Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/09/2026, 08:10

General

  • Target
    2026-09-27_215bfceb7966888dfde139f29b7a1e92_cobalt-strike_elex_icedid_njrat.exe
  • Size 4.0MB
  • Sample260928-j2xpbszzev
  • SHA256 9c03a72f143de16aa0372794f66e4366ca8b0f841661bfd948274aca717c9428
  • 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 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 22 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
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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\2026-09-27_215bfceb7966888dfde139f29b7a1e92_cobalt-strike_elex_icedid_njrat.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-27_215bfceb7966888dfde139f29b7a1e92_cobalt-strike_elex_icedid_njrat.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:3352
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:792
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2996
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a85D0.bat
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5856
      • C:\Users\Admin\AppData\Local\Temp\2026-09-27_215bfceb7966888dfde139f29b7a1e92_cobalt-strike_elex_icedid_njrat.exe
        "C:\Users\Admin\AppData\Local\Temp\2026-09-27_215bfceb7966888dfde139f29b7a1e92_cobalt-strike_elex_icedid_njrat.exe"
        3⤵
        • Executes dropped EXE
        PID:5860
    • 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
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4476
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5904
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5908
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5052
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5776
  • 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:5412

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe.Exe

        • Path C:\Program Files\7-Zip\7z.exe.Exe
        • Size 607KB
        • SHA256 e77190e56ab1ea9452228877505c7eb42f194bbe1b8385d992996447308bd5a4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a85D0.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a85D0.bat
        • Size 788B
        • SHA256 5633ba5eed5cd9832434dc151b2f0150911d4753c2785e083d0d731c2c2ee097
        • MD5 SHA1 SHA512 TLSH

        2026-09-27_215bfceb7966888dfde139f29b7a1e92_cobalt-strike_elex_icedid_njrat.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-09-27_215bfceb7966888dfde139f29b7a1e92_cobalt-strike_elex_icedid_njrat.exe.exe
        • Size 4.0MB
        • SHA256 3bef9b502fa59bb006524eb9b276ba57b7dfd22eaf1576823c4f31d0cad8021e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 58KB
        • SHA256 e63ee3bd70268ceed0ec6635f11b7b4abd0dc1effe8d3ce21755eaafaf096a6a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

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

        memory/3352-0-0x0000000000400000-0x000000000043D000-memory.dmp

        memory/3352-1-0x0000000000590000-0x00000000005B0000-memory.dmp

        memory/3352-12-0x0000000000400000-0x000000000043D000-memory.dmp

        memory/4476-13-0x0000000000400000-0x000000000043D000-memory.dmp

        memory/4476-23-0x0000000000400000-0x000000000043D000-memory.dmp

        memory/5412-21-0x0000000000400000-0x000000000043D000-memory.dmp