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Analysis

  • max time kernel
    89s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26/09/2022, 08:34

General

  • Target

    _220926_.EXE.exe

  • Size

    204KB

  • MD5

    1a6cd2ff652a3c9c909682a62fa6e25a

  • SHA1

    54a16855a8a48f4f847a0a8ca66a2f26b333b2cd

  • SHA256

    00bcf28771526c2f876a4135520a4eb5a373f6671ea6c94eea36ce2cccbc8e43

  • SHA512

    316d788ef92ee882d39dce5f8a61b34c783b61466b6f1682f1fcf055bdc2c290990abd1a93cdf9774616d32968e23acd8dfb609d6a4b8880110a8ef4f1298385

  • SSDEEP

    3072:8I42jI06VSyw9rPdTlYpw3BC/3MYxLXVnSCLr/nEayyGq:8z7yywlPdhYqxm3H5SC

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5641602090:AAFgkXeQEDF1Zq8nmUMQJA2TjfP0wsTJyeM/sendMessage?chat_id=1755939698

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • StormKitty

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

  • StormKitty payload 4 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 18 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\_220926_.EXE.exe
    "C:\Users\Admin\AppData\Local\Temp\_220926_.EXE.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1524
      • 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:952

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/952-72-0x00000000000D0000-0x00000000000EA000-memory.dmp

    Filesize

    104KB

  • memory/952-79-0x00000000000D0000-0x00000000000EA000-memory.dmp

    Filesize

    104KB

  • memory/952-77-0x00000000000D0000-0x00000000000EA000-memory.dmp

    Filesize

    104KB

  • memory/952-74-0x00000000000D0000-0x00000000000EA000-memory.dmp

    Filesize

    104KB

  • memory/1524-71-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1524-81-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1524-62-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1524-64-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1524-67-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1524-70-0x00000000762F1000-0x00000000762F3000-memory.dmp

    Filesize

    8KB

  • memory/1524-60-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1524-59-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/1784-54-0x0000000000370000-0x00000000003A4000-memory.dmp

    Filesize

    208KB

  • memory/1784-57-0x00000000003B0000-0x00000000003BC000-memory.dmp

    Filesize

    48KB

  • memory/1784-56-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/1784-55-0x00000000004C0000-0x00000000004C8000-memory.dmp

    Filesize

    32KB

  • memory/1784-58-0x00000000003C0000-0x00000000003C8000-memory.dmp

    Filesize

    32KB