Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/09/2026, 18:45

General

  • Target
    2026-09-03_f42f5bc2367e4d755b210dccc62e90c0_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe
  • Size 359KB
  • Sample260903-xecbrsdr6w
  • SHA256 76adb3f1b7b71bdbbbc746103bc5b7357c58c2973c66097eff4380a1b9186acb
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Renames multiple (258) 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 3 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.

  • 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\2026-09-03_f42f5bc2367e4d755b210dccc62e90c0_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-03_f42f5bc2367e4d755b210dccc62e90c0_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:4060
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5748
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:848
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a35BC.bat
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:4768
    • 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:2784
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3488
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:252
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1104
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3100
  • 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:2648

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXCDEB.tmp

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RCXCDEB.tmp
        • Size 139KB
        • SHA256 38c834a224852dd2f535ce9e9e98c1efd18172e49a55b61fa48df958ecb1e214
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD0EB.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXD0EB.tmp
        • Size 77KB
        • SHA256 4d11579b86095fdd4e82e0ef5b3479375fb6c222b7023ef538ae6946691ef794
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD458.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\RCXD458.tmp
        • Size 3.5MB
        • SHA256 ed0fc05bdc27a05a80347b80211455507b9c307dd74bd099672a44d59a386abe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD536.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\RCXD536.tmp
        • Size 73KB
        • SHA256 92d2ff2b48b11b1088f985cf54114067fa09a32a327ed648c6044087f47c5d37
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD22E.tmp

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\RCXD22E.tmp
        • Size 101KB
        • SHA256 6c1a7ba019e33ed061647851ff9a351c45698767a6e75b4b63dd03cce126abcf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD6BD.tmp

        • Path C:\Program Files (x86)\Mozilla Maintenance Service\RCXD6BD.tmp
        • Size 82KB
        • SHA256 7a263b752bfc2a1f07b3b1d221993f805cb3ada7a457e251a3e621154711c630
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC338.tmp

        • Path C:\Program Files\7-Zip\RCXC338.tmp
        • Size 74KB
        • SHA256 c71c87b083db4f1311c16b83851721ab3182285fee3915c0bbe0a31cbc8921d2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC874.tmp

        • Path C:\Program Files\Mozilla Firefox\RCXC874.tmp
        • Size 74KB
        • SHA256 e901cb9f1beccb2d3f0260b723afc01ea59322cafb8ff97a2fda969743f460dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDAF4.tmp

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\RCXDAF4.tmp
        • Size 528KB
        • SHA256 26daec3a67820c970d2e585c15e76a22e25478042f012ff7533a6a60fcc41c35
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDB72.tmp

        • Path C:\ProgramData\Package Cache\{33d1fd90-4274-48a1-9bc1-97e33d9c2d6f}\RCXDB72.tmp
        • Size 75KB
        • SHA256 8eeb70fe8c874c2308527a81c739c1beaa557e3330fc7003b4593b76b29a9b6a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a35BC.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a35BC.bat
        • Size 902B
        • SHA256 aaecff16f6130e6309ca7256b82c8385a95f51bb3a58b4eaf80ca5b669527ed3
        • MD5 SHA1 SHA512 TLSH

        2026-09-03_f42f5bc2367e4d755b210dccc62e90c0_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-09-03_f42f5bc2367e4d755b210dccc62e90c0_cobalt-strike_elex_hijackloader_icedid_njrat_vidar.exe.exe
        • Size 270KB
        • SHA256 854c67dfef3072d6bad0cad9f581874cb1f42bfd9e4efc2c8468021a0bf2f78d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 89KB
        • SHA256 fab7c8b424814eb005cccbacdc95a4b52371e9bf9e0a1394324abbf3a7610a35
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

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

        memory/2648-17-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/2784-19-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/2784-968-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/2784-1261-0x0000000000400000-0x0000000000425000-memory.dmp

        memory/4060-10-0x0000000000400000-0x0000000000425000-memory.dmp