Analysis

  • max time kernel
    181s
  • max time network
    199s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2024, 04:02

General

  • Target

    wexhfyjiflbfxbkpbmwi.exe

  • Size

    10.1MB

  • MD5

    5a3566fab9f55ddcf287aa96a60ad579

  • SHA1

    247839d601b36bd2c0411241e4a89b28c6ff70da

  • SHA256

    54df213162ccbb081e13f8cb5bd84022f7e6587a68a04522da08f9fd56b8ef53

  • SHA512

    46f5b7e2524f29ca069da75a0a4c3958d2dada86c7bc7db814ed73a737e5906b6c6cb20cb113d5982975ed6443be0deac9c56338a7c2b5424cfd86232a52b807

  • SSDEEP

    196608:VEzDgHsNFdc2k9dYnqFc9PzzGZnjurXuwLs4PCE4+HtrHpRpfxGjpeQN8:4RNFdav26pjujuwhaE4+HtJRppGsl

Score
10/10

Malware Config

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Deletes itself 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 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:\Windows\sysmon.exe
    C:\Windows\sysmon.exe
    1⤵
      PID:2836
      • C:\Windows\system32\eap3host.exe
        "C:\Windows\system32\eap3host.exe"
        2⤵
        • Deletes itself
        • Suspicious behavior: EnumeratesProcesses
        PID:1860
    • C:\Users\Admin\AppData\Local\Temp\wexhfyjiflbfxbkpbmwi.exe
      "C:\Users\Admin\AppData\Local\Temp\wexhfyjiflbfxbkpbmwi.exe"
      1⤵
      • Suspicious use of NtCreateUserProcessOtherParentProcess
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1540
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:1756
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe"
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:3000
        • 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:1168
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.0.990734152\1011111655" -parentBuildID 20221007134813 -prefsHandle 1860 -prefMapHandle 1852 -prefsLen 20749 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {a8e0ef78-32ef-4a83-9d9e-dc4cd73fe7ae} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 1952 1ecbd9d6158 gpu
            3⤵
              PID:3528
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.1.30366422\918845957" -parentBuildID 20221007134813 -prefsHandle 2380 -prefMapHandle 2376 -prefsLen 20785 -prefMapSize 233444 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {cfa83966-0e42-4795-ad14-244d599c96fb} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 2408 1ecb11e2658 socket
              3⤵
              • Checks processor information in registry
              PID:4400
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.2.717586704\853901876" -childID 1 -isForBrowser -prefsHandle 3224 -prefMapHandle 3220 -prefsLen 20823 -prefMapSize 233444 -jsInitHandle 1364 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {817271a5-0ca1-416b-8a30-4c1e027a00eb} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 1768 1ecbd95ec58 tab
              3⤵
                PID:5112
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.3.780949276\736291062" -childID 2 -isForBrowser -prefsHandle 3456 -prefMapHandle 1200 -prefsLen 26066 -prefMapSize 233444 -jsInitHandle 1364 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {d9d5fc6d-4554-4e5c-b59b-fd700837eb27} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 3464 1ecb1162b58 tab
                3⤵
                  PID:4780
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.4.434876217\272351976" -childID 3 -isForBrowser -prefsHandle 4088 -prefMapHandle 4084 -prefsLen 26125 -prefMapSize 233444 -jsInitHandle 1364 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {68462d1d-8adc-47dd-a831-52580fd38770} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 4104 1ecc2986d58 tab
                  3⤵
                    PID:380
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.5.1899727422\1522679975" -childID 4 -isForBrowser -prefsHandle 4932 -prefMapHandle 4944 -prefsLen 26206 -prefMapSize 233444 -jsInitHandle 1364 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {d7728775-27fb-49ee-842f-5cf5f427baf1} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 4980 1ecc2987f58 tab
                    3⤵
                      PID:4368
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.7.1296560999\1067016397" -childID 6 -isForBrowser -prefsHandle 5396 -prefMapHandle 5400 -prefsLen 26206 -prefMapSize 233444 -jsInitHandle 1364 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {bd22ca4e-2579-4503-8824-79c4a11d3700} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 5476 1ecc3f19c58 tab
                      3⤵
                        PID:5096
                      • C:\Program Files\Mozilla Firefox\firefox.exe
                        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.6.269131346\1567242477" -childID 5 -isForBrowser -prefsHandle 4992 -prefMapHandle 4932 -prefsLen 26206 -prefMapSize 233444 -jsInitHandle 1364 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {e07b68d8-ed73-490e-9b2a-968d286c8c33} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 5220 1ecc3f19958 tab
                        3⤵
                          PID:1308
                        • C:\Program Files\Mozilla Firefox\firefox.exe
                          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1168.8.392691406\490272728" -childID 7 -isForBrowser -prefsHandle 5848 -prefMapHandle 5836 -prefsLen 26460 -prefMapSize 233444 -jsInitHandle 1364 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {316ec806-3c56-42c6-9447-15035016acca} 1168 "\\.\pipe\gecko-crash-server-pipe.1168" 5860 1ecc5b33858 tab
                          3⤵
                            PID:2544
                      • C:\Windows\system32\OpenWith.exe
                        C:\Windows\system32\OpenWith.exe -Embedding
                        1⤵
                        • Modifies registry class
                        • Suspicious use of SetWindowsHookEx
                        PID:5572

                      Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

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                            Downloads

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\datareporting\glean\db\data.safe.bin

