Resubmissions

09-08-2024 14:35

240809-rx9r4awakb 10

09-08-2024 14:34

240809-rxj7fawajg 10

Analysis

  • max time kernel
    141s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-08-2024 14:34

General

  • Target

    SolaraBootstrapper.exe

  • Size

    303KB

  • MD5

    7553c649cdd15e01bc47cfa2dc88fdae

  • SHA1

    1ad33f546146e52d05e667f0907262c1e55cb958

  • SHA256

    12a8d265fe2c0fb139d2dc9994ebdfaf7aea93a2ecc18dc4e132f1a04d36eda6

  • SHA512

    b40c066725b3f9ece6f75dd11598ad73f702b608253a4fa990774d2a61433b7a8218e19c3f5b348b62d18f533069f0cb228bcd5904497e98cd8f77d94a9d1849

  • SSDEEP

    6144:k1E0T6MDdbICydeB1MnyCvG/9GzC6jmA1D0Kzp:k1z6yCvGFG+Y1Dtp

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1256365156401680444/Q4ybvTW8-P8cHM7v5CKOThKUJqTZ4f03jPUNC4To8TouPRnWl442RcsKLBOptm6uvg63

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1992-0-0x0000026AE9820000-0x0000026AE9872000-memory.dmp

    Filesize

    328KB

  • memory/1992-1-0x00007FFACED13000-0x00007FFACED15000-memory.dmp

    Filesize

    8KB

  • memory/1992-17-0x00007FFACED10000-0x00007FFACF7D1000-memory.dmp

    Filesize

    10.8MB

  • memory/1992-32-0x00007FFACED10000-0x00007FFACF7D1000-memory.dmp

    Filesize

    10.8MB