Analysis

  • max time kernel
    150s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-04-2023 11:26

General

  • Target

    SOLICITU.exe

  • Size

    176KB

  • MD5

    6bbfbd022b3599e8e6d8876c4566073b

  • SHA1

    b56a563f0deba1891f32866bf9385f91b3589bc0

  • SHA256

    3f6604df64307223a9a72e68f28c14d3cbf5af90549667839622b8e3490fbe8b

  • SHA512

    55e842618c3a9989c22fcbeff61c149f2e16e524ab23f7a28903b852ddbbe40defa9ab7931c06865c0bfd287a8a38b41032dcc62bd3aa144b6d84838b71a9ef7

  • SSDEEP

    3072:6nI8rM4omSUr7Boj2PjY5Yo22cEuXTWcv2yMEmzQxcfxvXX4:6UunrHPym2STW0irn4

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5627356603:AAG-Mx0TbSHRRW6IwndrpX3VLZdhd6C-Zac/sendMessage?chat_id=5472437377

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SOLICITU.exe
    "C:\Users\Admin\AppData\Local\Temp\SOLICITU.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4268
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Aspnet_compiler.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        3⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2660

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1064-134-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1064-138-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1064-142-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1064-147-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2660-141-0x0000000000B30000-0x0000000000B4A000-memory.dmp

    Filesize

    104KB

  • memory/2660-143-0x00000000050E0000-0x0000000005146000-memory.dmp

    Filesize

    408KB

  • memory/2660-144-0x0000000005270000-0x0000000005280000-memory.dmp

    Filesize

    64KB

  • memory/2660-145-0x0000000005950000-0x00000000059EC000-memory.dmp

    Filesize

    624KB

  • memory/4268-133-0x0000025C0B430000-0x0000025C0B45C000-memory.dmp

    Filesize

    176KB

  • memory/4268-136-0x0000025C258E0000-0x0000025C25A2E000-memory.dmp

    Filesize

    1.3MB