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Resubmissions

22/03/2023, 16:00

230322-tfrajahg86 1

22/03/2023, 15:46

230322-s7v75ahf96 6

Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/03/2023, 16:00

General

  • Target

    https://www.dropbox.com/scl/fi/l5x5n1z6wm1pauhcqsy3j/Type-something-to-get-started.paper?dl=0&rlkey=m8e5pjwmge2ptjzp6ak859aq6

Score
1/10

Malware Config

Signatures

  • Checks processor information in registry 2 TTPs 8 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 41 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" https://www.dropbox.com/scl/fi/l5x5n1z6wm1pauhcqsy3j/Type-something-to-get-started.paper?dl=0&rlkey=m8e5pjwmge2ptjzp6ak859aq6
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:960
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:960 CREDAT:17410 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:4648
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2740
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3556
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.0.1722449504\2119274379" -parentBuildID 20221007134813 -prefsHandle 1820 -prefMapHandle 1812 -prefsLen 20890 -prefMapSize 232675 -appDir "C:\Program Files\Mozilla Firefox\browser" - {9197fe37-a862-4abb-a612-9fbe18291d7c} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 1900 27b246a6d58 gpu
        3⤵
          PID:1804
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.1.481357521\270462182" -parentBuildID 20221007134813 -prefsHandle 2288 -prefMapHandle 2284 -prefsLen 20926 -prefMapSize 232675 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {bd006a85-d575-48b0-851c-cbb43c0f40c8} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 2300 27b16671f58 socket
          3⤵
          • Checks processor information in registry
          PID:3808
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.2.13830643\1811608089" -childID 1 -isForBrowser -prefsHandle 2928 -prefMapHandle 2944 -prefsLen 21074 -prefMapSize 232675 -jsInitHandle 1476 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {aab9a113-d359-4096-b994-23904a41c8ba} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 2788 27b272fa758 tab
          3⤵
            PID:2516
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.3.1477141197\1978121576" -childID 2 -isForBrowser -prefsHandle 3892 -prefMapHandle 3896 -prefsLen 26519 -prefMapSize 232675 -jsInitHandle 1476 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {d043f641-9f9e-4ea8-86ea-4358651cad88} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 3920 27b16662858 tab
            3⤵
              PID:3948
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.4.956838898\1640165275" -childID 3 -isForBrowser -prefsHandle 4128 -prefMapHandle 4132 -prefsLen 26519 -prefMapSize 232675 -jsInitHandle 1476 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {db88fb78-e70c-4209-abe5-a9f753ff7b85} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 4120 27b16661658 tab
              3⤵
                PID:4612
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.5.1101214398\320532484" -childID 4 -isForBrowser -prefsHandle 4912 -prefMapHandle 4936 -prefsLen 26578 -prefMapSize 232675 -jsInitHandle 1476 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {4a6309c9-52c6-4c91-90f2-24f2fb1f23e7} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 4924 27b29a45158 tab
                3⤵
                  PID:1676
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.7.347973475\1802913623" -childID 6 -isForBrowser -prefsHandle 5276 -prefMapHandle 5280 -prefsLen 26578 -prefMapSize 232675 -jsInitHandle 1476 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {4d0340cf-dbde-4e0d-b49e-26fc9abe818e} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 5268 27b29a47858 tab
                  3⤵
                    PID:4564
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3556.6.1103750365\1731273578" -childID 5 -isForBrowser -prefsHandle 5068 -prefMapHandle 5072 -prefsLen 26578 -prefMapSize 232675 -jsInitHandle 1476 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {5ed62fea-4d09-430d-baed-c37e08be91d0} 3556 "\\.\pipe\gecko-crash-server-pipe.3556" 4932 27b29a46358 tab
                    3⤵
                      PID:4916

