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Analysis

  • max time kernel
    62s
  • max time network
    64s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    06/08/2024, 05:16

General

  • Target

    https://raw.githubusercontent.com/cmd-softworks/solara/main/Bootstrapper.exe

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
  • Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 1 IoCs

    When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 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
  • NTFS ADS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 36 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://raw.githubusercontent.com/cmd-softworks/solara/main/Bootstrapper.exe
    1⤵
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3148
    • 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,0x7ffed68b3cb8,0x7ffed68b3cc8,0x7ffed68b3cd8
      2⤵
        PID:3244
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1920 /prefetch:2
        2⤵
          PID:3704
        • 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=1924,4452103782137756922,16359131992845854612,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2320 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1976
        • 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=1924,4452103782137756922,16359131992845854612,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2560 /prefetch:8
          2⤵
            PID:4280
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --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=3144 /prefetch:1
            2⤵
              PID:1164
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --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=3244 /prefetch:1
              2⤵
                PID:1448
              • 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=1924,4452103782137756922,16359131992845854612,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5208 /prefetch:8
                2⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:3692
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --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=5288 /prefetch:1
                2⤵
                  PID:4452
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --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=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5392 /prefetch:1
                  2⤵
                    PID:2284
                  • 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=1924,4452103782137756922,16359131992845854612,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3396 /prefetch:8
                    2⤵
                    • Suspicious behavior: EnumeratesProcesses
                    PID:3320
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --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=5668 /prefetch:1
                    2⤵
                      PID:4216
                    • 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.UtilReadIcon --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5920 /prefetch:8
                      2⤵
                        PID:4272
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3972 /prefetch:1
                        2⤵
                          PID:1000
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --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=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6016 /prefetch:1
                          2⤵
                            PID:1524
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=1924,4452103782137756922,16359131992845854612,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2100 /prefetch:8
                            2⤵
                            • Subvert Trust Controls: Mark-of-the-Web Bypass
                            • NTFS ADS
                            • Suspicious behavior: EnumeratesProcesses
                            PID:2156
                          • C:\Users\Admin\Downloads\Bootstrapper.exe
                            "C:\Users\Admin\Downloads\Bootstrapper.exe"
                            2⤵
                            • Executes dropped EXE
                            • System Location Discovery: System Language Discovery
                            • Suspicious use of AdjustPrivilegeToken
                            PID:4400
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 1756
                              3⤵
                              • Program crash
                              PID:2888
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:4656
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:3204
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4400 -ip 4400
                              1⤵
                                PID:2080

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

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                              Downloads

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                Filesize

                                152B

                                MD5

                                d30a5618854b9da7bcfc03aeb0a594c4

                                SHA1

                                7f37105d7e5b1ecb270726915956c2271116eab7

                                SHA256

                                3494c446aa3cb038f1d920b26910b7fe1f4286db78cb3f203ad02cb93889c1a8

                                SHA512

                                efd488fcd1729017a596ddd2950bff07d5a11140cba56ff8e0c62ef62827b35c22857bc4f5f5ea11ccc2e1394c0b3ee8651df62a25e66710f320e7a2cf4d1a77

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                Filesize

                                152B

                                MD5

                                03a56f81ee69dd9727832df26709a1c9

                                SHA1

                                ab6754cc9ebd922ef3c37b7e84ff20e250cfde3b

                                SHA256

                                65d97e83b315d9140f3922b278d08352809f955e2a714fedfaea6283a5300e53

                                SHA512

                                e9915f11e74c1bcf7f80d1bcdc8175df820af30f223a17c0fe11b6808e5a400550dcbe59b64346b7741c7c77735abefaf2c988753e11d086000522a05a0f7781

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                                Filesize

                                193B

                                MD5

                                62fc8758c85fb0d08cd24eeddafeda2c

                                SHA1

                                320fc202790b0ca6f65ff67e9397440c7d97eb20

                                SHA256

                                ee0d15dce841e092ad1a2d4346a612410f8f950fdb019bc7b768f6346f2b5248

                                SHA512

                                ca97e615bdcac137a936c10104a702e1529ed3470828f2c3a2f783345ebbef04cac8c051df636c714151671efea53a9b8912b6b0d0b5eafdac5fae1dfdc8f85d

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                Filesize

                                5KB

                                MD5

                                49048d08a5bb60fd110e7c72862cc974

                                SHA1

                                1f6f56b08d5f38201c750c455269a9e6e59e2fe4

                                SHA256

                                eaf7ed450522dc3341c5a175fa0edc64a3e66043af11806fb9ae320452d4ea81

                                SHA512

                                97cb90ccda909111e032b0df86df7f2200e102698d5dd204455c3faf1b1cb4424030c08cef7983d39be6e174bf132c365df2c7cbd86b5bba22535e5d1989331f

