Analysis

  • max time kernel
    149s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    25/05/2026, 10:32

General

  • Target
    2026-05-25_4a1920c7ffc2148ee2d2084187b0ffdd_cobalt-strike_elex_icedid_njrat_vidar.exe
  • Size 332KB
  • Sample260525-mk8xtagy3w
  • SHA256 2d71aff384606123c88b281c349ffcf7f83244f0dd38f00efa9099bcda4b26f3
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Renames multiple (255) 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 3 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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-25_4a1920c7ffc2148ee2d2084187b0ffdd_cobalt-strike_elex_icedid_njrat_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-25_4a1920c7ffc2148ee2d2084187b0ffdd_cobalt-strike_elex_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:6116
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4764
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4736
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a1AC6.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3744
      • C:\Users\Admin\AppData\Local\Temp\2026-05-25_4a1920c7ffc2148ee2d2084187b0ffdd_cobalt-strike_elex_icedid_njrat_vidar.exe
        "C:\Users\Admin\AppData\Local\Temp\2026-05-25_4a1920c7ffc2148ee2d2084187b0ffdd_cobalt-strike_elex_icedid_njrat_vidar.exe"
        3⤵
        • Executes dropped EXE
        PID:3424
    • 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:3328
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5800
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5620
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3084
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5660
  • 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:2212

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXB421.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXB421.tmp
        • Size 94KB
        • SHA256 d8d93131073755f109a310d912b7cc1bf5987ba277d9906c58a6df1698059270
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB5C4.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\RCXB5C4.tmp
        • Size 103KB
        • SHA256 742b2019651362fe67da7a19288776610f4253de8760ea42bd14c35e66d63112
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB677.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\RCXB677.tmp
        • Size 91KB
        • SHA256 a567f4fffbd1b33867124e6531d2ee8b2982125a638c75da7b43e2e1c125a776
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB504.tmp

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\RCXB504.tmp
        • Size 118KB
        • SHA256 8dce519c0690c2fa257e999e00e35081798ddc0f5ee942851cc6e12ebaca008d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7z.exe.Exe

        • Path C:\Program Files\7-Zip\7z.exe.Exe
        • Size 642KB
        • SHA256 92c94b8eb4eb4ab9e957f0a4bed1ce70c818cec070972424d583aecde80b7583
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXA906.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXA906.tmp
        • Size 92KB
        • SHA256 e96d91c42307a0306bcfc6492584e422806e1bc8e8c2f71686233cd08d6485b2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXAB1A.tmp

        • Path C:\Program Files\Microsoft Office 15\ClientX64\RCXAB1A.tmp
        • Size 156KB
        • SHA256 3bdd2ebe6b1ab9c29bd4233fcae02b53faa23b5c97d5389635a551f4038d2c76
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXAAE9.tmp

        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\RCXAAE9.tmp
        • Size 91KB
        • SHA256 d1677aac5a3bcf5dc66bdc1983623a7fe2a3e3540aff76971a725fe0b65cf460
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe.Exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe.Exe
        • Size 1.4MB
        • SHA256 6e782b56b3a89fcd2b842061c4ed8362579096b309e7f290cf03f8aa4d839e5f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXBB6B.tmp

        • Path C:\ProgramData\Package Cache\{33d1fd90-4274-48a1-9bc1-97e33d9c2d6f}\RCXBB6B.tmp
        • Size 92KB
        • SHA256 37f384e354898f55e655ff5edaaec13a4fe6ed2b962e5962d68a9477d15e95aa
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a1AC6.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a1AC6.bat
        • Size 824B
        • SHA256 6ef7b1aa827b35897b8261e8ad2ae6f5e043aa34b5fea3d13b00115e7408393c
        • MD5 SHA1 SHA512 TLSH

        2026-05-25_4a1920c7ffc2148ee2d2084187b0ffdd_cobalt-strike_elex_icedid_njrat_vidar.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-05-25_4a1920c7ffc2148ee2d2084187b0ffdd_cobalt-strike_elex_icedid_njrat_vidar.exe.exe
        • Size 239KB
        • SHA256 fcd3a002ebe8f18615a8fd6bcf561b54276a9e8952a3cc683bbe95843fcc37e5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 93KB
        • SHA256 2955441b19a9d66d6b2610227491546e32b02883f09dabc0cb6a657ac1494225
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

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

        memory/2212-19-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3328-22-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3328-1137-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3328-1255-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/6116-0-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/6116-12-0x0000000000400000-0x0000000000429000-memory.dmp