Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/04/2026, 21:28

General

  • Target
    2026-04-22_12e76784a83a3f0c58ac88a212976f93_akira_cobalt-strike_elex_hijackloader.exe
  • Size 770KB
  • Sample260422-1bpdpscs7x
  • SHA256 7f3fd1ed4dd6fd78e5943d8bd0f632539d604df6f46643de5c1290455ad23d44
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Renames multiple (259) 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\2026-04-22_12e76784a83a3f0c58ac88a212976f93_akira_cobalt-strike_elex_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-22_12e76784a83a3f0c58ac88a212976f93_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:3452
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4176
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1964
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a42D0.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2540
      • C:\Users\Admin\AppData\Local\Temp\2026-04-22_12e76784a83a3f0c58ac88a212976f93_akira_cobalt-strike_elex_hijackloader.exe
        "C:\Users\Admin\AppData\Local\Temp\2026-04-22_12e76784a83a3f0c58ac88a212976f93_akira_cobalt-strike_elex_hijackloader.exe"
        3⤵
        • Executes dropped EXE
        PID:3972
    • 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:2420
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2740
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5612
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1580
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1968
  • 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:4428

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXDCB8.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXDCB8.tmp
        • Size 94KB
        • SHA256 0ba97d1ae2fbc4086af5b5d3ef246638e40e6e7261b692ae23b01f980dc2431a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDEBD.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\RCXDEBD.tmp
        • Size 103KB
        • SHA256 fb7be5801cadc631d7c49bad771df3cb0e3ca6aa94a45ef12b857403bef63f98
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXDD8B.tmp

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\RCXDD8B.tmp
        • Size 118KB
        • SHA256 838cdd00888b93650980c37b0ccaedf6b5287d543465db207fb6cafc03fda169
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE018.tmp

        • Path C:\Program Files (x86)\Mozilla Maintenance Service\RCXE018.tmp
        • Size 100KB
        • SHA256 d20c77d277ca3dec12e9eafed27414ce2dda8e016a10ca441b40d5f65bde0b67
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7z.exe.Exe

        • Path C:\Program Files\7-Zip\7z.exe.Exe
        • Size 642KB
        • SHA256 2756e082e854c013a4350e9b1d8e705b854106922b04f69087ae2902a60387f8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD00F.tmp

        • Path C:\Program Files\7-Zip\RCXD00F.tmp
        • Size 91KB
        • SHA256 0b5f07a3c3bb9c3d570cee8dfde910d86b2fa7ffc7693d115e0ef766a53cd56c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXD110.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXD110.tmp
        • Size 92KB
        • SHA256 5c6bf21bce4c7e4de760733795feb6c05d74c6aa7d5080a91d294592e929f3ce
        • MD5 SHA1 SHA512 SSDEEP TLSH

        OfficeClickToRun.exe.Exe

        • Path C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe.Exe
        • Size 4.3MB
        • SHA256 afda5a02dccc283d2d73fd22837c3741cda7ece308530ce721bf75438527a4aa
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SPREADSHEETCOMPARE.EXE.Exe

        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE.Exe
        • Size 554KB
        • SHA256 5f4ebeaa2f089cfeffa33e6b504aca548828be8d34a8f1e6026993aefcbcee69
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE49D.tmp

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\RCXE49D.tmp
        • Size 92KB
        • SHA256 9c4cf8e475a3984893098be99f86a75baa82d8de71e03b56df154edf2ab360e7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXE4DD.tmp

        • Path C:\ProgramData\Package Cache\{33d1fd90-4274-48a1-9bc1-97e33d9c2d6f}\RCXE4DD.tmp
        • Size 92KB
        • SHA256 9b000a385cd96ba679abb805c8aa39a8225c86812db854cde748b05a0d5d14c0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a42D0.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a42D0.bat
        • Size 824B
        • SHA256 a3ad098e7ab371e3c177b02654f79f1e13a4fb0307222793c8c36f2583594ee8
        • MD5 SHA1 SHA512 TLSH

        2026-04-22_12e76784a83a3f0c58ac88a212976f93_akira_cobalt-strike_elex_hijackloader.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-04-22_12e76784a83a3f0c58ac88a212976f93_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 cc617e4627bf0a6c0dc362a46b44112f72d93a0707a2ad400a6b96753550120f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

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

        memory/2420-1121-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/2420-19-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/2420-1264-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/3452-8-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/4428-16-0x0000000000400000-0x0000000000429000-memory.dmp