Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2023, 20:10

General

  • Target

    Servjjjer.exe

  • Size

    175KB

  • MD5

    5b3cfe226cbf4629f1bf59d9a8b644cb

  • SHA1

    709f112da624e832c9e257ffe68f7ad2cc08bb6f

  • SHA256

    6894c104c50fea8b20c9d459919854463fa2aad13165bb0650deb946fb3b7de7

  • SHA512

    485962e678cc88aecbf1f9028d55885f6290bf6ff33555b231938a1ae323ec06311963988fbae15466dc39249e3fadfe7e108e0d24ef54bc3fd858572d1384e9

  • SSDEEP

    3072:Qe8oX8Sb5KcXrtkkXmf/bDsvqtU+lLToChAP0UZ0b2gTLcwAqE+Wpor:pXtb5KcXr7XmfgqtjhAxZ0b2ko

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/bot5890094946:AAEYglD59tTB66C18AiuzpbBGVoAYux1-gc/sendMessage?chat_id=5969887379

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 written in C#.

  • Detects Redline Stealer samples 1 IoCs

    This rule detects the presence of Redline Stealer samples based on their unique strings.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • StormKitty

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

  • StormKitty payload 1 IoCs
  • 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 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Servjjjer.exe
    "C:\Users\Admin\AppData\Local\Temp\Servjjjer.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4088
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4916
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:4980
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:1584
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:4976
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1632
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:4772
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:756

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\Local\228814d66cd77b02b66fe83b7cd036e4\msgid.dat

                    Filesize

                    1B

                    MD5

                    cfcd208495d565ef66e7dff9f98764da

                    SHA1

                    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

                    SHA256

                    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

                    SHA512

                    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

                  • C:\Users\Admin\AppData\Local\283db8aab9978c482b6b34ce9843e6b5\Admin@OZADSVWH_en-US\Browsers\Firefox\Bookmarks.txt

                    Filesize

                    105B

                    MD5

                    2e9d094dda5cdc3ce6519f75943a4ff4

                    SHA1

                    5d989b4ac8b699781681fe75ed9ef98191a5096c

                    SHA256

                    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

                    SHA512

                    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

                  • C:\Users\Admin\AppData\Local\283db8aab9978c482b6b34ce9843e6b5\Admin@OZADSVWH_en-US\System\Process.txt

                    Filesize

                    4KB

                    MD5

                    621a97cca6d51929c81dc3b196ee34d8

                    SHA1

                    8ce17dd0017befa83533ef00c165ea3796a72beb

                    SHA256

                    ce21dc62e1c292a805a543e0641badca7cf5ec143ba4633723ff88940224f415

                    SHA512

                    bc27e3f4032ea61de30f31104ab6673e4389a84673f926faa84e6a98afa2871f7bcdfdc55f92c25d55f638da14cfe329d2e43a727a51be9040e72a8f8a9b9275

                  • memory/4088-133-0x0000000000FC0000-0x0000000000FF2000-memory.dmp

                    Filesize

                    200KB

                  • memory/4088-134-0x0000000005940000-0x0000000005950000-memory.dmp

                    Filesize

                    64KB

                  • memory/4088-135-0x0000000005CC0000-0x0000000005D26000-memory.dmp

                    Filesize

                    408KB

                  • memory/4088-136-0x0000000005940000-0x0000000005950000-memory.dmp

                    Filesize

                    64KB

                  • memory/4088-271-0x00000000063C0000-0x0000000006452000-memory.dmp

                    Filesize

                    584KB

                  • memory/4088-272-0x0000000007040000-0x00000000075E4000-memory.dmp

                    Filesize

                    5.6MB

                  • memory/4088-273-0x0000000005940000-0x0000000005950000-memory.dmp

                    Filesize

                    64KB

                  • memory/4088-277-0x00000000064B0000-0x00000000064BA000-memory.dmp

                    Filesize

                    40KB

                  • memory/4088-283-0x0000000005940000-0x0000000005950000-memory.dmp

                    Filesize

                    64KB