Analysis

  • max time kernel
    93s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/02/2024, 22:10

General

  • Target
    a2d7e6834fe7510524bb96023fe12f81.exe
  • Size 599KB
  • Sample240224-13lrwsff36
  • SHA256 b5a965edeb39450f6a9e30cf9d736d4393a8d162fa4ee8872607187f22876e65
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

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\a2d7e6834fe7510524bb96023fe12f81.exe
    "C:\Users\Admin\AppData\Local\Temp\a2d7e6834fe7510524bb96023fe12f81.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4200

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 224B
        • SHA256 dc2f5a5407fbd372deb83b79290713ef20a4a4cbade345c83986b94ac2bab677
        • MD5 SHA1 SHA512

        Process.txt

        • Path C:\Users\Admin\AppData\Roaming\44\Process.txt
        • Size 740B
        • SHA256 30f58e98a028b818e80bd008526389a31f8e31c991f6629017d46b4fbacab58e
        • MD5 SHA1 SHA512

        Process.txt

        • Path C:\Users\Admin\AppData\Roaming\44\Process.txt
        • Size 1KB
        • SHA256 0f8aaf82f9478c199ad1ffba740d6023b032321a199a2ab016b9daafdf634f49
        • MD5 SHA1 SHA512

        memory/4200-0-0x00000000004C0000-0x000000000055C000-memory.dmp

        memory/4200-14-0x00007FFF85E00000-0x00007FFF868C1000-memory.dmp

        memory/4200-28-0x000000001B200000-0x000000001B210000-memory.dmp

        memory/4200-126-0x00007FFF85E00000-0x00007FFF868C1000-memory.dmp