Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    19/04/2026, 03:45

General

  • Target
    2026-04-19_8572c65171cbb7fb1af91c5922abff41_akira_cobalt-strike_elex_hijackloader.exe
  • Size 770KB
  • Sample260419-ea7m1ahs7v
  • SHA256 250073027122e047e1df8d3588c02f4b7e74def4f553f7423793c28e46707364
  • 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\2026-04-19_8572c65171cbb7fb1af91c5922abff41_akira_cobalt-strike_elex_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-19_8572c65171cbb7fb1af91c5922abff41_akira_cobalt-strike_elex_hijackloader.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:4728
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4732
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2104
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a213F.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4636
      • C:\Users\Admin\AppData\Local\Temp\2026-04-19_8572c65171cbb7fb1af91c5922abff41_akira_cobalt-strike_elex_hijackloader.exe
        "C:\Users\Admin\AppData\Local\Temp\2026-04-19_8572c65171cbb7fb1af91c5922abff41_akira_cobalt-strike_elex_hijackloader.exe"
        3⤵
        • Executes dropped EXE
        PID:4936
    • 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:3856
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4444
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4984
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:6088
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:824
  • 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:3784

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXBBEE.tmp

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RCXBBEE.tmp
        • Size 156KB
        • SHA256 9a7c2aa86894ba443a5bb542e4f2806f09e5877fec2b8005b0055e8816f134b7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXBE43.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXBE43.tmp
        • Size 94KB
        • SHA256 d8d93131073755f109a310d912b7cc1bf5987ba277d9906c58a6df1698059270
        • MD5 SHA1 SHA512 SSDEEP TLSH

        DisabledGoogleUpdate.exe.Exe

        • Path C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe.Exe
        • Size 5.8MB
        • SHA256 26c55cda3bc8eba846f0dfb87707e177af3bfcc64c5e5288ee43e621b1649b00
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC14E.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\RCXC14E.tmp
        • Size 103KB
        • SHA256 742b2019651362fe67da7a19288776610f4253de8760ea42bd14c35e66d63112
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC041.tmp

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\RCXC041.tmp
        • Size 1.9MB
        • SHA256 51fd21535f44d2946f04ea21eb6082d2503d1ed655258efeec065e42f6d67873
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7z.exe.Exe

        • Path C:\Program Files\7-Zip\7z.exe.Exe
        • Size 642KB
        • SHA256 9c7b0a2a82b56fef2b494c76c4b45c77ecf827950d60dd5c4d226903b1b9f78e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB039.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXB039.tmp
        • Size 92KB
        • SHA256 e96d91c42307a0306bcfc6492584e422806e1bc8e8c2f71686233cd08d6485b2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB37A.tmp

        • Path C:\Program Files\Mozilla Firefox\RCXB37A.tmp
        • Size 91KB
        • SHA256 a34c478094d879ccd639c3fdebc5daeaf0f854d2b38ff3f62d4f3c43774ec551
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXB3BA.tmp

        • Path C:\Program Files\Mozilla Firefox\uninstall\RCXB3BA.tmp
        • Size 100KB
        • SHA256 9dcc53ffac89bd4a5d65f07e3506a7bf2716e69fdf30765fbc11361ec114a5be
        • MD5 SHA1 SHA512 SSDEEP TLSH

        vlc.exe.Exe

        • Path C:\Program Files\VideoLAN\VLC\vlc.exe.Exe
        • Size 1.0MB
        • SHA256 f16204ea3dc371b62cffa51904d2b32967b11fd5f0f7e5d39f3602606923edae
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC80D.tmp

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\RCXC80D.tmp
        • Size 545KB
        • SHA256 869f9c41102cf9c89ae1dbe3efa10817d993678021ecfc7552e992c245eacf12
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a213F.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a213F.bat
        • Size 824B
        • SHA256 19dbfc5e3d31ec54a14258d298454c66e8f99ff9414733e1bef8820928f3312e
        • MD5 SHA1 SHA512 TLSH

        2026-04-19_8572c65171cbb7fb1af91c5922abff41_akira_cobalt-strike_elex_hijackloader.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-04-19_8572c65171cbb7fb1af91c5922abff41_akira_cobalt-strike_elex_hijackloader.exe.exe
        • Size 677KB
        • SHA256 fb6c0990e4976b9a98320e0912842ec11aa380a0f237affd35ef9ad2e7667905
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 93KB
        • SHA256 843eee5d0b6cc8c034d3cac5c60d955d4a92165c04a7ef56f817d88d785032c2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

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

        memory/3784-19-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3856-743-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3856-10-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3856-22-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3856-1255-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/4728-0-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/4728-12-0x0000000000400000-0x0000000000429000-memory.dmp