Analysis

  • max time kernel
    127s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/12/2023, 16:17

General

  • Target
    deadsense.exe
  • Size 274KB
  • Sample231201-trnnsadf35
  • SHA256 a35b29189e4ea69890b73e5c64a26a3badc61b9e2084ddfa1a959bc6241ff1dd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • 44caliber

C2
  • https://discord.com/api/webhooks/1106246820465754193/PhLXU_8QVd9PKEsWp1wYfiuAgulXvdo3vNtxDX_F2rZvdBoVeobiSd4lhoRwXHxlyOwF

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Reads user/profile data of web browsers 2 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\deadsense.exe
    "C:\Users\Admin\AppData\Local\Temp\deadsense.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2452

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        Process.txt

        • Path C:\Users\Admin\AppData\Roaming\44\Process.txt
        • Size 1KB
        • SHA256 29e1a2b154541b0ddac394fa1808d204fed35287e87ee18acc97d14086c2f3c7
        • MD5 SHA1 SHA512

        memory/2452-0-0x000001F75FDF0000-0x000001F75FE3A000-memory.dmp

        memory/2452-29-0x00007FFA67D70000-0x00007FFA68831000-memory.dmp

        memory/2452-30-0x000001F7619A0000-0x000001F7619B0000-memory.dmp

        memory/2452-32-0x00007FFA67D70000-0x00007FFA68831000-memory.dmp

        memory/2452-33-0x000001F77A5A0000-0x000001F77A749000-memory.dmp

        memory/2452-34-0x000001F7619A0000-0x000001F7619B0000-memory.dmp

        memory/2452-122-0x000001F77A5A0000-0x000001F77A749000-memory.dmp

        memory/2452-130-0x000001F77A5A0000-0x000001F77A749000-memory.dmp

        memory/2452-131-0x00007FFA67D70000-0x00007FFA68831000-memory.dmp