Analysis

  • max time kernel
    150s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    05/05/2026, 07:21

General

  • Target
    2026-05-05_9e8e796a87fc5a77a4e3571fc686d722_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe
  • Size 330KB
  • Sample260505-h6s19sat3x
  • SHA256 99dcfd49ad0170fc0fc4c098462eb38b53a621935a73219c25bae4af506d2de2
  • 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 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 3 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\2026-05-05_9e8e796a87fc5a77a4e3571fc686d722_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-05_9e8e796a87fc5a77a4e3571fc686d722_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:1804
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5020
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2700
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a538A.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2260
      • C:\Users\Admin\AppData\Local\Temp\2026-05-05_9e8e796a87fc5a77a4e3571fc686d722_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe
        "C:\Users\Admin\AppData\Local\Temp\2026-05-05_9e8e796a87fc5a77a4e3571fc686d722_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe"
        3⤵
        • Executes dropped EXE
        PID:1100
    • 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:4256
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4480
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3160
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4512
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1000
  • 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:2936

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXF010.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXF010.tmp
        • Size 77KB
        • SHA256 b4b5fd3f7b6f3976abeb5edd4f4e61196ed151ee40e79c3e441a55324804a771
        • 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 d5738251f4d0e3ec9029ce91deb214a9956eef58f0a1be2e0cfd218237da54ae
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXF44B.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\RCXF44B.tmp
        • Size 74KB
        • SHA256 13aed7b0b812c039b414ea8e3c4ec13a33400cdfefff6c1454cb929bb345822d
        • 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 0440889a65d9f32774fc7ab04400141dfd914a5dcdb32aac0e068ad4972aba21
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXF555.tmp

        • Path C:\Program Files (x86)\Mozilla Maintenance Service\RCXF555.tmp
        • Size 83KB
        • SHA256 980a814c422376242245e8d04a62fd4d6455e2bbf413b85fcd594168d1c80796
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7z.exe.Exe

        • Path C:\Program Files\7-Zip\7z.exe.Exe
        • Size 638KB
        • SHA256 5a7961018a6d6105438a7b30705d8845be860c8c98c8726b20c6daff546f3694
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE106.tmp

        • Path C:\Program Files\7-Zip\RCXE106.tmp
        • Size 74KB
        • SHA256 aa66fcfbc954203d051d413783d11a6754b7d94cdcd999136feaedf77196c0d9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE246.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXE246.tmp
        • Size 75KB
        • SHA256 61f0ba9bc0184172f82313f06f5778dcb642872371bca71d4c7dcecaacc183f9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        OfficeClickToRun.exe.Exe

        • Path C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe.Exe
        • Size 4.2MB
        • SHA256 b876356516e550501d7eb4973fe58af4297b7e9f7c8e10f73017089ace3950fd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXF97D.tmp

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\RCXF97D.tmp
        • Size 75KB
        • SHA256 994d6d1cebbda2d58efff3abc77336ef40b52a14467e75bae819a8ad15762757
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXF9CC.tmp

        • Path C:\ProgramData\Package Cache\{33d1fd90-4274-48a1-9bc1-97e33d9c2d6f}\RCXF9CC.tmp
        • Size 75KB
        • SHA256 f559154c3f178db561ec82a271c9c1c0160ce71afe6afb2234c7d9c9a596e778
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a538A.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a538A.bat
        • Size 902B
        • SHA256 aecd2089f6867499ab82f21b7dd9bc035aac8a62f0e1eb611e6dce23e0e62881
        • MD5 SHA1 SHA512 TLSH

        2026-05-05_9e8e796a87fc5a77a4e3571fc686d722_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-05-05_9e8e796a87fc5a77a4e3571fc686d722_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe.exe
        • Size 241KB
        • SHA256 66adbdbd251a5b9c37bc1448952e56e99c3b4ab7893aebdac0662ed987f24781
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 89KB
        • SHA256 f8b17fbe57fdb1da07e505ddcf47ed404664ca9ed1a3539b8507c12999564840
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

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

        memory/1804-9-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/2936-16-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/4256-18-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/4256-733-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/4256-1257-0x0000000000400000-0x0000000000425000-memory.dmp