Analysis

  • max time kernel
    115s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    01-03-2022 18:14

General

  • Target

    f0340ac2a3eb737c9842542de85cd7f0eda9469f55c6f8c6419055f1a82a8af2.exe

  • Size

    274KB

  • MD5

    84a1932e30c859e08077728d34f7dd74

  • SHA1

    5de9345885356fb54f47957310619bfcd36c0c6f

  • SHA256

    f0340ac2a3eb737c9842542de85cd7f0eda9469f55c6f8c6419055f1a82a8af2

  • SHA512

    2bfe5598509cebae5636fac2eca3000e9390b5152621562584077433709d98bc67dfa4cdf9cdebff3d5cd0a29351a445078113603885483d7d58aac38ba7e496

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/943953361051480117/bY4XtF54sBnlCQtX2e-fW-LWeLydoy2U3T2UdT-0mQglWZI4GyB_rry_NrQI2fJJsyVP

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\f0340ac2a3eb737c9842542de85cd7f0eda9469f55c6f8c6419055f1a82a8af2.exe
    "C:\Users\Admin\AppData\Local\Temp\f0340ac2a3eb737c9842542de85cd7f0eda9469f55c6f8c6419055f1a82a8af2.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3668

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3668-130-0x000002100A0E0000-0x000002100A12A000-memory.dmp

    Filesize

    296KB

  • memory/3668-131-0x00007FFB05963000-0x00007FFB05965000-memory.dmp

    Filesize

    8KB

  • memory/3668-132-0x000002100A4A0000-0x000002100A4A2000-memory.dmp

    Filesize

    8KB