Resubmissions

09/08/2024, 14:50

240809-r7sxbssalp

09/08/2024, 14:35

240809-rx9r4awakb10

09/08/2024, 14:34

240809-rxj7fawajg10

Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    09/08/2024, 14:35

General

  • Target
    SolaraBootstrapper.exe
  • Size 303KB
  • Sample240809-rx9r4awakb
  • SHA256 12a8d265fe2c0fb139d2dc9994ebdfaf7aea93a2ecc18dc4e132f1a04d36eda6
  • MD5 SHA1 SHA512 SSDEEP

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
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 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
    • Suspicious use of WriteProcessMemory
    PID:984
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 984 -s 1028
      2⤵
        PID:2716

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/984-0-0x000007FEF57D3000-0x000007FEF57D4000-memory.dmp

          memory/984-1-0x0000000000CA0000-0x0000000000CF2000-memory.dmp

          memory/984-20-0x000007FEF57D0000-0x000007FEF61BC000-memory.dmp

          memory/984-21-0x000007FEF57D3000-0x000007FEF57D4000-memory.dmp

          memory/984-22-0x000007FEF57D0000-0x000007FEF61BC000-memory.dmp

          memory/984-23-0x000007FEF57D0000-0x000007FEF61BC000-memory.dmp