Analysis

  • max time kernel
    101s
  • max time network
    14s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    12-07-2021 14:59

General

  • Target

    ebb56a6e94862c64dd204246376819f8.exe

  • Size

    933KB

  • MD5

    ebb56a6e94862c64dd204246376819f8

  • SHA1

    b4be3ca5db209dd913f9c07fa54578fcd5b45b32

  • SHA256

    f66e5f355ec3477cc1be168b9fec2f85d2c58106460d988dd96855f8c78b3fe8

  • SHA512

    e4c538a6063133485f13a1831eac86fd96eb689ba9fff8f0306402bdb6c9f013cdc8ac5a6f46fdf97397da679e1ee4c5af655582c9229192e88546e57b6e9926

Malware Config

Signatures

  • A310logger

    A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

  • StormKitty

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

  • StormKitty Payload 3 IoCs
  • A310logger Executable 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 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: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ebb56a6e94862c64dd204246376819f8.exe
    "C:\Users\Admin\AppData\Local\Temp\ebb56a6e94862c64dd204246376819f8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:772
    • C:\Users\Admin\AppData\Local\Temp\ebb56a6e94862c64dd204246376819f8.exe
      "C:\Users\Admin\AppData\Local\Temp\ebb56a6e94862c64dd204246376819f8.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:300
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\PASSWORDSNET4.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\PASSWORDSNET4.exe
        3⤵
        • Executes dropped EXE
        • Checks processor information in registry
        PID:528
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\CREDITCARDNET4.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\CREDITCARDNET4.exe
        3⤵
        • Executes dropped EXE
        PID:1220
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\CONTACTSNET4.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\CONTACTSNET4.exe
        3⤵
        • Executes dropped EXE
        PID:672

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/300-66-0x0000000000400000-0x000000000044D000-memory.dmp

    Filesize

    308KB

  • memory/300-70-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

    Filesize

    8KB

  • memory/300-77-0x00000000002F0000-0x00000000002F2000-memory.dmp

    Filesize

    8KB

  • memory/528-75-0x0000000000340000-0x0000000000341000-memory.dmp

    Filesize

    4KB

  • memory/672-88-0x0000000000980000-0x0000000000981000-memory.dmp

    Filesize

    4KB

  • memory/772-60-0x0000000000D60000-0x0000000000D61000-memory.dmp

    Filesize

    4KB

  • memory/772-65-0x0000000000480000-0x00000000004D3000-memory.dmp

    Filesize

    332KB

  • memory/772-64-0x00000000058D0000-0x0000000005964000-memory.dmp

    Filesize

    592KB

  • memory/772-63-0x0000000000270000-0x0000000000280000-memory.dmp

    Filesize

    64KB

  • memory/772-62-0x0000000004EF0000-0x0000000004EF1000-memory.dmp

    Filesize

    4KB

  • memory/1220-82-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

    Filesize

    4KB