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                Filesize

                                5KB

                                MD5

                                48c9e1fc2dd9d905ff57c1aa78e1f821

                                SHA1

                                a4310fba7daf37141f2d55816624d7156db2e713

                                SHA256

                                a2c49b934e0feb77812ecd92f0b36a91054566963a7c9c884bc8927405dd60ef

                                SHA512

                                9cd799de6f6fe238f23fdff50c1ceb77235e6b70c3bd86ea1c02041ee066615c63aa05e8a9874c265ededb435c050e338e3bae0179bf389a459faa7259113cdc

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                Filesize

                                5KB

                                MD5

                                e94a281cd156e2c7c1ad3e9bd17520ab

                                SHA1

                                73d344ecfc098d65f64e33ae8b4ef63c237ac104

                                SHA256

                                19ce957514d8a04a0193fd6c339eb8ebfaff9fd5601632b3de091ef5c8afef2a

                                SHA512

                                cd7bfb8d6e4da5de9634a7e0609e42060470947f5cfa9d59250de95a622db5c13243db0a776d85e73064b377723f8e2b8504b4f1c771380e96477be0517098ab

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                Filesize

                                16B

                                MD5

                                46295cac801e5d4857d09837238a6394

                                SHA1

                                44e0fa1b517dbf802b18faf0785eeea6ac51594b

                                SHA256

                                0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

                                SHA512

                                8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                Filesize

                                16B

                                MD5

                                206702161f94c5cd39fadd03f4014d98

                                SHA1

                                bd8bfc144fb5326d21bd1531523d9fb50e1b600a

                                SHA256

                                1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167

                                SHA512

                                0af09f26941b11991c750d1a2b525c39a8970900e98cba96fd1b55dbf93fee79e18b8aab258f48b4f7bda40d059629bc7770d84371235cdb1352a4f17f80e145

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                Filesize

                                11KB

                                MD5

                                417d14cf92047dc3f39f89928cc650db

                                SHA1

                                5428af052d86116c18c625465c8b0ebd3b6160d4

                                SHA256

                                f777af2e6afa469f6fdc4eeec53141f1c770ac1a0722f2f9527d5c5fe698362d

                                SHA512

                                13f374f9ec54c5d92f80996ae8a8d73308fdcb94362aac9ad7cdcbc371ff211c1c6a29924968ac12f2084e1589b3ba6cf62d9648388851ba3bc62a580b2670dc

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                Filesize

                                11KB

                                MD5

                                28a3c579d59859dc664a6ff83999592d

                                SHA1

                                1e06fde10ca9c85effb51b1129b765899fdca7cc

                                SHA256

                                6c828f85a0c238ebd470355318d3413faa069a638f0e66cd8e482617e4ea857a

                                SHA512

                                54bcce88ba938c2b2a605130c8ebf4baa5319fc8efa01723714f0b472a00b358a3ea6ab4427155f27bfd172daf2d79bb84e6f4f3a2c89718dbb55576d45ea470

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                Filesize

                                11KB

                                MD5

                                0feee97ee544780babea1c914570ffb2

                                SHA1

                                4f757f0183f4a3d70a826bc0dbbad691dc5ca5e5

                                SHA256

                                d529d96d876c7ec745ac90a5dc035aa163e8cc2161b805e104378e8bda52b444

                                SHA512

                                ab47e9c48d5a1a924b2e6517fe4be65128b6ebb2a06c34bddae2d8d165720085f7aeee1514b2db523d6926c7fa5f8d6f48b10859a003d2f4adf09806f36b122a

                              • C:\Users\Admin\Downloads\Bootstrapper.exe:Zone.Identifier

                                Filesize

                                112B

                                MD5

                                655ead854a6b0253876fa12f2e388fcf

                                SHA1

                                d791bf5b7332ca4b4e3549f60802a303d4fd7353

                                SHA256

                                38af609a657ce0118915029f9f23a8afca4b980814dad251c626ee7bce6d658f

                                SHA512

                                17aa75234131fd58da07f4120030708c92bffe861a5fd15e3cdfa0b80d9715758b8e8dd32b1c9c7fc3b834f353400bbccf7aacd8953c759a5f8fe0b7ae2d20fa

                              • C:\Users\Admin\Downloads\Unconfirmed 590603.crdownload

                                Filesize

                                796KB

                                MD5

                                fa65805dc79caefec703e1339141fc65

                                SHA1

                                9f2480739aac09dcf254d87f5f63deaea8296404

                                SHA256

                                d122b76e0739d706b0c3078136fd05d55e92b09dca92864c66b428fa8c0da748

                                SHA512

                                b2fd9027cf118727dc5688912a0909403afede90a6efcb5e616dcca575753b82a85ba48f3d08b63148f5c5795d1af35f69803dde2fef358f94dd367ec55f1b63

                              • memory/4400-103-0x0000000000230000-0x00000000002FE000-memory.dmp

                                Filesize

                                824KB