Analysis

  • max time kernel
    149s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/05/2026, 17:19

General

  • Target
    Insidious.exe
  • Size 274KB
  • Sample260507-vv8nssf16s
  • SHA256 1ef4869be8f192f1361f01eb3bb2f5f90931d9e3df0ac1b9873c15d6eec6de16
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • 44caliber

C2
  • https://discord.com/api/webhooks/1501995783866679459/X5lKQOe0Cpm5CyPstV9Uvq3vctS783nMljUVG_fYSLLxuPerOBGOmL-d8ufCnh6dZs3A

Signatures

  • Family: 44Caliber

    An open source infostealer written in C#.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Insidious.exe
    "C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4396

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        Process.txt

        • Path C:\ProgramData\44\Process.txt
        • Size 734B
        • SHA256 35458dfccce7d1c97fed8639521c2d02285d7ff70aa35eca0d1021abb41cd644
        • MD5 SHA1 SHA512 TLSH

        Process.txt

        • Path C:\ProgramData\44\Process.txt
        • Size 1KB
        • SHA256 31201670f901492dcec044f740617c2555757bb6d64b371a7156f449da24d4d2
        • MD5 SHA1 SHA512 TLSH

        memory/4396-0-0x000001B75C290000-0x000001B75C2DA000-memory.dmp

        memory/4396-1-0x000001B7767B0000-0x000001B7767C0000-memory.dmp

        memory/4396-106-0x000001B75C680000-0x000001B75C68C000-memory.dmp