Analysis

  • max time kernel
    147s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15/09/2024, 12:29

General

  • Target

    .exe

  • Size

    745KB

  • MD5

    5e82f4a00b31da2ecd210a7c7575e29d

  • SHA1

    518e5f78b256ee794ebbc8f96275993a9252be23

  • SHA256

    80446e16d616fee4a8ffeef94f2dc1f5737435d07a111de9622f13a98a5f196e

  • SHA512

    5f794743493acff89407966cdc2b3df386389d90f2468ec5a32c4df2a2ba6dfddea60886ab14a6e9a1b4ddc173989278e2c7397d430aea8c01297b40d782a900

  • SSDEEP

    12288:sBpoIY///1UFxJF80IsoBVnsNxd2LFErkUzw2jtQsnmeTRf7qrc5PPjr21tM/7nf:ZIY/4FcHG/MnUzVhmMRfG4lLr2M/T

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

HacKed

C2

thomas-drops.gl.at.ply.gg:45773

Mutex

Windows Update

Attributes
  • reg_key

    Windows Update

  • splitter

    |Hassan|

Signatures

  • DcRat

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Process spawned unexpected child process 19 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • DCRat payload 4 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of WriteProcessMemory 35 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\.exe
    "C:\Users\Admin\AppData\Local\Temp\.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Users\Admin\AppData\Local\Temp\gggg.exe
      "C:\Users\Admin\AppData\Local\Temp\gggg.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2196
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\ChainComponentBrowserwin\zJJP8u9NRTk6u.vbe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2520
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\ChainComponentBrowserwin\ZckenFSJPCIUJWjfI5CZYMEmaPZVg.bat" "
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2056
          • C:\ChainComponentBrowserwin\reviewdriver.exe
            "C:\ChainComponentBrowserwin\reviewdriver.exe"
            5⤵
            • UAC bypass
            • Executes dropped EXE
            • Checks whether UAC is enabled
            • Drops file in System32 directory
            • Drops file in Windows directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            • System policy modification
            PID:1828
            • C:\Windows\ServiceProfiles\NetworkService\Documents\OSPPSVC.exe
              "C:\Windows\ServiceProfiles\NetworkService\Documents\OSPPSVC.exe"
              6⤵
              • Modifies WinLogon for persistence
              • UAC bypass
              • Executes dropped EXE
              • Checks whether UAC is enabled
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              • System policy modification
              PID:1372
              • C:\Windows\System32\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\a8a26390-d046-44f4-873c-de9e3aec259a.vbs"
                7⤵
                  PID:2356
                • C:\Windows\System32\WScript.exe
                  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\6dcfad58-71ec-4b74-b04e-86014ba85a26.vbs"
                  7⤵
                    PID:2452
                  • C:\Windows\system32\cmd.exe
                    cmd /c ""C:\Users\Admin\AppData\Local\Temp\RjWoOVK6wo.bat" "
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2064
                    • C:\Windows\system32\w32tm.exe
                      w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                      8⤵
                        PID:2968
          • C:\Users\Admin\AppData\Local\Temp\Server.exe
            "C:\Users\Admin\AppData\Local\Temp\Server.exe"
            2⤵
            • Drops startup file
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:2456
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\ChainComponentBrowserwin\csrss.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3020
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\ChainComponentBrowserwin\csrss.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2204
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\ChainComponentBrowserwin\csrss.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2944
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Windows\SysWOW64\IME\IMESC5\applets\dllhost.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2428
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\SysWOW64\IME\IMESC5\applets\dllhost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2512
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Windows\SysWOW64\IME\IMESC5\applets\dllhost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2824
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\Windows\ServiceProfiles\NetworkService\Documents\OSPPSVC.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2568
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Windows\ServiceProfiles\NetworkService\Documents\OSPPSVC.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2216
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 13 /tr "'C:\Windows\ServiceProfiles\NetworkService\Documents\OSPPSVC.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1908
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "reviewdriver" /f
          1⤵
          • Process spawned unexpected child process
          PID:960
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "reviewdriverr" /f
          1⤵
          • Process spawned unexpected child process
          PID:696
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "csrss" /f
          1⤵
          • Process spawned unexpected child process
          PID:1816
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "csrssc" /f
          1⤵
          • Process spawned unexpected child process
          PID:1700
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "dllhost" /f
          1⤵
          • Process spawned unexpected child process
          PID:1044
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "dllhostd" /f
          1⤵
          • Process spawned unexpected child process
          PID:1740
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "OSPPSVC" /f
          1⤵
          • Process spawned unexpected child process
          PID:2240
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "OSPPSVCO" /f
          1⤵
          • Process spawned unexpected child process
          PID:1032
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "OSPPSVC" /f
          1⤵
          • Process spawned unexpected child process
          PID:1412
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /delete /tn "OSPPSVCO" /f
          1⤵
          • Process spawned unexpected child process
          PID:1516

