Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/08/2022, 09:40

General

  • Target

    Halkbank_Ekstre_20210706_142426_2309801.doc.exe

  • Size

    628KB

  • MD5

    e5399f1591e286e34e46bf3d168f2cca

  • SHA1

    38d5b0867cebb5e49de67e42134d3ca53f1f4abc

  • SHA256

    1fa00eab8fe9ab441e2bbc0be43c34a77724c3a0b580b733ecdbe89a3e0d03b7

  • SHA512

    2120419cc750b7222e28c24f70828956ed377275d1ff9a9791911cc5764994572ccc5f7910a1051d8739cf101103648cd0027a752664326dad212e814f4bbebb

Malware Config

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
  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe
    "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3984
    • C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe
      "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"
      2⤵
        PID:1448
      • C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe
        "C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20210706_142426_2309801.doc.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4616
        • 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:1224

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1224-145-0x0000000000BB0000-0x0000000000BCA000-memory.dmp

            Filesize

            104KB

          • memory/3984-133-0x0000000005700000-0x000000000570A000-memory.dmp

            Filesize

            40KB

          • memory/3984-134-0x0000000007E60000-0x0000000007EFC000-memory.dmp

            Filesize

            624KB

          • memory/3984-135-0x0000000008170000-0x00000000081D6000-memory.dmp

            Filesize

            408KB

          • memory/3984-130-0x0000000000C20000-0x0000000000CC4000-memory.dmp

            Filesize

            656KB

          • memory/3984-132-0x0000000005650000-0x00000000056E2000-memory.dmp

            Filesize

            584KB

          • memory/3984-131-0x0000000005B20000-0x00000000060C4000-memory.dmp

            Filesize

            5.6MB

          • memory/4616-138-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/4616-140-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/4616-143-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB

          • memory/4616-146-0x0000000000400000-0x0000000000421000-memory.dmp

            Filesize

            132KB