Overview

overview

10

Static

static

ﱞﱞﱞ�...ﱞﱞ

windows10_x64

10

ﱞﱞﱞ�...ฺฺ

windows10_x64

10

ﱞﱞﱞ�...ﱞﱞ

windows10_x64

10

ﱞﱞﱞ�...ﱞﱞ

windows10_x64

ﱞﱞﱞ�...ﱞﱞ

windows7_x64

10

win102

windows10_x64

8

win104

windows10_x64

win105

windows10_x64

win106

windows10_x64

win103

windows10_x64

10

win101

windows10_x64

win100

windows10_x64

Resubmissions

24-04-2021 20:28

210424-hdvwe2nvza 10

24-04-2021 19:13

210424-ybjq8yj7ej 10

24-04-2021 19:13

210424-lbec8bsxas 10

24-04-2021 19:13

210424-p1q7nfdl5n 10

24-04-2021 19:13

210424-zsvmftzny6 10

24-04-2021 15:54

210424-bvebvx5d4j 10

24-04-2021 08:51

210424-fycslxztl2 10

24-04-2021 06:48

210424-dpw71r8bwa 10

Analysis

  • max time kernel
    45s
  • max time network
    64s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    24-04-2021 19:13

Sharing

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Report Analysis Logs

General

  • Target

    keygen-step-4.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Score
10/10
dcratdiscoveryinfostealerpersistencerat

