Analysis

  • max time kernel
    126s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19-10-2022 13:01

General

  • Target

    4b28d8e218f5dfe20541b32fca297074.exe

  • Size

    881KB

  • MD5

    4b28d8e218f5dfe20541b32fca297074

  • SHA1

    a5b715011f2bd3229e3acf3d88131a61043eba1a

  • SHA256

    ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc

  • SHA512

    04fac1bf2cb45ea967ddf9e5cf34fc1582b094fd0d0423ba6f56e889fb9e58b6b85f848201855446f540de19b8665fef1bc5d5f07face17955682cbcad4707ac

  • SSDEEP

    12288:rMXcyHcfKPLcYdXQawrPI2F2QVokACzkRj8U8oxfEunphMnX:QNcfMLciXQlrR2QukACgRHM

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5576673774:AAF__hFRh9bcJV72HkFb-9eZR9JNNyuOmFM/sendMessage?chat_id=1194722650

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
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b28d8e218f5dfe20541b32fca297074.exe
    "C:\Users\Admin\AppData\Local\Temp\4b28d8e218f5dfe20541b32fca297074.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:576
    • C:\Users\Admin\AppData\Local\Temp\4b28d8e218f5dfe20541b32fca297074.exe
      "C:\Users\Admin\AppData\Local\Temp\4b28d8e218f5dfe20541b32fca297074.exe"
      2⤵
        PID:1516
      • C:\Users\Admin\AppData\Local\Temp\4b28d8e218f5dfe20541b32fca297074.exe
        "C:\Users\Admin\AppData\Local\Temp\4b28d8e218f5dfe20541b32fca297074.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1472
        • 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:680

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/576-55-0x0000000075911000-0x0000000075913000-memory.dmp

      Filesize

      8KB

    • memory/576-56-0x0000000000460000-0x0000000000478000-memory.dmp

      Filesize

      96KB

    • memory/576-57-0x00000000004A0000-0x00000000004AC000-memory.dmp

      Filesize

      48KB

    • memory/576-58-0x0000000004130000-0x00000000041B0000-memory.dmp

      Filesize

      512KB

    • memory/576-59-0x0000000000870000-0x000000000089A000-memory.dmp

      Filesize

      168KB

    • memory/576-54-0x0000000000020000-0x0000000000102000-memory.dmp

      Filesize

      904KB

    • memory/680-73-0x0000000000090000-0x00000000000AA000-memory.dmp

      Filesize

      104KB

    • memory/680-80-0x0000000000090000-0x00000000000AA000-memory.dmp

      Filesize

      104KB

    • memory/680-78-0x0000000000090000-0x00000000000AA000-memory.dmp

      Filesize

      104KB

    • memory/680-75-0x0000000000090000-0x00000000000AA000-memory.dmp

      Filesize

      104KB

    • memory/1472-63-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB

    • memory/1472-72-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB

    • memory/1472-68-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB

    • memory/1472-65-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB

    • memory/1472-61-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB

    • memory/1472-60-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB

    • memory/1472-82-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB