Analysis

  • max time kernel
    2s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-12-2023 18:58

General

  • Target

    864834b04458cd1d9962be39ff55aee3.exe

  • Size

    275KB

  • MD5

    864834b04458cd1d9962be39ff55aee3

  • SHA1

    984bcaf6e8ed6cc94937116556f8f585cb0f5417

  • SHA256

    f6e4515313b2edc227f40a55d731479f7ef7562b911ffc3f8058bfcf979d544b

  • SHA512

    8518bdc620c8de8f41f2b05aefa81114c0bcba4f7d03ebdcede97edffa1c6c4d7e57bbc0da4fd26642e601a470de91124ac260e50df2c64ec1e95aeb5000ceb2

  • SSDEEP

    6144:qf+BLtABPD9FBWKXsSlrVPl/9rHxlqQy8HRA190DuH:oFsSlrVPlJxlNyh19DH

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/870581345427005441/UjrKmnTLwya1NxpTUmifD6bHBh3H7Mn_MRUKUdVkdaAZA7DCMhJguLjz7KVW5wv2RDfj

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\864834b04458cd1d9962be39ff55aee3.exe
    "C:\Users\Admin\AppData\Local\Temp\864834b04458cd1d9962be39ff55aee3.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2560-0-0x00000000006A0000-0x00000000006EC000-memory.dmp

    Filesize

    304KB

  • memory/2560-29-0x00007FFB2ECA0000-0x00007FFB2F761000-memory.dmp

    Filesize

    10.8MB

  • memory/2560-33-0x000000001B410000-0x000000001B420000-memory.dmp

    Filesize

    64KB

  • memory/2560-127-0x00007FFB2ECA0000-0x00007FFB2F761000-memory.dmp

    Filesize

    10.8MB