Malware Config

Signatures

  • DcRat

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

    ratinfostealerdcrat
  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 12 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s SENS
    1⤵
      PID:1404
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2424
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s Browser
      1⤵
        PID:2788
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s WpnService
        1⤵
          PID:2708
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
          1⤵
            PID:2696
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
            1⤵
              PID:2476
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1852
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s Themes
                1⤵
                  PID:1212
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                  1⤵
                    PID:1204
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                    1⤵
                      PID:1076
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                      1⤵
                        PID:596
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                        1⤵
                          PID:68
                        • C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe
                          "C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe"
                          1⤵
                          • Suspicious use of WriteProcessMemory
                          PID:636
                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
                            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe"
                            2⤵
                            • Executes dropped EXE
                            • Drops file in Program Files directory
                            • Suspicious use of SetWindowsHookEx
                            • Suspicious use of WriteProcessMemory
                            PID:1616
                            • C:\Windows\SysWOW64\rundll32.exe
                              "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                              3⤵
                              • Loads dropped DLL
                              • Modifies registry class
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              PID:1780
                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
                            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe"
                            2⤵
                            • Executes dropped EXE
                            • Suspicious use of AdjustPrivilegeToken
                            PID:2300
                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe
                            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                            2⤵
                            • Executes dropped EXE
                            • Suspicious use of WriteProcessMemory
                            PID:784
                            • C:\Users\Admin\AppData\Local\Temp\is-HV6KG.tmp\Install.tmp
                              "C:\Users\Admin\AppData\Local\Temp\is-HV6KG.tmp\Install.tmp" /SL5="$B01DC,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                              3⤵
                              • Executes dropped EXE
                              • Loads dropped DLL
                              • Suspicious use of WriteProcessMemory
                              PID:3976
                              • C:\Users\Admin\AppData\Local\Temp\is-HUD4M.tmp\Ultra.exe
                                "C:\Users\Admin\AppData\Local\Temp\is-HUD4M.tmp\Ultra.exe" /S /UID=burnerch1
                                4⤵
                                • Drops file in Drivers directory
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • Drops file in Program Files directory
                                • Suspicious use of AdjustPrivilegeToken
                                • Suspicious use of WriteProcessMemory
                                PID:3824
                                • C:\Program Files\Mozilla Firefox\ZNCRRHFOWL\ultramediaburner.exe
                                  "C:\Program Files\Mozilla Firefox\ZNCRRHFOWL\ultramediaburner.exe" /VERYSILENT
                                  5⤵
                                  • Executes dropped EXE
                                  • Suspicious use of WriteProcessMemory
                                  PID:1508
                                  • C:\Users\Admin\AppData\Local\Temp\is-9ENCQ.tmp\ultramediaburner.tmp
                                    "C:\Users\Admin\AppData\Local\Temp\is-9ENCQ.tmp\ultramediaburner.tmp" /SL5="$20200,281924,62464,C:\Program Files\Mozilla Firefox\ZNCRRHFOWL\ultramediaburner.exe" /VERYSILENT
                                    6⤵
                                    • Executes dropped EXE
                                    • Drops file in Program Files directory
                                    • Suspicious behavior: EnumeratesProcesses
                                    • Suspicious use of FindShellTrayWindow
                                    • Suspicious use of WriteProcessMemory
                                    PID:1184
                                    • C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe
                                      "C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe" -silent -desktopShortcut -programMenu
                                      7⤵
                                      • Executes dropped EXE
                                      PID:996
                                • C:\Users\Admin\AppData\Local\Temp\e7-f677b-6b6-92f88-49608f6d723b1\Waepuvaeshyro.exe
                                  "C:\Users\Admin\AppData\Local\Temp\e7-f677b-6b6-92f88-49608f6d723b1\Waepuvaeshyro.exe"
                                  5⤵
                                  • Executes dropped EXE
                                  PID:3444
                                • C:\Users\Admin\AppData\Local\Temp\b5-439f2-300-33fad-65d581411f98b\Raevaezhyzhite.exe
                                  "C:\Users\Admin\AppData\Local\Temp\b5-439f2-300-33fad-65d581411f98b\Raevaezhyzhite.exe"
                                  5⤵
                                  • Executes dropped EXE
                                  PID:2664
                                  • C:\Windows\System32\cmd.exe
                                    "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\c33ty1ka.u51\instEU.exe & exit
                                    6⤵
                                      PID:6268
                                      • C:\Users\Admin\AppData\Local\Temp\c33ty1ka.u51\instEU.exe
                                        C:\Users\Admin\AppData\Local\Temp\c33ty1ka.u51\instEU.exe
                                        7⤵
                                          PID:6888
                                      • C:\Windows\System32\cmd.exe
                                        "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\u3ieoemi.j2h\google-game.exe & exit
                                        6⤵
                                          PID:4680
                                          • C:\Users\Admin\AppData\Local\Temp\u3ieoemi.j2h\google-game.exe
                                            C:\Users\Admin\AppData\Local\Temp\u3ieoemi.j2h\google-game.exe
                                            7⤵
                                              PID:4840
                                              • C:\Windows\SysWOW64\rundll32.exe
                                                "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                                                8⤵
                                                  PID:5032
                                            • C:\Windows\System32\cmd.exe
                                              "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\yzl3fx2g.gtq\md1_1eaf.exe & exit
                                              6⤵
                                                PID:5128
                                                • C:\Users\Admin\AppData\Local\Temp\yzl3fx2g.gtq\md1_1eaf.exe
                                                  C:\Users\Admin\AppData\Local\Temp\yzl3fx2g.gtq\md1_1eaf.exe
                                                  7⤵
                                                    PID:5752
                                                • C:\Windows\System32\cmd.exe
                                                  "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\krexjz2k.bfc\y1.exe & exit
                                                  6⤵
                                                    PID:5660
                                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe
                                            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe"
                                            2⤵
                                              PID:3632
                                              • C:\Users\Admin\AppData\Roaming\66C9.tmp.exe
                                                "C:\Users\Admin\AppData\Roaming\66C9.tmp.exe"
                                                3⤵
                                                  PID:4224
                                                • C:\Users\Admin\AppData\Roaming\6AA3.tmp.exe
                                                  "C:\Users\Admin\AppData\Roaming\6AA3.tmp.exe"
                                                  3⤵
                                                    PID:4484
                                                    • C:\Windows\system32\msiexec.exe
                                                      -P stratum1+ssl://0xb7633a80145Ec9ce2b8b5F80AB36C783064C2E10.w12151@eu-eth.hiveon.net:24443 -R --response-timeout 30 --farm-retries 99999
                                                      4⤵
                                                        PID:5220
                                                      • C:\Windows\system32\msiexec.exe
                                                        -o pool.supportxmr.com:8080 -u 47wDrszce6VbnMB4zhhEA1Gr3EzwHx2eS6QzC5sFoq8iGdMjnzX8bnEjBdQHsAuW8C1SNgxyGa4DQTVnQ9jfhRod73np5P8.w15575 --cpu-max-threads-hint 50 -r 9999
                                                        4⤵
                                                          PID:5652
                                                  • \??\c:\windows\system32\svchost.exe
                                                    c:\windows\system32\svchost.exe -k netsvcs -s BITS
                                                    1⤵
                                                    • Suspicious use of SetThreadContext
                                                    • Modifies registry class
                                                    • Suspicious behavior: EnumeratesProcesses
                                                    • Suspicious use of AdjustPrivilegeToken
                                                    • Suspicious use of WriteProcessMemory
                                                    PID:60
                                                    • C:\Windows\system32\svchost.exe
                                                      C:\Windows\system32\svchost.exe -k SystemNetworkService
                                                      2⤵
                                                      • Drops file in System32 directory
                                                      • Checks processor information in registry
                                                      • Modifies data under HKEY_USERS
                                                      • Modifies registry class
                                                      PID:3804
                                                  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
                                                    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
                                                    1⤵
                                                      PID:4104
                                                    • C:\Windows\system32\browser_broker.exe
                                                      C:\Windows\system32\browser_broker.exe -Embedding
                                                      1⤵
                                                        PID:4432

