Analysis

  • max time kernel
    34s
  • max time network
    62s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    30/06/2024, 13:59

Errors

Reason
Machine shutdown

General

  • Target

    gu.exe

  • Size

    37KB

  • MD5

    5623a039c27a4c274b375c83e42651d4

  • SHA1

    877caa65809f345247c37d0bf64a49b1abda1e60

  • SHA256

    87d0845412d5ad22a56954c151f0ae21cba71d2284189fdb0d3c6cb93b6282eb

  • SHA512

    3f896c083919d310b4715d267dfccf57e10c8ba67a33f4feb1a6839cb97b922868339b9f448a5ad4360229837c030a03465337ec1aaba7d4fca64b8a31c00fd2

  • SSDEEP

    768:/y0yQEkNVfCNWtkriwFYbMLrM+rMRa8NuOyt:hVqNWimwy4U+gRJNx

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

gu

C2

127.0.0.1:2323

Mutex

b7f2f50a5eff21f2499c81ed48fee825

Attributes
  • reg_key

    b7f2f50a5eff21f2499c81ed48fee825

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\gu.exe
    "C:\Users\Admin\AppData\Local\Temp\gu.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1300
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:2892
  • 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:2664
    • 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,0x7fef7489758,0x7fef7489768,0x7fef7489778
      2⤵
        PID:2728
      • 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=1140 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:2
        2⤵
          PID:296
        • 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=1472 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:8
          2⤵
            PID:2600
          • 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=1588 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:8
            2⤵
              PID:2828
            • 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=2308 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:1
              2⤵
                PID:2392
              • 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=2320 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:1
                2⤵
                  PID:1632
                • 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=1548 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:2
                  2⤵
                    PID:568
                  • 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=1344 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:1
                    2⤵
                      PID:1884
                    • 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=3296 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:8
                      2⤵
                        PID:1336
                      • 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=3324 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:1
                        2⤵
                          PID:2008
                        • 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=11 --mojo-platform-channel-handle=3040 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:1
                          2⤵
                            PID:1304
                          • 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=12 --mojo-platform-channel-handle=2612 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:1
                            2⤵
                              PID:1744
                          • 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:2300
                            • C:\Windows\system32\LogonUI.exe
                              "LogonUI.exe" /flags:0x0
                              1⤵
                                PID:1052
                              • C:\Windows\system32\LogonUI.exe
                                "LogonUI.exe" /flags:0x1
                                1⤵
                                  PID:1728

                                Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\68c7bf52-d61b-4c54-84dc-00fc586f79e2.tmp

                                        Filesize

                                        140KB

                                        MD5

                                        98c1096f31b86c53eba9ef008c02175a

                                        SHA1

                                        04b4c859c557408aebfcdec86d03978a7147370c

                                        SHA256

                                        67a310d9ab7f28753a813b63e5d53370b7b4f96bfacbcebbfc9bd6487c38973a

                                        SHA512

                                        9a72e992f9e13bbe4fe6fd9d9c1068e48db984ff85b13bff8b9a6e0289f94f4785d3c59888d5978b5df8554f45731186504f98fb1b342bed2348ea8b0619f940

                                      • 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\Preferences

                                        Filesize

                                        5KB

                                        MD5

                                        747bdec1675ba47f8e1d959b3e9877be

                                        SHA1

                                        81a4881e455d46cb57eb8361f4240739d7e35a16

                                        SHA256

                                        2552ce5e16696ebddce54978a3d329d61415c697e59a9124f73ddf5c183056b7

                                        SHA512

                                        8ee1d68b2dad4382c364fd6b6c8c7a2fd0c1367604d795223b1b16b07b7241ecef1bca2754312ea131fc684d28f3f8238bd4f338bde7d8309096aa8d163e3529

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp

                                        Filesize

                                        16B

                                        MD5

                                        18e723571b00fb1694a3bad6c78e4054

                                        SHA1

                                        afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                        SHA256

                                        8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                        SHA512

                                        43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

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

                                        Filesize

                                        140KB

                                        MD5

                                        ec6fffcce86aa6ffd6ceb9670efbd9dc

                                        SHA1

                                        13abc6ba1b560480f154bbc2a82d5cd13ea9ee31

                                        SHA256

                                        00e1634c3ef113afacbb7ddad46646ea452c39ddc49fd549d95a3bddfd814fd1

                                        SHA512

                                        50c525789727b5c895dc3d2a9b79f83bcc9f504432f7c46cb69cb9dd32d9552b44df9061f1db2691dbf3a49662bce6d895124a55f19b038b1a09261077407bcb

                                      • \Users\Admin\AppData\Local\Temp\server.exe

                                        Filesize

                                        37KB

                                        MD5

                                        5623a039c27a4c274b375c83e42651d4

                                        SHA1

                                        877caa65809f345247c37d0bf64a49b1abda1e60

                                        SHA256

                                        87d0845412d5ad22a56954c151f0ae21cba71d2284189fdb0d3c6cb93b6282eb

                                        SHA512

                                        3f896c083919d310b4715d267dfccf57e10c8ba67a33f4feb1a6839cb97b922868339b9f448a5ad4360229837c030a03465337ec1aaba7d4fca64b8a31c00fd2

                                      • memory/1300-10-0x0000000074F30000-0x00000000754DB000-memory.dmp

                                        Filesize

                                        5.7MB

                                      • memory/1300-11-0x0000000074F30000-0x00000000754DB000-memory.dmp

                                        Filesize

                                        5.7MB

                                      • memory/1300-61-0x0000000074F30000-0x00000000754DB000-memory.dmp

                                        Filesize

                                        5.7MB

                                      • memory/1300-180-0x0000000074F30000-0x00000000754DB000-memory.dmp

                                        Filesize

                                        5.7MB

                                      • memory/1916-12-0x0000000074F30000-0x00000000754DB000-memory.dmp

                                        Filesize

                                        5.7MB

                                      • memory/1916-0-0x0000000074F31000-0x0000000074F32000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/1916-2-0x0000000074F30000-0x00000000754DB000-memory.dmp

                                        Filesize

                                        5.7MB

                                      • memory/1916-1-0x0000000074F30000-0x00000000754DB000-memory.dmp

                                        Filesize

                                        5.7MB