Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10-1703_x64
  • resource
    win10-20240214-en
  • resource tags

    arch:x64arch:x86image:win10-20240214-enlocale:en-usos:windows10-1703-x64system
  • submitted
    19/02/2024, 16:38

General

  • Target

    Prax.dll

  • Size

    6.4MB

  • MD5

    965cba6a51a8f221a584c6592f6d364a

  • SHA1

    7add8e3f2ba9c497413510ce8d96ace4943296b8

  • SHA256

    db2f15859bf603ae865e77425d78331c310d2165a6a1164b10c21b7a50107938

  • SHA512

    7fc89464e9019a04a1c18a6a124dd1110dafbaa40ae6cdb2d8f44d7bf6267499ef6de0a2166a99d38e73358c0bbd3f6b013cd462a4d693af2fa3a5dbdfaaa010

  • SSDEEP

    196608:JSUqoiFcd9yP0v6ydkNMLlIKWsFefGVlC18Hj:0roiFc6svhaN2IKVeOVY1wj

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Themida packer 10 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 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\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Prax.dll,#1
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:3564
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:312
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4284
    • 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:2388
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.0.1415688184\1603889656" -parentBuildID 20221007134813 -prefsHandle 1716 -prefMapHandle 1708 -prefsLen 20747 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {82d689fc-07de-4420-867b-31f7ea9ee3b9} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 1796 1f327207e58 gpu
        3⤵
          PID:4252
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.1.562153261\234014821" -parentBuildID 20221007134813 -prefsHandle 2140 -prefMapHandle 2136 -prefsLen 20828 -prefMapSize 233444 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {15eb79c2-3859-4172-8576-55444ec2bea9} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 2152 1f313a72558 socket
          3⤵
          • Checks processor information in registry
          PID:3332
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.2.570056800\930864232" -childID 1 -isForBrowser -prefsHandle 2696 -prefMapHandle 2868 -prefsLen 20931 -prefMapSize 233444 -jsInitHandle 1328 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {1a38b96f-6b44-436e-b224-b850c72583f2} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 2688 1f32a193e58 tab
          3⤵
            PID:2356
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.3.57019162\694508604" -childID 2 -isForBrowser -prefsHandle 3520 -prefMapHandle 3516 -prefsLen 26109 -prefMapSize 233444 -jsInitHandle 1328 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {1a9f6236-a994-48a6-b834-d866b2800123} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 3524 1f313a61358 tab
            3⤵
              PID:3732
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.4.100240832\242935350" -childID 3 -isForBrowser -prefsHandle 4128 -prefMapHandle 4140 -prefsLen 26168 -prefMapSize 233444 -jsInitHandle 1328 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {86f98ad0-0645-4059-90e0-388a2131c801} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 4404 1f32c1dc258 tab
              3⤵
                PID:3680
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.5.1315376048\1466961751" -childID 4 -isForBrowser -prefsHandle 4796 -prefMapHandle 4792 -prefsLen 26328 -prefMapSize 233444 -jsInitHandle 1328 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {746f0329-eaca-46f9-8bb8-1dfd105f8255} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 4808 1f32c118a58 tab
                3⤵
                  PID:1904
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.7.17653065\441361606" -childID 6 -isForBrowser -prefsHandle 5152 -prefMapHandle 5156 -prefsLen 26328 -prefMapSize 233444 -jsInitHandle 1328 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {b2b771e3-8500-4c21-9342-961158afe695} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 5144 1f32d368d58 tab
                  3⤵
                    PID:4508
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.6.1243117856\1465245686" -childID 5 -isForBrowser -prefsHandle 4952 -prefMapHandle 4956 -prefsLen 26328 -prefMapSize 233444 -jsInitHandle 1328 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {80c5e5ec-6a32-4559-bcbf-ab69c1d50a5d} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 4944 1f32c5f4758 tab
                    3⤵
                      PID:4332
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2388.8.916423895\1542053744" -childID 7 -isForBrowser -prefsHandle 4848 -prefMapHandle 4976 -prefsLen 26328 -prefMapSize 233444 -jsInitHandle 1328 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {3610b6fd-c2c1-4807-97c4-8a9b5521907d} 2388 "\\.\pipe\gecko-crash-server-pipe.2388" 4796 1f327827258 tab
                      3⤵
                        PID:872

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\cache2\entries\0CAEF7F888B762E2BA192BCD450FFE1DFD4D8CA9

                    Filesize

                    57KB

                    MD5

                    a5db28a9df447f36e3aad3aad32cffae

                    SHA1

                    a5193906f2f745c077b59c9c76070bc02e2e04e7

                    SHA256

                    c020e40c1355b00d0bc760d4bba001d92c53e54b099f268fe4daab9495038dda

                    SHA512

                    c7766da58556ac0ae7afae4047c460bbffd175840ba83d0469bb8040c2de06ed433506b2b62bcd200cebb2fbff3eb203952528e035ea09cf00697e17e579b727

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\datareporting\glean\db\data.safe.bin

                    Filesize

                    2KB

                    MD5

                    a9e633ffc15b8f0bb7916f6943e49d88

                    SHA1

                    2a460b0bd08a9276c0df489573f7e978db7c7790

                    SHA256

                    9a9a5e73efb8f2ff14eb25fadc22cde433fa4ab83dc122da7471fff09e0ebe66

                    SHA512

                    b22adc3b0042a49dd927737d311a0edf83e49e6c39454c4863bb1884215c93e524e4c9152ed68250b226beda4b4c48970b64f68876d120a0cd9b569045adb65f

