Overview

overview

10

Static

static

3

2026-07-22...ar.exe

windows10-2004-x64

10

2026-07-22...ar.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/07/2026, 16:46

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General

  • Target
    2026-07-22_f0fcb86a9e9b21657c6151d34fa310d8_akira_cobalt-strike_elex_glassworm_icedid_luca-stealer_njrat_remcos_stealc_vidar.exe
  • Size 6.3MB
  • Sample260722-vaa7ssdk2t
  • SHA256 21c30af486c5dc7ea3e49bd06e1d7230d1327e8841a386236d7b5ed364db1264
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoverymofksyspersistenceworm

Malware Config

Signatures

  • Family: Mofksys

    Mofksys is a worm written in VisualBasic.

    wormmofksys
  • Detects Mofksys worm 5 IoCs
  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
    persistence
  • Modifies visibility of hidden/system files in Explorer 2 TTPs 2 IoCs
    defense_evasion
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Executes dropped EXE 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-07-22_f0fcb86a9e9b21657c6151d34fa310d8_akira_cobalt-strike_elex_glassworm_icedid_luca-stealer_njrat_remcos_stealc_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-22_f0fcb86a9e9b21657c6151d34fa310d8_akira_cobalt-strike_elex_glassworm_icedid_luca-stealer_njrat_remcos_stealc_vidar.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4344
    • \??\c:\users\admin\appdata\local\temp\2026-07-22_f0fcb86a9e9b21657c6151d34fa310d8_akira_cobalt-strike_elex_glassworm_icedid_luca-stealer_njrat_remcos_stealc_vidar.exe 
      c:\users\admin\appdata\local\temp\2026-07-22_f0fcb86a9e9b21657c6151d34fa310d8_akira_cobalt-strike_elex_glassworm_icedid_luca-stealer_njrat_remcos_stealc_vidar.exe 
      2⤵
      • Executes dropped EXE
      PID:4356
    • C:\Users\Admin\AppData\Local\icsys.icn.exe
      C:\Users\Admin\AppData\Local\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4432
      • \??\c:\windows\system\explorer.exe
        c:\windows\system\explorer.exe
        3⤵
        • Modifies WinLogon for persistence
        • Modifies visibility of hidden/system files in Explorer
        • Boot or Logon Autostart Execution: Active Setup
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4548
        • \??\c:\windows\system\spoolsv.exe
          c:\windows\system\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4968
          • \??\c:\windows\system\svchost.exe
            c:\windows\system\svchost.exe
            5⤵
            • Modifies WinLogon for persistence
            • Modifies visibility of hidden/system files in Explorer
            • Boot or Logon Autostart Execution: Active Setup
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2276
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:4288
            • C:\Windows\SysWOW64\at.exe
              at 17:48 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4936
            • C:\Windows\SysWOW64\at.exe
              at 17:49 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:2872
            • C:\Windows\SysWOW64\at.exe
              at 17:50 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:1864

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        2026-07-22_f0fcb86a9e9b21657c6151d34fa310d8_akira_cobalt-strike_elex_glassworm_icedid_luca-stealer_njrat_remcos_stealc_vidar.exe 
        • Path C:\Users\Admin\AppData\Local\Temp\2026-07-22_f0fcb86a9e9b21657c6151d34fa310d8_akira_cobalt-strike_elex_glassworm_icedid_luca-stealer_njrat_remcos_stealc_vidar.exe 
        • Size 6.1MB
        • SHA256 9f6981854eced0069649c5f7bbc16b93d26c877279b92e548ce4db275985d9fc
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        icsys.icn.exe
        • Path C:\Users\Admin\AppData\Local\icsys.icn.exe
        • Size 206KB
        • SHA256 51f4df02b9318be587bd68763182f6205d58f5fb728e8a9028bcfa0a1d0d9035
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        mrsys.exe
        • Path C:\Users\Admin\AppData\Roaming\mrsys.exe
        • Size 206KB
        • SHA256 c2ff5233c889ac40c87835a5f413c4215dbd8be17a707956c221f4d214814660
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        explorer.exe
        • Path C:\Windows\System\explorer.exe
        • Size 206KB
        • SHA256 f50b1d4a165ab3d016f4992f75caf5acd1f6b4169dcafe5c5637aa2890878a9c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        spoolsv.exe
        • Path C:\Windows\System\spoolsv.exe
        • Size 207KB
        • SHA256 512e54d5c181f3ea09c7c9fbc64fa3484fda421f0d936d15431b62e4bd08abbc
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        svchost.exe
        • Path C:\Windows\System\svchost.exe
        • Size 206KB
        • SHA256 3f888653e489236a8b0452fd5b8b0e6c45376facad7803afacfb3ec0353c36b9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download