                                                      Network

                                                      MITRE ATT&CK Enterprise v6

                                                      Replay Monitor

                                                      Loading Replay Monitor...

                                                      Downloads

                                                      • memory/60-164-0x000001A6BF240000-0x000001A6BF2B0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/60-283-0x000001A6BF470000-0x000001A6BF4E0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/60-163-0x000001A6BF180000-0x000001A6BF1CB000-memory.dmp

                                                        Filesize

                                                        300KB

                                                        Download

                                                      • memory/68-169-0x000001E321F00000-0x000001E321F70000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/596-178-0x0000019047C60000-0x0000019047CD0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/596-284-0x0000019048340000-0x00000190483B0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/784-193-0x0000000000400000-0x000000000042B000-memory.dmp

                                                        Filesize

                                                        172KB

                                                        Download

                                                      • memory/996-239-0x0000000000964000-0x0000000000965000-memory.dmp

                                                        Filesize

                                                        4KB

                                                        Download

                                                      • memory/996-227-0x0000000000960000-0x0000000000962000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/996-241-0x0000000000965000-0x0000000000967000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/996-238-0x0000000000962000-0x0000000000964000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/1076-279-0x000001F319F50000-0x000001F319FC0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/1076-176-0x000001F319E70000-0x000001F319EE0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/1184-213-0x00000000001E0000-0x00000000001E1000-memory.dmp

                                                        Filesize

                                                        4KB

                                                        Download

                                                      • memory/1204-186-0x00000168EFD60000-0x00000168EFDD0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/1212-184-0x000001F680D40000-0x000001F680DB0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/1404-288-0x00000252C4B70000-0x00000252C4BE0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/1404-180-0x00000252C4950000-0x00000252C49C0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/1508-208-0x0000000000400000-0x0000000000416000-memory.dmp

                                                        Filesize

                                                        88KB

                                                        Download

                                                      • memory/1780-132-0x0000000002C00000-0x0000000002C5C000-memory.dmp

                                                        Filesize

                                                        368KB

                                                        Download

                                                      • memory/1780-131-0x000000000454B000-0x000000000464C000-memory.dmp

                                                        Filesize

                                                        1.0MB

                                                        Download

                                                      • memory/1852-182-0x0000028E5AEA0000-0x0000028E5AF10000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/2300-129-0x0000000001510000-0x000000000152C000-memory.dmp