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\datareporting\glean\pending_pings\2aee7cc3-643f-40d4-8ba3-bca967c3d9ce

                    Filesize

                    10KB

                    MD5

                    00b6865a7930c448cb6058a7a64358bf

                    SHA1

                    737a8e68dc78b729bf6e1a34a7f3f398fb416a5f

                    SHA256

                    ed1674c3a65bb0f7902bbe0fcd00b1d09014e84f0de44497b3fff90ef84c7e6d

                    SHA512

                    ef123bf0c75eaacc03097f8d69c7542e33844823e686b5e684958a1057e5b6c9faad04ee4bbc3ef92fd4356380a9d8a717ee2ecb06c98cc07f6d32e750cbb4c3

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\datareporting\glean\pending_pings\3b0a42bf-3545-4806-b967-e71a3ba52e8c

                    Filesize

                    746B

                    MD5

                    e80e3ab95f0f03adff2836bbe2547ad0

                    SHA1

                    01103835c789c83adac0aab2edf1da19c1ff138e

                    SHA256

                    f1fd1012eb357c05e2d1532b4f8b488790e68f78138631264e70ea186310b363

                    SHA512

                    6ac6a1339463c9f6787aed5e17422f5cb595582337db63ea7769116fcc4b7d022299097e03cb3688a48a177c0b350ba76b49e7253cb04fa19ce7787faaa72f62

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\prefs-1.js

                    Filesize

                    6KB

                    MD5

                    c2506e022acb825f36d7662c12aa8307

                    SHA1

                    4e11f34930f1db66392384571eb229be0df91f0d

                    SHA256

                    5316a149f9dc4fedc7bd7e002ed54f364c3d8808435fb7d5678f31e196c4fce9

                    SHA512

                    522046f518494d16692f12941c17bd2e58469b15db23c2f075c6cbf38a80809e343402f60ed7532ad530b071c71e6340bfb0ffcd626966d74e6b7d7665d37bf2

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\prefs.js

                    Filesize

                    6KB

                    MD5

                    d86b92268a6303562443ea4fb01f2f69

                    SHA1

                    c2bbaa07400bd19ffcddfdb958df2d87b0a90d8c

                    SHA256

                    f8ac4336be0f02dacdedec8d9a360fbddab6ebf52103a1791ead3a8610f01bd5

                    SHA512

                    b9d42b64d8542eaed4e370d792bb1fa3a9d538673a106864828fd466087ae36ec3748952f506dace9d57a6814cd29daf02356eb020e363a97f94b5044b3140e8

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\sessionstore-backups\recovery.jsonlz4

                    Filesize

                    3KB

                    MD5

                    59d5366928e0dd76dd909be6cf98b900

                    SHA1

                    5db434d5798dbd2c9e40c26b8ca327b9cca17310

                    SHA256

                    50d2416b47b2db48bf2ea9143b5fcd3ef2859ea8205d8216fc38dfdeb62e2e85

                    SHA512

                    8a14ae42c31e8a11aed65133ee6cc4da2068e7222aa4a0a719b47832a645861d5cc55c7d9ea4688498b1aab28a23714d8a14b8ff66f92d01e8a6889be89c8c2a

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\sessionstore-backups\recovery.jsonlz4

                    Filesize

                    1KB

                    MD5

                    baa955491605a1f60f32ea03a118ffa2

                    SHA1

                    6aec53508f21ddaad762e09117a94a40cd4b04a8

                    SHA256

                    445bed2e104fe2e64f9013d439a175734a851683cc9a3d81bf4105d960e53430

                    SHA512

                    a9aa851443e16694824a18cfcd8fca9072d934fa0f0dec17bd22da44064fd91f7172ce312fa0f9d190e9baa6bded9b79a7b499499f3ee045e88889f37ccdf6ce

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\sessionstore-backups\recovery.jsonlz4

                    Filesize

                    4KB

                    MD5

                    6ad9a3b4ce231d5f3d9dc604f2783095

                    SHA1

                    96ea8742cdddb1f4545dfbac27d36d198f860b88

                    SHA256

                    16e31d7b3bee2360d7341d02eb134c01cbc459c385d4673b02483608508599c8

                    SHA512

                    eb502515ba5339be8ca6b1d174cd17e9877481ab88354cf3e0d9b9b23b25f1399d3b3a93334d073e94768f77402acb89d1f60e78a9a58d53f1fc64c7d6bb385d

                  • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\jmbcz9mp.default-release\sessionstore.jsonlz4

                    Filesize

                    4KB

                    MD5

                    5f36a7dfceb05b58922085e350cde987

                    SHA1

                    bb9c9fc5db1397f45b6ac058ea32cf7f6f5eec32

                    SHA256

                    6f0804ad0e0dd672cd33258398a7721dbd97c911516e09b688de404b06333b18

                    SHA512

                    53a5d4b9335037753e643708b12e26f9ae122fcdf95c0bb85af5ac0f360d3ba56ecd12c5197cc12204a8c2f1964c1695b007be6dae13b12f01e3f5a21be6520c

                  • memory/3564-11-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-27-0x00007FFE6FCC0000-0x00007FFE6FE9B000-memory.dmp

                    Filesize

                    1.9MB

                  • memory/3564-17-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-15-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-14-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-13-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-12-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-3-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-10-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-9-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-8-0x00007FFE52B10000-0x00007FFE53B53000-memory.dmp

                    Filesize

                    16.3MB

                  • memory/3564-7-0x00007FFE6FCC0000-0x00007FFE6FE9B000-memory.dmp

                    Filesize

                    1.9MB