                              Filesize

                              2KB

                              MD5

                              5ff1366d367991b8ba0ae65d1dcec81a

                              SHA1

                              01d105a2a0f90d4089044aff32c070f82b569a25

                              SHA256

                              c3ca95a4d519e138c2c590b0e740db77d9576dec9048a35e12d611fbb76482d2

                              SHA512

                              9d1e77b9054531f538b70e01f950da4f0882d521c60e45d37072ce83a17aabf19ce9d1bae8f27ccf03b05fd7a8321ae8c6733d3f35083c119f27245e6a6fda3f

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\datareporting\glean\pending_pings\2a84507e-5f58-4e0c-8ece-14652157cd91

                              Filesize

                              11KB

                              MD5

                              a755fae31fa3ab1403df7670ab5ac792

                              SHA1

                              870fc309d9103e6457cc9ebc531bbc27d0b85e47

                              SHA256

                              9c304f335f2870b5485f44966b4d0b74e3d567e41b8d0b6c9b5a9c5f8e8ad33d

                              SHA512

                              8994cb80595ae7ab5ff4b6ac009e967c2e2c0404c8ed83ce4626bde82dc47cdc1f5ddbebc98aac9cf0b38a14af1939e42bf1f02fc9fd70227f0ea08574e3ddcd

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\datareporting\glean\pending_pings\ce0a7405-38d9-43a2-8c85-cb873fa72e00

                              Filesize

                              746B

                              MD5

                              a47131cfa69954e16d913427788d72f5

                              SHA1

                              bff8e66bf81fc15d989fd2cff5c9d0ce2cd98de0

                              SHA256

                              16824d52a30e6f89851a94e7d854fbebe95cf311e9cb2dc692f055251193f12c

                              SHA512

                              a974873fce6be856995341190528a9076edcf5bedcb71e6af7425b61109cfda3f9f5705182f69e3988b6b20356679bb64385d2353a250885daf68db5ca1a1fd1

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\prefs-1.js

                              Filesize

                              6KB

                              MD5

                              946c7295230d518d2f9abd30e8d7f746

                              SHA1

                              d96d729c194e5846b15f857e1607b28d9856194e

                              SHA256

                              d75a529b5e2a6a26ceb3184af96cbde5ee345bfbf2420ac84a99a10fb327c649

                              SHA512

                              8ca3619ee5015e612792f85d5d455f28fdb28cd4a4acaba03559d2b716e0ec59c1f6459839956067d750cf9ed5338e8a43644b1013f0e98e560372dd5e823758

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\prefs.js

                              Filesize

                              6KB

                              MD5

                              c5f277942397a39717ee692b0f6e2614

                              SHA1

                              72b08f7ee7b2072a159dca2bfa0d92515ef6e9f3

                              SHA256

                              67bbdd8e5dfdd6ec023f1f290287f73f703f1e5cf31a318d4a4b23b896a9b896

                              SHA512

                              6dd7de12103bfbf0df35752d667619d59ad47b57c155e9615b6705f664a208e24cd0e8cf4aaf952c436843d33e4791939a292f672306ddf0649aa9ac93783cf9

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\sessionstore-backups\recovery.jsonlz4

                              Filesize

                              5KB

                              MD5

                              4942d3a9f2e2c464121cdd988bb6dff8

                              SHA1

                              9b0e0c328c6b0e5ecb7991628d5398fce461add5

                              SHA256

                              073f353395ce6b18c0af1e037424258e92fde95e08f4f4a0a9498a24f511c8df

                              SHA512

                              c6c594abee7cc40f5dc0235671226793a00f542d7213b50bbcae62ac0202ac08106932443c455f11b0572de93840a06f8c52ab4a4a1c8dd052617ca731490339

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\sessionstore.jsonlz4

                              Filesize

                              5KB

                              MD5

                              44ed70a8a5130c709ecb1983d09b1e7b

                              SHA1

                              aa461d39f89d3097930351d276c22d2fbd77a9ee

                              SHA256

                              44e00cfd2024e6a9cd5f7a8c5ab7d6776be17c99ddceb6ebb699307cb392f7c7

                              SHA512

                              35acfc8f4af4f6815daebf3b72f719df8c7584abc6f93d128e5554be257dda88b57ab1930a79bce4b3b48806b4896d55da5c42503354c11420655d80341fba02

                            • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\eypn1lcs.default-release\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite

                              Filesize

                              184KB

                              MD5

                              91e2a4879f4a7d77b1152e53496bbfc4

                              SHA1

                              f22752151ef7f6758d30891a996b7b5c30acd97c

                              SHA256

                              198277a9823ee89020b45bdd52bf6c13641d0b7c9127ee1603b42cbd3ebc2fae

                              SHA512

                              3a27afe500c522face67427db3d6611608f058432874ae9ec438b9ef9fa9db4a0c2cef49d2d2c363f8dff56f3c68525af0f6bd3dde1e0750e0977c6a28644f87

                            • memory/1540-1-0x0000021184B00000-0x0000021184B01000-memory.dmp

                              Filesize

                              4KB

                            • memory/1540-0-0x0000000000060000-0x0000000001406000-memory.dmp

                              Filesize

                              19.6MB

                            • memory/1860-10-0x000001C5A6440000-0x000001C5A6441000-memory.dmp

                              Filesize

                              4KB

                            • memory/1860-12-0x000001C5A5250000-0x000001C5A6440000-memory.dmp

                              Filesize

                              17.9MB

                            • memory/1860-11-0x000001C5A5250000-0x000001C5A6440000-memory.dmp

                              Filesize

                              17.9MB

                            • memory/1860-9-0x000001C5A5250000-0x000001C5A6440000-memory.dmp

                              Filesize

                              17.9MB

                            • memory/1860-2-0x000001C5A5250000-0x000001C5A6440000-memory.dmp

                              Filesize

                              17.9MB