Analysis

  • max time kernel
    129s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    01/03/2022, 18:13

General

  • Target
    cdd407dd860f8210fb50025130bbfd7371228750c1e3a1b16b6929cc314df887.exe
  • Size 274KB
  • Sample220301-wt77bacffj
  • SHA256 cdd407dd860f8210fb50025130bbfd7371228750c1e3a1b16b6929cc314df887
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • 44caliber

C2
  • https://discord.com/api/webhooks/941385512646750268/UCKa4QusV4sl-ZlUe9P2KixgpDTNi6YPhenW1lF7ySWWSwpSUvmDsMY-duLhQIJ0wSpF

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\cdd407dd860f8210fb50025130bbfd7371228750c1e3a1b16b6929cc314df887.exe
    "C:\Users\Admin\AppData\Local\Temp\cdd407dd860f8210fb50025130bbfd7371228750c1e3a1b16b6929cc314df887.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1516

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1516-130-0x00000228F51C0000-0x00000228F520A000-memory.dmp

        memory/1516-132-0x00000228F6D70000-0x00000228F6D72000-memory.dmp

        memory/1516-131-0x00007FF936F63000-0x00007FF936F65000-memory.dmp