Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    16/05/2026, 02:26

General

  • Target
    2026-05-16_9aca31c721f71151ce8b4c200831b369_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe
  • Size 4.4MB
  • Sample260516-cwywwaas21
  • SHA256 19421855b3e1ee5f9be90268fa8d48ba4b4f4cc585f3ca66812ca1fc3c5ecfc7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Renames multiple (257) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Drivers directory 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-16_9aca31c721f71151ce8b4c200831b369_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-16_9aca31c721f71151ce8b4c200831b369_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe"
    1⤵
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5592
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5352
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a1383.bat
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5936
    • C:\Windows\Logo1_.exe
      C:\Windows\Logo1_.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2796
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1636
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3456
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5184
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5540
  • C:\Windows\uninstall\rundl132.exe
    C:\Windows\uninstall\rundl132.exe
    1⤵
    • Drops file in Drivers directory
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3308

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXADA9.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXADA9.tmp
        • Size 94KB
        • SHA256 4d3bad1135823dc761176cd505345a604dee71e8e9c1b2c12bc260c4bf55fa3c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXAE5B.tmp

        • Path C:\Program Files (x86)\Google\Update\RCXAE5B.tmp
        • Size 90KB
        • SHA256 3384a324cc51c727196ecba480c8f6124659a8578d403253bbcce970a5fc8998
        • MD5 SHA1 SHA512 SSDEEP TLSH

        msedgewebview2.exe.Exe

        • Path C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\msedgewebview2.exe.Exe
        • Size 3.3MB
        • SHA256 f7755e05fb3d8dcd0b09065e1981dc4a1490d8a75ffffac966d8b94edf3c6a12
        • MD5 SHA1 SHA512 SSDEEP TLSH

        msedge.exe.Exe

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\msedge.exe.Exe
        • Size 4.0MB
        • SHA256 b6390d5c928e8824c72b430ccc82f066fd312ad5f9aa505a860dee2247064106
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB251.tmp

        • Path C:\Program Files (x86)\Mozilla Maintenance Service\RCXB251.tmp
        • Size 99KB
        • SHA256 f9b356b22fc4ec1c0733ee5fd9291bdff6f2983cad164cb28a9b8d3bc8a1b58b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXA1D2.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXA1D2.tmp
        • Size 91KB
        • SHA256 517a6fc4337f2fb2c008be2ecbab7b13db7903b3e2b6cdcb1539899cb7c98e98
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXA3F6.tmp

        • Path C:\Program Files\Microsoft Office 15\ClientX64\RCXA3F6.tmp
        • Size 156KB
        • SHA256 c8c33c97e966496e6cc3330f1266ef66ec488c005b4c1d59b9eaef0df3d96741
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXA447.tmp

        • Path C:\Program Files\Mozilla Firefox\RCXA447.tmp
        • Size 91KB
        • SHA256 d45f97a111c15d3c30f695644a34c7028a2c01adc93057a3344526a699cf3daf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StopConvertTo.exe.Exe

        • Path C:\Program Files\StopConvertTo.exe.Exe
        • Size 212KB
        • SHA256 5c6c3315f2eab463d1341d81adb02f8fbb9abac86da13623b780e0b2fc952687
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXA47B.tmp

        • Path C:\Program Files\VideoLAN\VLC\RCXA47B.tmp
        • Size 92KB
        • SHA256 7b4b73cd94a44337268fff68fe2219cc55d7ec32e45261cce5e12156df47e638
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB688.tmp

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\RCXB688.tmp
        • Size 91KB
        • SHA256 b34c5ae6b03f347e965f4a9aa4d632a0d1b2842566e70546f76b964955a6e523
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a1383.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a1383.bat
        • Size 902B
        • SHA256 53f007063a2589c1391811083dad666bb6df340bfa70db8742de64eae686f1e8
        • MD5 SHA1 SHA512 TLSH

        2026-05-16_9aca31c721f71151ce8b4c200831b369_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-05-16_9aca31c721f71151ce8b4c200831b369_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe.exe
        • Size 4.3MB
        • SHA256 b5afed0235fa6e7768da634f1b9235ef54d22e9583cee4d1ccb6a0107fbb3555
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 93KB
        • SHA256 ef744d7f98e4f86602a45ded1602958f83251bcc9addbdd27dd32e769bff8465
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

        • Path C:\Windows\system32\drivers\etc\hosts
        • Size 842B
        • SHA256 d9704dab05e988be3e5e7b7c020bb9814906d11bb9c31ad80d4ed1316f6bc94e
        • MD5 SHA1 SHA512 TLSH

        memory/2796-18-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/2796-894-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/2796-1257-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3308-15-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/5592-8-0x0000000000400000-0x0000000000429000-memory.dmp