Resubmissions

07-01-2025 07:57

250107-jtkpsstmcm 10

04-01-2025 03:01

250104-dhxmbsxqav 10

Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2025 03:01

General

  • Target

    Fortnite (1).exe

  • Size

    32.9MB

  • MD5

    396020facd54f9113325f71d02015af5

  • SHA1

    f2f2e0ede5dcb9e979884c925dc2b0878d69a33e

  • SHA256

    42532da2345fa4d3867a3898f9f42de85afe18571a6a0be00d0260e788317192

  • SHA512

    2b97304e492ddd1a2b3f8be495bb1b2049ca7d4b3d0c81f4fa5d48df8b24a8a9ddf8f3f47a87fa7dd60d9a750099add15c05db2ae8bb63242307a2326ea2ab89

  • SSDEEP

    786432:mow/lhOpW8428m1NxOwxJl8dPXB6BYeB4isdg+CxeDSaq3k0:ClhYWA8mxBlmPxaYeBSa4SNb

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 15 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 5 IoCs
  • Detects Pyinstaller 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fortnite (1).exe
    "C:\Users\Admin\AppData\Local\Temp\Fortnite (1).exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1128
    • \??\c:\users\admin\appdata\local\temp\fortnite (1).exe 
      "c:\users\admin\appdata\local\temp\fortnite (1).exe "
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2176
      • \??\c:\users\admin\appdata\local\temp\fortnite (1).exe 
        "c:\users\admin\appdata\local\temp\fortnite (1).exe "
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2660
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2248
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2916
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2516
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Loads dropped DLL
            • Adds Run key to start application
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:816
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:1104
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:04 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:1672
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:05 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:820
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:06 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:1800
        • C:\Windows\Explorer.exe
          C:\Windows\Explorer.exe
          4⤵
            PID:1952

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\_MEI21762\api-ms-win-core-localization-l1-2-0.dll

      Filesize

      21KB

      MD5

      724223109e49cb01d61d63a8be926b8f

      SHA1

      072a4d01e01dbbab7281d9bd3add76f9a3c8b23b

      SHA256

      4e975f618df01a492ae433dff0dd713774d47568e44c377ceef9e5b34aad1210

      SHA512

      19b0065b894dc66c30a602c9464f118e7f84d83010e74457d48e93aaca4422812b093b15247b24d5c398b42ef0319108700543d13f156067b169ccfb4d7b6b7c

    • C:\Users\Admin\AppData\Local\Temp\_MEI21762\python313.dll

      Filesize

      1.8MB

      MD5

      13e0653e90a091bde333f7e652ac6f8b

      SHA1

      130f3271120487b4aac482af56f4de6673aaaeda

      SHA256

      a89f9220c5afcb81b9a91f00b3bea9ed21ebd2cbae00785cbc2db264d90c862c

      SHA512

      ad513df8f9a53cb3a8e5bc430a977c4079e7d7547fce43fe29288988ee458ff2ea922eb979582fe4c276e58cd6ef8d771bf6535170554b82c5d54d87caaf5366

    • C:\Users\Admin\AppData\Local\Temp\_MEI21762\ucrtbase.dll

      Filesize

      992KB

      MD5

      0e0bac3d1dcc1833eae4e3e4cf83c4ef

      SHA1

      4189f4459c54e69c6d3155a82524bda7549a75a6

      SHA256

      8a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae

      SHA512

      a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd

    • C:\Users\Admin\AppData\Local\Temp\fortnite (1).exe 

      Filesize

      32.8MB

      MD5

      5004a36fe7495f94a5e619b6a37055f1

      SHA1

      4400401d2429054eb9aa3cb431db1385cab0c565

      SHA256

      69b7137f3d09cf45d2c57d7bc55a336a6de83b6440200423450b0ff5eec5cc1f

      SHA512

      45e518d39e68ba842cec824dc6773c0f02a025e4925934e45767a5508fc69f55c8b3d73b5461668022ccadeb9c757fd75107a7cfe158cbb6700c43a89018e952

    • C:\Windows\Resources\Themes\explorer.exe

      Filesize

      135KB

      MD5

      9759d94299911179c688b077d2d638ca

      SHA1

      e6176206c5fb5c5aa85f9ad058245f2457037021

      SHA256

      e8574ab9b6a14e3a854f3e8e4a8d9d73720a566e1b1261c082bf88fc34d99e8a

      SHA512

      2e710d6fc730f3006c3ab0fd42be16bc61cce6273df8c2b9e900f527534adc661602ddb78434bc75e36460e48b6d314ceb1e697d53b24ef385d6f249aef5ccd9

