
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 11 /tr "'C:\containerreviewCrtMonitordll\StartMenuExperienceHost.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3948
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\containerreviewCrtMonitordll\StartMenuExperienceHost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3596
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 9 /tr "'C:\containerreviewCrtMonitordll\StartMenuExperienceHost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1724
        • C:\Windows\system32\wbem\WmiApSrv.exe
          C:\Windows\system32\wbem\WmiApSrv.exe
          1⤵
            PID:1188

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\737da2e8-1b26-4020-88b8-daa7507ea84c.vbs

            Filesize

            502B

            MD5

            7aa1a991f29a40b8a10e02291f66ac62

            SHA1

            e978fbe62a82392cd3e1902ed19230fd7a727f9d

            SHA256

            93500c3e952422665868d08ad9ac99596f8e65f8a1ea78bd6d9adc4b5ac17827

            SHA512

            1047f0e8eadbd42616c9d4c701bd63573085f0c09418726a0b90dd67a71a468ba35b938588a3afa655fa4fe266d2edbe2e32d4985858fe689547e690d817b4c2

          • C:\Users\Admin\AppData\Local\Temp\849733cd-f3bb-405d-b0cf-0783b4ff1a7a.vbs

            Filesize

            726B

            MD5

            8564f6464a4db984e793f582c2a09494

            SHA1

            4da13edcccbd7b5ca085033c204cf0fa0aa65e7c

            SHA256

            c28fe11185242c7570bbc75355ece32f7be1a815764e8a1fbfc2cd24952a4250

            SHA512

            395756d6e09d2ecd1190158317e5f46379ab4827f298f25b723d59f0862b1452ab30d49ffaadd98af025ba75a03d92fee842530435dbbf93c03ed10d4138b43d

          • C:\Users\Admin\AppData\Local\Temp\KTdiCR95eO.bat

            Filesize

            215B

            MD5

            caa1cf3c296a2726a4234c250d9499a2

            SHA1

            a3b4f75e1da358e1e315f51361318e7461a0f55a

            SHA256

            b9ea3b0d26667e189b4c1582da66f293e94cba1af7e992fc4c687b8939c20f62

            SHA512

            96239272a3cb4693de3a79c594a94fca327bafd2a53a911bbbc6964f5db5c42a54c05b8588390f9447c12c1a36f61b9f9a1bde6483a3bf73e7a234bc1f55f097

          • C:\containerreviewCrtMonitordll\1Tl2sJLOUZoaFKUtUGyztdW5bQFfO.bat

            Filesize

            170B

            MD5

            7039783955d4e215e90cdb16e30d51a8

            SHA1

            a3ed136fd2a8e57e760d7f1f4412a4c6d96219d4

            SHA256

            df9a53758d5c34e9422b418b8c28e3f7441dcf2fb48fb81d620e684e50384e84

            SHA512

            7a7b75ea177c4a46a19ebbae5fb7f0fb18dcec0ea617bb377beace17bf3b34098527153ba58852cc4764083c5bfc86e6602340c81a61366d0da5dea3d3bcfb15

          • C:\containerreviewCrtMonitordll\QvTRwOydF6PvsPSbsHoz.vbe

            Filesize

            245B

            MD5

            c9cb24932937faaa045133e6803ba799

            SHA1

            2b0a00bbb55b5f13a782b4881445a6acf1658d6c

            SHA256

            0d74b56311e7161e43106e63e697b61e5ea268a86d771d9758a181fbf9a071d4

            SHA512

            c0607bd0c567b392e74bbdef99c3f5dfdd7e7217ac8aa5d3a9559f94096ee75e01ff686264d5508e84e3dc9a9b4bd0a159e0f4c86dc175c349563c2af3f83838