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\cz9baam\imagestore.dat

                  Filesize

                  881B

                  MD5

                  c685121b83cdc4b9640ae0d937f4ff4b

                  SHA1

                  b73e463154fe8dca79cf521b7bae3de136254a78

                  SHA256

                  5b45e1332f848aaf7725e01d5cefcdf03106ca5b2d004678825e9495995fa027

                  SHA512

                  f8edd78dd82dc81909a29ec7ef134566e1148ec533e1b00693c33034a20e8ca96f17661a32d879152337a503dc5364f600b9152e1f4658ae1189b9100a2f5cc0

                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RP56V4OA\OpenSans-Bold-webfont[1].ttf

                  Filesize

                  162KB

                  MD5

                  b0dbbe03fa8b4030610973e2fea5d232

                  SHA1

                  fdc8bae8ce8d311d410c520a1364f6af3067694e

                  SHA256

                  b6ce56ee32c81ddff0f724f95bf0347f9e7a886496beddbcc8f3cd2fa7042971

                  SHA512

                  a6221daedd953d3b71544bdb1d9977b475863eb8a86216e88e9a4c8efb9bde7e9caa43295308d7c8de1561eac9a2424e7a6527d127a8bc382035af5565e437c4

                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RP56V4OA\OpenSans-Light-webfont[1].ttf

                  Filesize

                  156KB

                  MD5

                  b202959a841a37b5bfb12fe69b6bf0d1

                  SHA1

                  7d93db5cd86efd91cfb9c61ff66b210d049d5014

                  SHA256

                  01e40ebaa4275bc99729d90b4ea47b977b88b8d734850eae816b9037a32c825a

                  SHA512

                  cb9cc946a7284cb29658ddf9b1000f4ca9c36dcf65d25ff93e58a664f59cec6659fdfd60b68e7b3933534c6ff9071ac3893b4dcfdc9c54a758d8c7ec7c80b360

                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RPW4GWWI\OpenSans-Regular-webfont[1].ttf

                  Filesize

                  160KB

                  MD5

                  3cbf4d3ed22e458af0d14d76cb4777d3

                  SHA1

                  8571ae75f6dbb4055ec2b61d4dabd03b38e03764

                  SHA256

                  ab6dda86c87f61e7ad1af2e733e04ca83fdcd43edbd57f88e35acc1878078223

                  SHA512

                  51e6c58dff331d5c3e16f327a7b0bc5b5578980e47bb3ea072678fbd8a695a7559c283e4c7c3a623470ff811dfdbd37c83ef0c5ac72b2b9c9b60dc7d60621fb3

                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RPW4GWWI\OpenSans-Semibold-webfont[1].ttf

                  Filesize

                  38KB

                  MD5

                  b32acea6fd3c228b5059042c7ad21c55

                  SHA1

                  0b72db51c3db686963fdc5e8c05b92645d0161b5

                  SHA256

                  9f8567ea7c2d954377d5a3c26bdaf666ff993dd6a2d4e7e6931917a0286514a2

                  SHA512

                  95772dc94425e7801c90b4f98ff069f2c423fa86d096b5043d0cc8b3b43935b9da12eea00d0894706ff0c7bc522b5ea62528f591a0297bcde20c5b6efb00b019

                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RUOQG7D6\error[1].css

                  Filesize

                  39KB

                  MD5

                  88b097b205e9e375871af5b3794601e4

                  SHA1

                  e9f39259db44649e8d5c82be62036de7f4360fb7

                  SHA256

                  c117fa946c4fc49b9f2d4ad50139d6fcacfa3cfc07cc26ad70a2369061bb701c

                  SHA512

                  db3d1d2c9a89d4bf8ece11ae66480fab76dadb34fad72149b56b464036144754fbef6e958e9ac8e188ab4f526e0ca78a8c8b22437bbbb7e2bb2c94e91ef124b5

                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RUOQG7D6\favicon-16x16[1].png

