Analysis

  • max time kernel
    84s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    01-03-2022 18:12

General

  • Target

    969e340f9996ca29b56456846b8702bbd83e41384f32411d26f132ffa88a4c22.exe

  • Size

    539KB

  • MD5

    e4f7f75510cda5bef47f9592fd71dade

  • SHA1

    cce6618248fb1fd391704a851551fc4e6262acfd

  • SHA256

    969e340f9996ca29b56456846b8702bbd83e41384f32411d26f132ffa88a4c22

  • SHA512

    664b46bdf5fb5fb8df5a0e997e887ed48736027d3ccfa88d5c094875a2e7dcc8f0bede3e155b447dd131778bceaf498cddc672450730946c381f28715af4ecfc

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/932201764764147802/mwMlKS9HLPkYmtPCqZav0VpATPW5VqmEzplBqEZVE9Fp1-EHpr6uNlIUcjh7TSGGncnk

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\969e340f9996ca29b56456846b8702bbd83e41384f32411d26f132ffa88a4c22.exe
    "C:\Users\Admin\AppData\Local\Temp\969e340f9996ca29b56456846b8702bbd83e41384f32411d26f132ffa88a4c22.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4020

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4020-130-0x00000000003F0000-0x000000000047C000-memory.dmp

    Filesize

    560KB

  • memory/4020-131-0x00007FFC4F683000-0x00007FFC4F685000-memory.dmp

    Filesize

    8KB

  • memory/4020-132-0x000000001C6C0000-0x000000001C6C2000-memory.dmp

    Filesize

    8KB