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\ChainComponentBrowserwin\886983d96e3d3e

          Filesize

          967B

          MD5

          11b30cc296f2baed14a564ace95d5ede

          SHA1

          d7e5368a4dadc992e4a7cbe08a164e0c236fae33

          SHA256

          235f1ef6ae5bb295f3122c867ffc179f3320141b78547e7c909d0e79bdcf9178

          SHA512

          0e91783632ce8698761e3d5c12e7949adbb323fd4cd061bb70c518c1ad52f46684ba3dcdedc02e593aa24a73299317e74ac9db41512f2f269ed022a0a30a7be4

        • C:\ChainComponentBrowserwin\ZckenFSJPCIUJWjfI5CZYMEmaPZVg.bat

          Filesize

          46B

          MD5

          3e83fda43f1932bb71d930d2f89e68b2

          SHA1

          1fa2f89990c21a7f0eebfbf06f7064c19e46b081

          SHA256

          ecb36758516d13f656baac1a37f3af9dd3e683e8aab3847d65bb82c9eb05cb51

          SHA512

          d6efea92b244d10f5a0e2b228782cc7e1b45fcf262dcc7ea709a9ab8fa458b2e8d3e3bfa4cdf4a4852812d01bb9ff1c7bba65abbe62527e5a84e5b3b15f8ea9b

        • C:\ChainComponentBrowserwin\zJJP8u9NRTk6u.vbe

          Filesize

          230B

          MD5

          b9b72befe720ec640eb23938f752a453

          SHA1

          c621298c3cfac9aa9c5cdfebd5efa0a1b01c7b34

          SHA256

          bddc35ffa29cfc10fc39778a551335781091aec61771943662e66cdf4c4a07ad

          SHA512

          4d119e2aba40fe14d624690103d08620369eeeb0a922a3091027a7cf90597db7d491653ed356eb85a45104bdcbd3eb5876e5c4c508ed85d0e235d71a65578f26

        • C:\Users\Admin\AppData\Local\Temp\6dcfad58-71ec-4b74-b04e-86014ba85a26.vbs

          Filesize

          515B

          MD5

          887fb35f93b83172b8f73226faddd144

          SHA1

          3bfead989ee46298fe71d5403c46bcc9aa0655a4

          SHA256

          794ebf4928d470a64d45f9d26de325ac477fbfdff342af6fa5c157ff6354d29d

          SHA512

          b49fe3bf8aa6ac16c85f02a117021d83eb4bba97533e0d5cb6d93522bdd0ddef5d5af7a91b7e8c36fdc58f39c17403c1f531b3e3668db19fe4e60804cd31f31e

        • C:\Users\Admin\AppData\Local\Temp\RjWoOVK6wo.bat

          Filesize

          315B

          MD5

          6f1e28eed9c9f2fb84f5892f7a3bc584

          SHA1

          da8553b30e6bcca085438f4a32cbb39a2276f312

          SHA256

          b579d0e2113dd9f74d580e80f659059897c733d11d8f450e5d68ec1a4252c38b

          SHA512

          cdd5cfec950c18ea30760f056d2212eeffe84da3c69ac09a7a1df432bc568d8af42e184a87a709dd69eb08ada72009082a7dbf7de46cc030616992304942950b

        • C:\Users\Admin\AppData\Local\Temp\Server.exe

          Filesize

          43KB

          MD5

          eab8788760465b2b46598ff289b4b8c4

          SHA1

          8c7b27c7ec66ea41f7e20afaf1394fb71b7c4a35

          SHA256

          7ba3084c6d0fcc0e6e1fedfdd04d24768b819aaf309b933d0f4243c37297821f

          SHA512

          996471d395c297950a4df7140cf0dda388f87ad8a26fb99feb35fa265873b77a7e100520df69770fbe1554ad4bf7f877f9214a61b44326353935dfe7def12ed0