          • C:\containerreviewCrtMonitordll\chainInto.exe

            Filesize

            2.1MB

            MD5

            53426df99660bf62cab83572cc516da2

            SHA1

            e638b51282a10a04d60803920f6ed95b9f9db670

            SHA256

            390711a4056290cd6dbdc327d81178f7c38ab1850aeb9bde35c1307dd8132481

            SHA512

            58a3a3a3da60cb8e7132f444136630a1f6f2f9072b65cc24482799b8e69a872ee2d8aedef879b7c1bb248878aee0ef42d2e454a794331318b08020e2457e78f9

          • memory/1756-27-0x000000001C0C0000-0x000000001C5E8000-memory.dmp

            Filesize

            5.2MB

          • memory/1756-31-0x000000001BBC0000-0x000000001BBCC000-memory.dmp

            Filesize

            48KB

          • memory/1756-17-0x0000000002980000-0x0000000002990000-memory.dmp

            Filesize

            64KB

          • memory/1756-18-0x0000000002990000-0x00000000029A6000-memory.dmp

            Filesize

            88KB

          • memory/1756-20-0x00000000029E0000-0x00000000029F2000-memory.dmp

            Filesize

            72KB

          • memory/1756-19-0x00000000029B0000-0x00000000029B8000-memory.dmp

            Filesize

            32KB

          • memory/1756-21-0x000000001B420000-0x000000001B430000-memory.dmp

            Filesize

            64KB

          • memory/1756-22-0x00000000029C0000-0x00000000029CA000-memory.dmp

            Filesize

            40KB

          • memory/1756-23-0x00000000029D0000-0x00000000029DC000-memory.dmp

            Filesize

            48KB

          • memory/1756-24-0x000000001B430000-0x000000001B438000-memory.dmp

            Filesize

            32KB

          • memory/1756-25-0x000000001B440000-0x000000001B44C000-memory.dmp

            Filesize

            48KB

          • memory/1756-26-0x000000001BB60000-0x000000001BB72000-memory.dmp

            Filesize

            72KB

          • memory/1756-15-0x000000001B3D0000-0x000000001B420000-memory.dmp

            Filesize

            320KB

          • memory/1756-28-0x000000001BB90000-0x000000001BB9C000-memory.dmp

            Filesize

            48KB

          • memory/1756-30-0x000000001BBB0000-0x000000001BBBC000-memory.dmp

            Filesize

            48KB

          • memory/1756-16-0x00000000010C0000-0x00000000010C8000-memory.dmp

            Filesize

            32KB

          • memory/1756-29-0x000000001BBA0000-0x000000001BBA8000-memory.dmp

            Filesize

            32KB

          • memory/1756-33-0x000000001BCD0000-0x000000001BCDC000-memory.dmp

            Filesize

            48KB

          • memory/1756-32-0x000000001BE40000-0x000000001BE48000-memory.dmp

            Filesize

            32KB

          • memory/1756-36-0x000000001BE00000-0x000000001BE0E000-memory.dmp

            Filesize

            56KB

          • memory/1756-35-0x000000001BCF0000-0x000000001BCFE000-memory.dmp

            Filesize

            56KB

          • memory/1756-34-0x000000001BCE0000-0x000000001BCEA000-memory.dmp

            Filesize

            40KB

          • memory/1756-37-0x000000001BE10000-0x000000001BE1A000-memory.dmp

            Filesize

            40KB

          • memory/1756-38-0x000000001BE20000-0x000000001BE2C000-memory.dmp

            Filesize

            48KB

          • memory/1756-14-0x00000000010A0000-0x00000000010BC000-memory.dmp

            Filesize

            112KB

          • memory/1756-12-0x00007FF8B4943000-0x00007FF8B4945000-memory.dmp

            Filesize

            8KB

          • memory/1756-13-0x0000000000510000-0x000000000072A000-memory.dmp

            Filesize

            2.1MB

          • memory/5084-62-0x000000001CC40000-0x000000001CC52000-memory.dmp

            Filesize

            72KB

          • memory/5084-72-0x000000001EB40000-0x000000001ED02000-memory.dmp

            Filesize

            1.8MB

          • memory/5084-123-0x000000001F4C0000-0x000000001F669000-memory.dmp

            Filesize

            1.7MB