Analysis

  • max time kernel
    1688s
  • max time network
    1693s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/04/2024, 16:48

General

  • Target
    $R0/Uninstall Lunar Client.exe
  • Size 404KB
  • Sample240416-vbk4dsgg9w
  • SHA256 bafcf2b563e935de1c9d2d55413d25b9a06a8ee8b4cdab49ba7bfe0bfb5c668a
  • MD5 SHA1 SHA512 SSDEEP
Score
4/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Lunar Client.exe
    "C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Lunar Client.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3860
    • C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
      "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\$R0\
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq Lunar Client.exe" | %SYSTEMROOT%\System32\find.exe "Lunar Client.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4984
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq Lunar Client.exe"
          4⤵
          • Enumerates processes with tasklist
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2552
        • C:\Windows\SysWOW64\find.exe
          C:\Windows\System32\find.exe "Lunar Client.exe"
          4⤵
            PID:2376
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://lunarclient.com/uninstaller/?installId=unknown
          3⤵
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:3760
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=90.0.4430.212 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=90.0.818.66 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7ffaae943cb8,0x7ffaae943cc8,0x7ffaae943cd8
            4⤵
              PID:4088
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1852 /prefetch:2
              4⤵
                PID:3424
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2372 /prefetch:3
                4⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:3064
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2656 /prefetch:8
                4⤵
                  PID:1100
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3296 /prefetch:1
                  4⤵
                    PID:4444
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3372 /prefetch:1
                    4⤵
                      PID:2424
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5280 /prefetch:1
                      4⤵
                        PID:3060
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4948 /prefetch:1
                        4⤵
                          PID:2616
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5604 /prefetch:1
                          4⤵
                            PID:2160
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4700 /prefetch:1
                            4⤵
                              PID:3196
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5420 /prefetch:1
                              4⤵
                                PID:3976
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5460 /prefetch:1
                                4⤵
                                  PID:4972
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4716 /prefetch:8
                                  4⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:2516
                                • C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6004 /prefetch:8
                                  4⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:964
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1920,8016836666346921072,11571420489032444852,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.22000.1 --gpu-preferences=SAAAAAAAAADoAAAwAAAAAAAAAAAAAAAAAABgAAAQAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=3952 /prefetch:2
                                  4⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:628
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:3976
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:2408

                              Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    settings.dat

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                    • Size 152B
                                    • SHA256 5dfe9be21d4916615025055f1a70151362bdb404b40f074685e39b33ad545a78
                                    • MD5 SHA1 SHA512

                                    settings.dat

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                    • Size 152B
                                    • SHA256 1eb39b1409ce78188c133089bf3660393ac043b5baade7ff322df5a0ca95380b
                                    • MD5 SHA1 SHA512

                                    the-real-index

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index
                                    • Size 648B
                                    • SHA256 989995e08144a3df41cc2dc87a00095b6a887e9cf4b2f5f058cde7f3fa36bb3a
                                    • MD5 SHA1 SHA512

                                    Network Persistent State

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                    • Size 2KB
                                    • SHA256 b8d752cdac0893500ab7163ddd68ab7aab644f706de6516d51a05a14d22fe154
                                    • MD5 SHA1 SHA512

                                    Preferences

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                    • Size 5KB
                                    • SHA256 c2aecdc03e3eb45ad7253a6623c6f6e0bd9e46a67033c304af1ac6c5ee6e7fcc
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Preferences

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                    • Size 6KB
                                    • SHA256 2820594beac141198b25cb8c9113df0919fd6e247f8db4039e4de46a99155833
                                    • MD5 SHA1 SHA512 SSDEEP

                                    CURRENT

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                    • Size 16B
                                    • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                                    • MD5 SHA1 SHA512

                                    CURRENT

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                    • Size 16B
                                    • SHA256 1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167
                                    • MD5 SHA1 SHA512

                                    Local State

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                    • Size 11KB
                                    • SHA256 d225705b73abdcccd9f9f1087c29dde889a9564fe1019239c53ed3dcd9fb4d57
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Local State

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                    • Size 11KB
                                    • SHA256 c13747c2da1b12f9b276d4ddc08d6ee0273d15f343dff185ae8ba344cd1834d7
                                    • MD5 SHA1 SHA512 SSDEEP

                                    StdUtils.dll

                                    • Path C:\Users\Admin\AppData\Local\Temp\nsm7281.tmp\StdUtils.dll
                                    • Size 100KB
                                    • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
                                    • MD5 SHA1 SHA512 SSDEEP

                                    System.dll

                                    • Path C:\Users\Admin\AppData\Local\Temp\nsm7281.tmp\System.dll
                                    • Size 12KB
                                    • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
                                    • MD5 SHA1 SHA512 SSDEEP

                                    WinShell.dll

                                    • Path C:\Users\Admin\AppData\Local\Temp\nsm7281.tmp\WinShell.dll
                                    • Size 3KB
                                    • SHA256 9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6
                                    • MD5 SHA1 SHA512

                                    nsExec.dll

                                    • Path C:\Users\Admin\AppData\Local\Temp\nsm7281.tmp\nsExec.dll
                                    • Size 6KB
                                    • SHA256 5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Un_A.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
                                    • Size 404KB
                                    • SHA256 bafcf2b563e935de1c9d2d55413d25b9a06a8ee8b4cdab49ba7bfe0bfb5c668a
                                    • MD5 SHA1 SHA512 SSDEEP