                  Filesize

                  695B

                  MD5

                  7fc6324199de70f7cb355c77347f0e1a

                  SHA1

                  d94d173f3f5140c1754c16ac29361ac1968ba8e2

                  SHA256

                  97d4556f7e8364fb3e0f0ccf58ab6614af002dfca4fe241095cf645a71df0949

                  SHA512

                  09f44601fa449b1608eb3d338b68ea9fd5540f66ea4f3f21534e9a757355a6133ae8fb9b4544f943ca5c504e45a3431bf3f3d24de2302d0439d8a13a0f2d544f

                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RUOQG7D6\suggestions[1].en-US

                  Filesize

                  17KB

                  MD5

                  5a34cb996293fde2cb7a4ac89587393a

                  SHA1

                  3c96c993500690d1a77873cd62bc639b3a10653f

                  SHA256

                  c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

                  SHA512

                  e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bozzcyfh.default-release\prefs-1.js

                  Filesize

                  6KB

                  MD5

                  d6bb0656f494a140abb9be06fa41473f

                  SHA1

                  6c00486fb91cfd326062eb958d45bddabd93ab91

                  SHA256

                  cd076309eef1a1667b82b43e66118c9f4f5151062c0427934877c1ac9ba95039

                  SHA512

                  120231de03d43c192fa4883bcfa36133ca874e923426af73dffc9d858c5df000a567d84259436649197ea19d0f718ac7a73a80be917967eb695a284f83642f7e

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bozzcyfh.default-release\prefs-1.js

                  Filesize

                  6KB

                  MD5

                  d6c0094811e6f78e13626f4a00437aa4

                  SHA1

                  58315dc43dc510b1ab68f7ccd8015f4180789263

                  SHA256

                  fce407bb52665b918fa022478fa43836b1ada7ca0f7fef68dacd87b36fb901e1

                  SHA512

                  ebdddf0e8c539d24a9696ee6f1fd4b3682828b3812a407d2ffbb7876931f37625f304fc35c481d830a2ca1199a36c0ada64292096ca72cb011b187c9a21d735b

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bozzcyfh.default-release\prefs-1.js

                  Filesize

                  6KB

                  MD5

                  a8015a96aa268060b147d5284edc526b

                  SHA1

                  f9dcab8b78175ecf904c0bc1114f28ffc19f70fe

                  SHA256

                  2fa02e528da5a92e72e3fd65e6aeb4edeb7adf8ddd75663ae8cd052ed9cfd025

                  SHA512

                  351e71306b60b807e8362cb5176297f25cee1cef8e1f3fa16a8833ee3faf0206f68e53c18695a803568a6d670f885df627c3f3f9cd3c57c500a696c22a85d2be

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bozzcyfh.default-release\prefs.js

                  Filesize

                  6KB

                  MD5

                  fcd5f37e5e4066f7cffe8eb106b6ce19

                  SHA1

                  b0a1c4d3d5c96271429fb09cb71055d177c13402

                  SHA256

                  38dbdb91f24f8e138803d71d0f7e4758fbb78e7f657208325fe30a501e225c67

                  SHA512

                  afdf7697bc784c3c85f30a8a1e4caa32459cf7f19c1ffacde04f62f089218ff1899ffe69fc465677d719546c8f91bea0d04807b13d58096f79aeba8eef0a0a15

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\bozzcyfh.default-release\sessionstore.jsonlz4

                  Filesize

                  1KB

                  MD5

                  62769c55dca79e2410357b32d980da11

                  SHA1

                  328d1a826d203d010a1477e1160971db047272df

                  SHA256

                  591d7f4837ce8c10d211d472fdb51347b88dc4687d2750946fdc66f91ded59bf

                  SHA512

                  842ad64c36ae58bd20b5f073cd7a6d7f2b2ab13fb5f840baf85d0b89db133c20c5990b20656e7d4a20567f5e8efde120e4c12f1b4f3ae6f1d6ce5a69b97d0aa0