                                                        Filesize

                                                        112KB

                                                        Download

                                                      • memory/2300-133-0x000000001BC40000-0x000000001BC42000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/2300-130-0x0000000001530000-0x0000000001531000-memory.dmp

                                                        Filesize

                                                        4KB

                                                        Download

                                                      • memory/2300-128-0x0000000001500000-0x0000000001501000-memory.dmp

                                                        Filesize

                                                        4KB

                                                        Download

                                                      • memory/2300-126-0x0000000000FE0000-0x0000000000FE1000-memory.dmp

                                                        Filesize

                                                        4KB

                                                        Download

                                                      • memory/2424-174-0x000001ACF5A90000-0x000001ACF5B00000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/2424-276-0x000001ACF60B0000-0x000001ACF6120000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/2476-172-0x00000141E4560000-0x00000141E45D0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/2476-272-0x00000141E4AA0000-0x00000141E4B10000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/2476-271-0x00000141E42B0000-0x00000141E42FB000-memory.dmp

                                                        Filesize

                                                        300KB

                                                        Download

                                                      • memory/2664-235-0x0000000000972000-0x0000000000974000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/2664-236-0x0000000000974000-0x0000000000975000-memory.dmp

                                                        Filesize

                                                        4KB

                                                        Download

                                                      • memory/2664-228-0x0000000000970000-0x0000000000972000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/2696-188-0x000001BB25840000-0x000001BB258B0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/2708-190-0x000001F04BD80000-0x000001F04BDF0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/2788-166-0x0000027922B70000-0x0000027922BE0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/3444-219-0x0000000002300000-0x0000000002302000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/3632-232-0x0000000000840000-0x000000000084D000-memory.dmp

                                                        Filesize

                                                        52KB

                                                        Download

                                                      • memory/3632-254-0x0000000003990000-0x00000000039D8000-memory.dmp

                                                        Filesize

                                                        288KB

                                                        Download

                                                      • memory/3804-205-0x0000020F00690000-0x0000020F0078F000-memory.dmp

                                                        Filesize

                                                        1020KB

                                                        Download

                                                      • memory/3804-170-0x0000020F7DE70000-0x0000020F7DEE0000-memory.dmp

                                                        Filesize

                                                        448KB

                                                        Download

                                                      • memory/3824-203-0x0000000003060000-0x0000000003062000-memory.dmp

                                                        Filesize

                                                        8KB

                                                        Download

                                                      • memory/3976-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                                                        Filesize

                                                        4KB

                                                        Download

                                                      • memory/5032-273-0x00000000048F0000-0x000000000494C000-memory.dmp

                                                        Filesize

                                                        368KB

                                                        Download

                                                      • memory/5032-269-0x000000000466F000-0x0000000004770000-memory.dmp

                                                        Filesize

                                                        1.0MB

                                                        Download

                                                      • memory/5220-267-0x0000000140000000-0x0000000140383000-memory.dmp

                                                        Filesize

                                                        3.5MB

                                                        Download

                                                      • memory/5220-289-0x0000000140000000-0x0000000140383000-memory.dmp

                                                        Filesize

                                                        3.5MB

                                                        Download

                                                      • memory/5652-296-0x0000000140000000-0x000000014070A000-memory.dmp

                                                        Filesize

                                                        7.0MB

                                                        Download

                                                      • memory/6888-246-0x00000000009F0000-0x0000000000A02000-memory.dmp

                                                        Filesize

                                                        72KB

                                                        Download

                                                      • memory/6888-245-0x00000000001F0000-0x0000000000200000-memory.dmp

                                                        Filesize

                                                        64KB

                                                        Download