Analysis

  • max time kernel
    1701s
  • max time network
    1708s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 06:59

General

  • Target
    $R0/Uninstall Lunar Client.exe
  • Size 404KB
  • Sample240127-hr77msfdc2
  • SHA256 9f621a0c31cc8143f4fe6fef3fd5a50db4066f91422c64dd0df1b0f713929382
  • MD5 SHA1 SHA512 SSDEEP
Score
5/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 14 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 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:3756
    • 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⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1512
      • 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:2160
        • 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:636
        • C:\Windows\SysWOW64\find.exe
          C:\Windows\System32\find.exe "Lunar Client.exe"
          4⤵
            PID:4992
        • 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:3272
          • 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=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x100,0x104,0x108,0xd8,0x10c,0x7ffa733d46f8,0x7ffa733d4708,0x7ffa733d4718
            4⤵
              PID:4100
            • 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=2104,4972276301558343194,4288666267268704944,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2176 /prefetch:3
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:2876
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2116 /prefetch:2
              4⤵
                PID:4940
              • 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=2104,4972276301558343194,4288666267268704944,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2744 /prefetch:8
                4⤵
                  PID:1540
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=3348 /prefetch:1
                  4⤵
                    PID:4972
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=3368 /prefetch:1
                    4⤵
                      PID:5064
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=4136 /prefetch:1
                      4⤵
                        PID:5012
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=3728 /prefetch:1
                        4⤵
                          PID:1772
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=5596 /prefetch:1
                          4⤵
                            PID:3776
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=5560 /prefetch:1
                            4⤵
                              PID:3568
                            • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5164 /prefetch:8
                              4⤵
                                PID:536
                              • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5164 /prefetch:8
                                4⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:972
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5312 /prefetch:1
                                4⤵
                                  PID:2828
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5064 /prefetch:1
                                  4⤵
                                    PID:2864
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2104,4972276301558343194,4288666267268704944,131072 --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=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=5856 /prefetch:2
                                    4⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:3664
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:5048
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:3864

                                Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      settings.dat

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                      • Size 152B
                                      • SHA256 7af7b56e2f0a84ae008785726f3404eb9001baa4b5531d0d618c6bdcb05a3a7a
                                      • 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 624B
                                      • SHA256 7063faff7d479622bc9ef3b2865207f82564d676b949682a847e5513f7fbd60c
                                      • MD5 SHA1 SHA512

                                      Network Persistent State

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                      • Size 111B
                                      • SHA256 5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026
                                      • MD5 SHA1 SHA512

                                      Network Persistent State

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                      • Size 2KB
                                      • SHA256 024272ba8274810636a1b844296fc51e9c20454d2deb2a8899336c8eb8ff502b
                                      • MD5 SHA1 SHA512

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                      • Size 6KB
                                      • SHA256 6e31a5b5d8d637cf0b3109372967d36a47ee85c31d15713c07b7aa9fa4371a41
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                      • Size 5KB
                                      • SHA256 ce3da9bd92609d9c51153dfaeb7406ee25be090a6bf3a617ea17183a5ea58a8f
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Secure Preferences

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Secure Preferences
                                      • Size 24KB
                                      • SHA256 cf5d26bc399d0200a32080741e12f77d784a3117e6d58e07106e913f257aa46c
                                      • MD5 SHA1 SHA512 SSDEEP

                                      CURRENT

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                      • Size 16B
                                      • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                      • MD5 SHA1 SHA512

                                      Local State

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                      • Size 10KB
                                      • SHA256 8fa494c779da55e98c284331036860627d4d0121d6037918491ac9ec4bbd02ce
                                      • MD5 SHA1 SHA512 SSDEEP

                                      StdUtils.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\nshE4A4.tmp\StdUtils.dll
                                      • Size 100KB
                                      • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
                                      • MD5 SHA1 SHA512 SSDEEP

                                      System.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\nshE4A4.tmp\System.dll
                                      • Size 12KB
                                      • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
                                      • MD5 SHA1 SHA512 SSDEEP

                                      WinShell.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\nshE4A4.tmp\WinShell.dll
                                      • Size 3KB
                                      • SHA256 9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6
                                      • MD5 SHA1 SHA512

                                      nsExec.dll

                                      • Path C:\Users\Admin\AppData\Local\Temp\nshE4A4.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 9f621a0c31cc8143f4fe6fef3fd5a50db4066f91422c64dd0df1b0f713929382
                                      • MD5 SHA1 SHA512 SSDEEP