    • \??\c:\windows\resources\svchost.exe

      Filesize

      135KB

      MD5

      103ecbb031749a7d6e1292d0223b6912

      SHA1

      dab21c5cb2963eb95e8abfcd670b854c9ca3b80b

      SHA256

      c472412f580b131ed9a361e2d6d07197f1f3811cf62e343c437fd2ccfccf8f0a

      SHA512

      c281d507009011246241937ae3863a7c7c016ddc548f10d01b1ec96624a0e817c3e3ed593e018846cb11295507c9bf89635cc185fbecef8862701e7835e10537

    • \Users\Admin\AppData\Local\Temp\_MEI21762\api-ms-win-core-file-l1-2-0.dll

      Filesize

      21KB

      MD5

      1c58526d681efe507deb8f1935c75487

      SHA1

      0e6d328faf3563f2aae029bc5f2272fb7a742672

      SHA256

      ef13dce8f71173315dfc64ab839b033ab19a968ee15230e9d4d2c9d558efeee2

      SHA512

      8edb9a0022f417648e2ece9e22c96e2727976332025c3e7d8f15bcf6d7d97e680d1bf008eb28e2e0bd57787dcbb71d38b2deb995b8edc35fa6852ab1d593f3d1

    • \Users\Admin\AppData\Local\Temp\_MEI21762\api-ms-win-core-file-l2-1-0.dll

      Filesize

      18KB

      MD5

      bfffa7117fd9b1622c66d949bac3f1d7

      SHA1

      402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2

      SHA256

      1ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e

      SHA512

      b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f

    • \Users\Admin\AppData\Local\Temp\_MEI21762\api-ms-win-core-processthreads-l1-1-1.dll

      Filesize

      21KB

      MD5

      517eb9e2cb671ae49f99173d7f7ce43f

      SHA1

      4ccf38fed56166ddbf0b7efb4f5314c1f7d3b7ab

      SHA256

      57cc66bf0909c430364d35d92b64eb8b6a15dc201765403725fe323f39e8ac54

      SHA512

      492be2445b10f6bfe6c561c1fc6f5d1af6d1365b7449bc57a8f073b44ae49c88e66841f5c258b041547fcd33cbdcb4eb9dd3e24f0924db32720e51651e9286be

    • \Users\Admin\AppData\Local\Temp\_MEI21762\api-ms-win-core-timezone-l1-1-0.dll

      Filesize

      21KB

      MD5

      d12403ee11359259ba2b0706e5e5111c

      SHA1

      03cc7827a30fd1dee38665c0cc993b4b533ac138

      SHA256

      f60e1751a6ac41f08e46480bf8e6521b41e2e427803996b32bdc5e78e9560781

      SHA512

      9004f4e59835af57f02e8d9625814db56f0e4a98467041da6f1367ef32366ad96e0338d48fff7cc65839a24148e2d9989883bcddc329d9f4d27cae3f843117d0

    • \Windows\Resources\Themes\icsys.icn.exe

      Filesize

      135KB

      MD5

      042385328be4a72938e0f4ea469f4926

      SHA1

      5ef75b824db006553860bb8d618b9f6064a54a88

      SHA256

      2063b78ffb61dfefc8e51fbd247df7fc9dc7768844e541204d1c3dbb33189412

      SHA512

      546d4b0ffcf46657c5a57ab6ca3d2db74596d691b3def44fa6b65b1256881cec1d894628322fa87f24eaa5f21fbcbee07a5187f150606d8c2e58c9f730caa13c

    • \Windows\Resources\spoolsv.exe

      Filesize

      135KB

      MD5

      caec8e57ceaddfb9434d4f2400cbe7da

      SHA1

      1fce37a452f55a6bef2afb11e6762e164f3561d3

      SHA256

      44975159e6908e2c657ba9e8fa92cc590571136ed839a7d8b8e00d0d150a8d0f

      SHA512

      6fddaed71b1ff801c3742038cad4dc4f8116b5197a93e986c452b217f38fb37f4036adb3cea76798476dcb8dbdd8a0b9b0e3c41872f4f60cef35d2c239e0d67d

    • memory/816-1287-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1104-1281-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1128-0-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1128-1228-0x0000000000300000-0x000000000031F000-memory.dmp

      Filesize

      124KB

    • memory/1128-1285-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2248-1245-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2248-1284-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2248-1248-0x00000000002B0000-0x00000000002CF000-memory.dmp

      Filesize

      124KB

    • memory/2516-1271-0x0000000000330000-0x000000000034F000-memory.dmp

      Filesize

      124KB

    • memory/2516-1283-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2660-1282-0x000007FEF57B0000-0x000007FEF5E15000-memory.dmp

      Filesize

      6.4MB

    • memory/2660-1238-0x000007FEF57B0000-0x000007FEF5E15000-memory.dmp

      Filesize

      6.4MB

    • memory/2916-1286-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB