Resubmissions

22/02/2024, 20:23

240222-y6b1raeg3v 10

22/02/2024, 20:20

240222-y4dfssfb46 6

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    22/02/2024, 20:20

General

  • Target

    https://tmpfiles.org/dl/4282465/payload.zip

Score
6/10

Malware Config

Signatures

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 2 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://tmpfiles.org/dl/4282465/payload.zip
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4948
    • 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=0xfc,0x100,0x104,0xd8,0x108,0x7fffb6239758,0x7fffb6239768,0x7fffb6239778
      2⤵
        PID:2908
      • 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=1712 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:2
        2⤵
          PID:3084
        • 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=2152 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:8
          2⤵
            PID:3628
          • 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=2104 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:8
            2⤵
              PID:1228
            • 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=2932 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:1
              2⤵
                PID:1888
              • 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=2924 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:1
                2⤵
                  PID:244
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5448 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:8
                  2⤵
                    PID:3896
                  • 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=5512 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:8
                    2⤵
                      PID:3280
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5488 --field-trial-handle=1872,i,18235710236842130195,12170747366255379736,131072 /prefetch:8
                      2⤵
                        PID:2832
                    • 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:920
                      • C:\Windows\System32\rundll32.exe
                        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                        1⤵
                          PID:3624
                        • C:\Users\Admin\Desktop\rce-exploit\nimshell.exe
                          "C:\Users\Admin\Desktop\rce-exploit\nimshell.exe"
                          1⤵
                            PID:1076
                            • C:\Windows\SYSTEM32\cmd.exe
                              cmd /c ls
                              2⤵
                                PID:3404
                              • C:\Windows\SYSTEM32\cmd.exe
                                cmd /c dir
                                2⤵
                                  PID:1968
                                • C:\Windows\SYSTEM32\cmd.exe
                                  cmd /c whoami
                                  2⤵
                                    PID:4808
                                    • C:\Windows\system32\whoami.exe
                                      whoami
                                      3⤵
                                      • Suspicious use of AdjustPrivilegeToken
                                      PID:4480
                                  • C:\Windows\SYSTEM32\cmd.exe
                                    cmd /c dir
                                    2⤵
                                      PID:3940
                                    • C:\Windows\SYSTEM32\cmd.exe
                                      cmd /c calc
                                      2⤵
                                        PID:4744
                                        • C:\Windows\system32\calc.exe
                                          calc
                                          3⤵
                                          • Modifies registry class
                                          PID:2700
                                      • C:\Windows\SYSTEM32\cmd.exe
                                        cmd /c echo "You got pwned, bom dia!" >> mypasswords.txt
                                        2⤵
                                          PID:3976
                                        • C:\Windows\SYSTEM32\cmd.exe
                                          cmd /c del *
                                          2⤵
                                            PID:4008
                                          • C:\Windows\SYSTEM32\cmd.exe
                                            cmd /c
                                            2⤵
                                              PID:4168
                                          • C:\Windows\system32\OpenWith.exe
                                            C:\Windows\system32\OpenWith.exe -Embedding
                                            1⤵
                                            • Suspicious use of SetWindowsHookEx
                                            PID:4888
                                          • C:\Windows\system32\NOTEPAD.EXE
                                            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\mypasswords.txt
                                            1⤵
                                            • Opens file in notepad (likely ransom note)
                                            PID:2232
                                          • C:\Users\Admin\Desktop\rce-exploit\nimshell.exe
                                            "C:\Users\Admin\Desktop\rce-exploit\nimshell.exe"
                                            1⤵
                                              PID:4268
                                              • C:\Windows\SYSTEM32\cmd.exe
                                                cmd /c dir
                                                2⤵
                                                  PID:2212
                                                • C:\Windows\SYSTEM32\cmd.exe
                                                  cmd /c del *.*
                                                  2⤵
                                                    PID:1968
                                                  • C:\Windows\SYSTEM32\cmd.exe
                                                    cmd /c
                                                    2⤵
                                                      PID:3360
                                                    • C:\Windows\SYSTEM32\cmd.exe
                                                      cmd /c y
                                                      2⤵
                                                        PID:920
                                                      • C:\Windows\SYSTEM32\cmd.exe
                                                        cmd /c y
                                                        2⤵
                                                          PID:2948
                                                        • C:\Windows\SYSTEM32\cmd.exe
                                                          cmd /c dir
                                                          2⤵
                                                            PID:4504
                                                          • C:\Windows\SYSTEM32\cmd.exe
                                                            cmd /c dir
                                                            2⤵
                                                              PID:1084

                                                          Network

                                                                MITRE ATT&CK Enterprise v15

                                                                Replay Monitor

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                                                                Downloads

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

                                                                  Filesize

                                                                  1KB

                                                                  MD5

                                                                  e26b5c3cf64529cd5fc5ce41ea2a9ada

                                                                  SHA1

                                                                  019ecb856409c7e7f1e19e489b47ce499d245894

                                                                  SHA256

                                                                  8a282a383d3909b64b5706ba81dce41a4d15be2a8b8edac72253cf8628eb671d

                                                                  SHA512

                                                                  4c3b17366e85a7d371dbf2dd180d886ce917a8dc701ca0873b9a4fc0c49c26d9980079fd533eff6800804d72d89b6ff0b733bd103f10ca9a125ac43ceb194693

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

                                                                  Filesize

                                                                  6KB

                                                                  MD5

                                                                  3e606d30efb71e80f9e9d018c8f68b50

                                                                  SHA1

                                                                  3e132e30f8c5f5d5fca58d8348789063f9b8555f

                                                                  SHA256

                                                                  2da4880bf1358d46ac0fce0f1d4d8072e07b523dd61d2bbe7b242f2635b2a2e9

                                                                  SHA512

                                                                  593278a9072ead4e5bc4c913366b7babb7f8271527b50ac1a3edeb50b3de6cc5c41a70f43e68a09d013a155d2d758d779d7f7d8a4e6a2a07161fb1873cd993cc

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

                                                                  Filesize

                                                                  130KB

                                                                  MD5

                                                                  100d266fd8ea918467e88b9573c35f45

                                                                  SHA1

                                                                  9aad616e59e8fe7deab075677722fd0e82026b6f

                                                                  SHA256

                                                                  aa3f038e3165f5d3e871e7cb31b8d2025205b36a111618c8258a2b86d3e0b163

                                                                  SHA512

                                                                  a463cd2c93f05ae83c981c37f0943ee3dd3bd26621356db822467fa1af2567a7591216adf15665468ec732456b59eac0cf389749444963e51c4f486d46b90fe2

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

                                                                  Filesize

                                                                  264KB

                                                                  MD5

                                                                  f50f89a0a91564d0b8a211f8921aa7de

                                                                  SHA1

                                                                  112403a17dd69d5b9018b8cede023cb3b54eab7d

                                                                  SHA256

                                                                  b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                                                  SHA512

                                                                  bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json

                                                                  Filesize

                                                                  2B

                                                                  MD5

                                                                  99914b932bd37a50b983c5e7c90ae93b

                                                                  SHA1

                                                                  bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

                                                                  SHA256

                                                                  44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

                                                                  SHA512

                                                                  27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

                                                                • C:\Users\Admin\Desktop\mypasswords.txt

                                                                  Filesize

                                                                  28B

                                                                  MD5

                                                                  036ace330d16eda016b74b3a2ae5a680

                                                                  SHA1

                                                                  873d1f9b1c4e2abe3ced0bcd09db6d1d6e69239e

                                                                  SHA256

                                                                  17ee3c5189c2b88d1c62d7300edc0f987006a777d091bfa564008bcc0a0fa357

                                                                  SHA512

                                                                  472bae2b30cd74b8cd6a724999ae23f3a6683d01ff6efd937b33aed379268eaec3e026a47a1aa6b09e9294ff9254ff2974f27a645c7753d4546a844d670de048

                                                                • C:\Users\Admin\Downloads\payload.zip.crdownload

                                                                  Filesize

                                                                  4.0MB

                                                                  MD5

                                                                  0b6417144d1a57d90a2ebdfb5022c76a

                                                                  SHA1

                                                                  84b6beed381a698ddca89167fc8e61ad7f00858f

                                                                  SHA256

                                                                  eb0f256088c6111c350bffda595ba84c7cacb38c1cc732be88128c17652cc724

                                                                  SHA512

                                                                  8e66e6e9028e8cd659cbacd29abb99ce862c0b950fd177cef9c221c9baab97fdc3b7453ada746567d6a8d94eefe92d69608a2ac155c1e534dde4d21653525e43

                                                                • memory/1076-110-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/1076-111-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/1076-109-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/1076-117-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/1076-119-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/1076-120-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/1076-121-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/4268-122-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/4268-123-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/4268-124-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB

                                                                • memory/4268-125-0x00007FF6BA7F0000-0x00007FF6BA874000-memory.dmp

                                                                  Filesize

                                                                  528KB