Analysis

  • max time kernel
    142s
  • max time network
    76s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-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 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\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:2008
    • 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:1332
      • 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:916

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/916-72-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/916-79-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/916-77-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/916-74-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1332-63-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1332-81-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1332-61-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1332-82-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1332-65-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1332-68-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/1332-60-0x0000000000400000-0x0000000000421000-memory.dmp

          Filesize

          132KB

        • memory/2008-59-0x0000000004A50000-0x0000000004A78000-memory.dmp

          Filesize

          160KB

        • memory/2008-57-0x0000000000B40000-0x0000000000B4C000-memory.dmp

          Filesize

          48KB

        • memory/2008-56-0x0000000000470000-0x0000000000494000-memory.dmp

          Filesize

          144KB

        • memory/2008-55-0x0000000075761000-0x0000000075763000-memory.dmp

          Filesize

          8KB

        • memory/2008-58-0x0000000004F10000-0x0000000004F76000-memory.dmp

          Filesize

          408KB

        • memory/2008-54-0x0000000000E30000-0x0000000000ED4000-memory.dmp

          Filesize

          656KB