Analysis

  • max time kernel
    119s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    01-03-2022 18:12

General

  • Target

    9a07408e7914dbaac53d23756d2471b9e6a781d993cbe34a61b6dbb50651c2e8.exe

  • Size

    274KB

  • MD5

    8dbfe1b50dc3a2270110201d54adff0a

  • SHA1

    71504492a77bb56acfdb35008d667d51d2b43c7e

  • SHA256

    9a07408e7914dbaac53d23756d2471b9e6a781d993cbe34a61b6dbb50651c2e8

  • SHA512

    864ea5f844723c12d506e1704dc3331131ffb702df9e6bfa555af18d9b536affe39465e3b0ddf7c28bac27d0e0f54e3672d316a5e341bf2549bb78fdf6aa0a9a

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/940311939115016313/WAo7Di7NoH_OzgcUfYlj6OV8WmrOYG24yfbOy1uT8znuGIEPOhhcWIgtRBfqinwZXSt5

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 1 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\9a07408e7914dbaac53d23756d2471b9e6a781d993cbe34a61b6dbb50651c2e8.exe
    "C:\Users\Admin\AppData\Local\Temp\9a07408e7914dbaac53d23756d2471b9e6a781d993cbe34a61b6dbb50651c2e8.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1632

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1632-55-0x000007FEF4E33000-0x000007FEF4E34000-memory.dmp

    Filesize

    4KB

  • memory/1632-56-0x0000000000A20000-0x0000000000A6A000-memory.dmp

    Filesize

    296KB

  • memory/1632-57-0x000000001B330000-0x000000001B332000-memory.dmp

    Filesize

    8KB