Analysis

  • max time kernel
    163s
  • max time network
    160s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09-08-2024 10:03

General

  • Target

    source/mbr.exe

  • Size

    1.3MB

  • MD5

    35af6068d91ba1cc6ce21b461f242f94

  • SHA1

    cb054789ff03aa1617a6f5741ad53e4598184ffa

  • SHA256

    9ac99df89c676a55b48de00384506f4c232c75956b1e465f7fe437266002655e

  • SHA512

    136e3066c6e44af30691bcd76d9af304af0edf69f350211cf74d6713c4c952817a551757194b71c3b49ac3f87a6f0aa88fb80eb1e770d0f0dd82b29bfce80169

  • SSDEEP

    24576:LT3LlvRiQNGYXCI+b1w30WgvZef6YhuQ5O3h3JMtbu:7XNGDIu8NyMtbu

Malware Config

Signatures

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Windows directory 4 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • 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
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\source\mbr.exe
    "C:\Users\Admin\AppData\Local\Temp\source\mbr.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    PID:224
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Drops file in Windows directory
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3840
    • 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:4 --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=123.0.6312.123 --initial-client-data=0xfc,0x100,0x104,0xe4,0x108,0x7ffab1aacc40,0x7ffab1aacc4c,0x7ffab1aacc58
      2⤵
        PID:4868
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1780,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=1776 /prefetch:2
        2⤵
          PID:5108
        • 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 --no-appcompat-clear --field-trial-handle=2112,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=2124 /prefetch:3
          2⤵
            PID:2908
          • 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=service --no-appcompat-clear --field-trial-handle=2212,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=2180 /prefetch:8
            2⤵
              PID:4536
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3128,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=3180 /prefetch:1
              2⤵
                PID:4972
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3184,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=3320 /prefetch:1
                2⤵
                  PID:4524
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=3560,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=4524 /prefetch:1
                  2⤵
                    PID:2656
                  • 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 --no-appcompat-clear --field-trial-handle=4880,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=4888 /prefetch:8
                    2⤵
                      PID:872
                    • C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\setup.exe
                      "C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\setup.exe" --reenable-autoupdates --system-level
                      2⤵
                      • Drops file in Windows directory
                      PID:1760
                      • C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\setup.exe
                        "C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\SystemTemp\Crashpad --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x244,0x248,0x24c,0x220,0x250,0x7ff6097e4698,0x7ff6097e46a4,0x7ff6097e46b0
                        3⤵
                        • Drops file in Windows directory
                        PID:2784
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4384,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=4500 /prefetch:8
                      2⤵
                        PID:4488
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --field-trial-handle=5068,i,4209621761383751777,15490445294272051085,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=5096 /prefetch:1
                        2⤵
                          PID:4896
                      • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                        1⤵
                          PID:1632
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:3960

                          Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000002

                            Filesize

                            117KB

                            MD5

                            1c14485e6513c994af246659adc5b70c

                            SHA1

                            71a50325198ce95d67eb4b89b78d5a3727665e4d

                            SHA256

                            d2fa85aaba46d9e7a8af32ce380ed30f0fe2e5c081cef3674a3d1fe21584885f

                            SHA512

                            3153b61c27e664939ec64394c9cdf244adb6b773a3c413e93a7a38460c8cd48e53ad4c953b6862f03997be05757552ed3ecb9e94376bd836bb1757219d641d27

                          • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_00000a

                            Filesize

                            30KB

                            MD5

                            fb9e07206be3e46de64694c655e2ce0f

                            SHA1

                            71e903877880cac4c4db940a356d55b3e5e4b2e2

                            SHA256

                            317bc7e789e17191dbb12502a0179585a309fc3791284d949184d23e846bb1ec

                            SHA512

                            181a2bf9e0dfb636b6d183e0fab04059a10aa8c2e5326f75f03c4d83224b8a0f31c5b7c53ddf60852b95ceae56bbe5d7f8a72dc8381c7a640deee7a1e763ee74

                          • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_00000b

                            Filesize

                            350KB

                            MD5

                            479a06091d849c1bbaf3dfdd80dca95f

                            SHA1

                            4739c99ac2f2f91508e0a792a22c9af1b4d1f996

                            SHA256

                            f172b25397fe36d2aa4402535ef06b6d4bed4bce3e651c796d4876011964661e

                            SHA512

                            7089dbd90ce0f7475312fd4c82feb458f16053a818e040417cda4b312cc32e86dc6643dda7d1f186b81261df3f2ed2419556558ea6dfdc14ce8db7840f9d8c60

                          • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_00000c

                            Filesize

                            42KB

                            MD5

                            3418f7168ba9caec47128bd78e3b4e57

                            SHA1

                            2d57b2b35c552fd34a0c4b124e5e5c3130ee3b10

                            SHA256

                            351bf864615f4ac840dc826607ce2467ba9dc7178fd0f8024b5ed8691b0f1d05

                            SHA512

                            b83310c8fbb02b84675dd944331d7f98d60f868b7b85853eea2e8ca3e99edd50a6358ad33052af29030bae4a3659157668cac6179d815f18ba359f6d035493e3

                          • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index

                            Filesize

                            384B

                            MD5

                            569b85ff2e9393c6aaaed929541e6099

                            SHA1

                            619c7ee60466cbf986c5386fc9d5b483851b7f39

                            SHA256

                            ec6c58f5999d80af6b13e43da7916da1562786befc9161de03420b7dce4180ae

                            SHA512

                            c688a3bf4b52f0022756eadb3b530b5b20028adfca2e4e4997bffc42ba490096131c44ca9e048f60a3e7f8ce93d402ea4fbe836371f31f8fd3bd3769ef74d879