        • C:\Users\Admin\AppData\Local\Temp\a8a26390-d046-44f4-873c-de9e3aec259a.vbs

          Filesize

          739B

          MD5

          6cea456160a840e020dadfd6830f9872

          SHA1

          9a24fce639d3118dbb9778235190cb6d8e86ab81

          SHA256

          8cf05f6d14596f9efd781dead01c6e25d2b7e127043f01145dd7e90f855b2c7f

          SHA512

          1ce21c2ff064243325a48ce3a05ea24b68b434948ca306ebc61a84273ce94c91c9874bd76fdeb73ac9e7746d88046a1d1323b24a7bd771674aab23a57ef4853f

        • C:\Users\Admin\AppData\Local\Temp\gggg.exe

          Filesize

          1.2MB

          MD5

          c5607848210b7d664771584276d7d7ae

          SHA1

          9a395fbac63306fa240e51646cad80a803064352

          SHA256

          16de1516d3fc00a0873b270ffa44f20c13524827a88798e2743afe0bb06b9815

          SHA512

          ef9c622ee75161fc038456a2a7e7b9e881f66852dd06331fa2fecac13ce4d585b332672d51a6c8ab3dfd5a99de22b863dd52b53750669d0175aea45ed08a6e8b

        • C:\Windows\ServiceProfiles\NetworkService\Documents\1610b97d3ab4a7

          Filesize

          950B

          MD5

          51a987a4736f603ee0948c3a5063b5d6

          SHA1

          891a89ff1ab747d58ec0f9e5bd2cc055106bc044

          SHA256

          106801c26e4133d0912218e310570106bd5197047382f00b7ae4e90de7a22b6a

          SHA512

          4caf6f8c447f612620c4adfdc7390ba420135ced95419dbaeb33d5643d16ba7c8edab7042fb4c738b700b34de95608ecfb3d64abdbb8a3dfb4b888a05a2180cf

        • C:\Windows\SysWOW64\IME\IMESC5\applets\5940a34987c991

          Filesize

          786B

          MD5

          b9d82bc91b3847bbaaf5c2fdffb57308

          SHA1

          c96ba0025568934f8c50babc9f0c017b51ce1bf7

          SHA256

          a6293f03c83c3a52580906f82046d45375acdba2ec95f633676a372b43f940e4

          SHA512

          4d0cc3945b8038cb94499fd3d72c80520bf3540e652dcacca1ae9007938d82d0c449e9a78b00652edd98a463aac953531c246a2825e5a978c7397a575763420a

        • \ChainComponentBrowserwin\reviewdriver.exe

          Filesize

          948KB

          MD5

          2e2c059f61338c40914c10d40502e57e

          SHA1

          e6cb5a1ffdf369b3135c72ab12d71cc3d5f2b053

          SHA256

          8e4df816223a625bf911553d5f80219f81fc44f07ba98c95f379fd12169c2918

          SHA512

          1b1f2dae55f50874532b37ad4ab74a54452f65d7499004b37b0afc3dc2c1d16d66a0e41c1733ac1f4cff9993325d32ea714b441c06ba4eba350136835c746d3e

        • memory/1372-46-0x0000000000C50000-0x0000000000D44000-memory.dmp

          Filesize

          976KB

        • memory/1828-30-0x0000000000440000-0x000000000044A000-memory.dmp

          Filesize

          40KB

        • memory/1828-32-0x0000000000460000-0x000000000046A000-memory.dmp

          Filesize

          40KB

        • memory/1828-31-0x0000000000450000-0x000000000045C000-memory.dmp

          Filesize

          48KB

        • memory/1828-29-0x0000000000E90000-0x0000000000F84000-memory.dmp

          Filesize

          976KB

        • memory/2456-15-0x0000000000E30000-0x0000000000E42000-memory.dmp

          Filesize

          72KB

        • memory/2772-0-0x000007FEF5D73000-0x000007FEF5D74000-memory.dmp

          Filesize

          4KB

        • memory/2772-14-0x000007FEF5D70000-0x000007FEF675C000-memory.dmp

          Filesize

          9.9MB

        • memory/2772-1-0x00000000002C0000-0x0000000000380000-memory.dmp

          Filesize

          768KB