Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    05-04-2022 00:39

General

  • Target

    7335f630871bdc94e06188a1f0fd432e62fda760498ba0cfbccfd3b2ec2626ab.exe

  • Size

    170KB

  • MD5

    7a43bf93d5c1df0289e57152105162c9

  • SHA1

    3abb60159200859e3e22babcf12479766f7b0f78

  • SHA256

    7335f630871bdc94e06188a1f0fd432e62fda760498ba0cfbccfd3b2ec2626ab

  • SHA512

    4b8babe45c349cbcdaf7ec40d0a064f5b8f9a74dafc3a1d4583666b3fa857e148a4cdcc4a0851f73fa92b9cee8425a95413cf9833e7eca6bb0ab7ed0f91eb48f

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot5247464974:AAE4nAxJ7vaD4mfWmY-bGuO23tZg_Mi9B4I/sendMessage?chat_id=736679240

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • StormKitty

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

  • StormKitty Payload 1 IoCs
  • suricata: ET MALWARE StormKitty Data Exfil via Telegram

    suricata: ET MALWARE StormKitty Data Exfil via Telegram

  • Async RAT payload 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 8 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.

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7335f630871bdc94e06188a1f0fd432e62fda760498ba0cfbccfd3b2ec2626ab.exe
    "C:\Users\Admin\AppData\Local\Temp\7335f630871bdc94e06188a1f0fd432e62fda760498ba0cfbccfd3b2ec2626ab.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2652
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1932
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:3828
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:4536
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:3464
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4328
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:1184
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:1652

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • memory/1184-134-0x0000000000000000-mapping.dmp

            • memory/1652-135-0x0000000000000000-mapping.dmp

            • memory/1932-129-0x0000000000000000-mapping.dmp

            • memory/2652-125-0x0000000005840000-0x00000000058A6000-memory.dmp

              Filesize

              408KB

            • memory/2652-126-0x00000000063D0000-0x0000000006462000-memory.dmp

              Filesize

              584KB

            • memory/2652-127-0x0000000005633000-0x0000000005635000-memory.dmp

              Filesize

              8KB

            • memory/2652-128-0x0000000006A20000-0x0000000006FC4000-memory.dmp

              Filesize

              5.6MB

            • memory/2652-124-0x0000000000AF0000-0x0000000000B20000-memory.dmp

              Filesize

              192KB

            • memory/2652-137-0x0000000006690000-0x00000000066A2000-memory.dmp

              Filesize

              72KB

            • memory/2652-136-0x00000000064F0000-0x00000000064FA000-memory.dmp

              Filesize

              40KB

            • memory/3464-132-0x0000000000000000-mapping.dmp

            • memory/3828-130-0x0000000000000000-mapping.dmp

            • memory/4328-133-0x0000000000000000-mapping.dmp

            • memory/4536-131-0x0000000000000000-mapping.dmp