                          • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                            Filesize

                            2B

                            MD5

                            d751713988987e9331980363e24189ce

                            SHA1

                            97d170e1550eee4afc0af065b78cda302a97674c

                            SHA256

                            4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                            SHA512

                            b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

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

                            Filesize

                            354B

                            MD5

                            732f919ea4c81a625f9995a82af27e4c

                            SHA1

                            f82cd57144c168bdcb8a1270cd0015171a3797fa

                            SHA256

                            53f042a0f00d35f62672906152e9ffb99538e5dd0e0a2a0d2f2c45bb4aa5e5de

                            SHA512

                            219ff053e9ce74205c1a37049bfb54be529cf6abee7e6a3f7e054e393c00f48c5d968cd4d6668ee123c841684e7f04f91240c6536b06432c9731bd2abcfaedfc

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

                            Filesize

                            9KB

                            MD5

                            2f9652cd71c4d2d506045dbf2d0ceb19

                            SHA1

                            6cf460d08683970f253889c764670e4dca2cee08

                            SHA256

                            a1fbf6b95fb4a39786b107903387f3a20fae812d4439f6f551b220e9b1900cc5

                            SHA512

                            b092a947a77c6dc7cd15bca29c0200113bc08c09a6f4b73395643ab5f1274240e4c643b8e490c51a410bd066a250815326795eece69a5174e4d78a98b074e80d

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

                            Filesize

                            9KB

                            MD5

                            6da850a6833a0e3856aa78bf66b0ee6c

                            SHA1

                            a66444b50d188d2d4a72aead9d2aef4e3c776628

                            SHA256

                            ce277cdf196e373d17b7b9dbc1a9104d903848a3e184fe66ebe631a23b16255f

                            SHA512

                            0428e5809378fa0945df9b99b9548c82985665e03ee566c619625a1b96ad5c73df7570d781aba4dbb089c2e6404a53c02b75046bb540685b82ee32c8477fbc3e

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

                            Filesize

                            9KB

                            MD5

                            7a2ef5d8a47f21cfd2a2bf209884b494

                            SHA1

                            3ef035fcacd86c8ab22ad10aefb29da1642b37df

                            SHA256

                            51f508c5423b4a9907b0502539fd4077f866181052b20254328409470b807c60

                            SHA512

                            f79bd6a53aecdd6615e0764a7cbab1350d83ee36b0017c5322b6145b1e24c5841659dd30de0b001a3978e9ca807a2e3018d19ade27a66937e44255bd872d18e6

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

                            Filesize

                            9KB

                            MD5

                            1b9597631d4f10adee5156cb08c7c164

                            SHA1

                            f606e6be378a95fefdd5f14c6d4a37397db2480d

                            SHA256

                            9ef4071ae541d7b18a78b7d90328c0c5523a6f25ab5ac9eacf1f6630fcbcd016

                            SHA512

                            d8c38ba0c4a122175cab4ca01d198b11bf83a54cdf04a17f8539bf8dd5d799ce526d07055091fa61b31bb30af9c43dd94ab50318457e8b5db8e215a23b011a3c

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

                            Filesize

                            15KB

                            MD5

                            1e49a52ca3bd0deb7c1167698ca4cde0

                            SHA1

                            827cda383fe93e49a97ef779221beb6373bcb0be

                            SHA256

                            c9aa2187196c865184eabfa4ed6cbefebbebfdc04de706de5d0b459d19f1772d

                            SHA512

                            cf4e7cb4d09a8e85dd6217489912feeb7896dcc2262a1d89f884c7eed2aeb2f60187d8cbc9587ea4c74bdb9c856f8137e02f91c8c170e838284fedfc5e6c6279

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

                            Filesize

                            193KB

                            MD5

                            b6dc622f3af8a95ccb062987a0804efc

                            SHA1

                            430b8412c6cf6e21e14250e84c2197d1e8de36eb

                            SHA256

                            638d68a9a088d6427cb6bf1b6b793b72d87fb9602bbabf064ca0a9ee6a31d13c

                            SHA512

                            a7e9c9f1f87caa870fb47d939feda52cdd063562bc15c7d07cab6bb6fcc46e868d504f0edc2f554f570c1b33eba50fc12ba6dd4d33f2bcdb671b0bfc4feb5fc6

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

                            Filesize

                            193KB

                            MD5

                            1aa27a8a1a5e029c7ffb3f50cf88b4cd

                            SHA1

                            4a0a52134f4cbce788b206f3567e1ce5cc9b550a

                            SHA256

                            7277c53d118af963f3cf32e14a2910228f172cdcf3268aeccfb40484b65a02eb

                            SHA512

                            d7602b054905ecb93cc9145afe134ade958ee246b393762bbdccea5a9aa30b4e185465614ecd53e5a1a9a7f3f8ef8cde628e3f70ab95b9f3e15eb769f7d2cb1a

                          • C:\Users\Admin\AppData\Roaming\Microsoft\Spelling\en-US\default.dic

                            Filesize

                            2B

                            MD5

                            f3b25701fe362ec84616a93a45ce9998

                            SHA1

                            d62636d8caec13f04e28442a0a6fa1afeb024bbb

                            SHA256

                            b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                            SHA512

                            98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                          • memory/224-0-0x0000000000400000-0x00000000004D8000-memory.dmp

                            Filesize

                            864KB