Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2023, 20:57

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) 9 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:1488
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3000
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:4776
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:4568
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:3392
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1676
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:2836
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:464

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\Local\240d2b2c514a3129f24f972d0a084522\msgid.dat

                    Filesize

                    1B

                    MD5

                    cfcd208495d565ef66e7dff9f98764da

                    SHA1

                    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

                    SHA256

                    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

                    SHA512

                    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

                  • C:\Users\Admin\AppData\Local\80719b25ddc5fae5fbfab33c4a5634ae\Admin@WEYPCEWN_en-US\Browsers\Firefox\Bookmarks.txt

                    Filesize

                    105B

                    MD5

                    2e9d094dda5cdc3ce6519f75943a4ff4

                    SHA1

                    5d989b4ac8b699781681fe75ed9ef98191a5096c

                    SHA256

                    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

                    SHA512

                    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

                  • C:\Users\Admin\AppData\Local\80719b25ddc5fae5fbfab33c4a5634ae\Admin@WEYPCEWN_en-US\System\Process.txt

                    Filesize

                    4KB

                    MD5

                    ff2f41383264ca73092f9caf0da2edac

                    SHA1

                    a696b0d8e9c36e3c20e5475fd91631a505283783

                    SHA256

                    ad99f33a5fc0641b797a7d3eed2c4fc567b46aab764e9f29a67a4c1590c7714e

                    SHA512

                    35a33b256c2fb9b27c46440478d5bea2ca5ecd2578b15a4195b7db2a6abf6a565436104fe66c4d753f8a6d51b17d604b8788c68fa180a71b8f76c68f7e4e8a78

                  • memory/1488-133-0x0000000000060000-0x0000000000092000-memory.dmp

                    Filesize

                    200KB

                  • memory/1488-134-0x0000000004A80000-0x0000000004A90000-memory.dmp

                    Filesize

                    64KB

                  • memory/1488-135-0x0000000004B90000-0x0000000004BF6000-memory.dmp

                    Filesize

                    408KB

                  • memory/1488-136-0x0000000004A80000-0x0000000004A90000-memory.dmp

                    Filesize

                    64KB

                  • memory/1488-276-0x00000000059C0000-0x0000000005A52000-memory.dmp

                    Filesize

                    584KB

                  • memory/1488-277-0x0000000006010000-0x00000000065B4000-memory.dmp

                    Filesize

                    5.6MB

                  • memory/1488-279-0x0000000004A80000-0x0000000004A90000-memory.dmp

                    Filesize

                    64KB

                  • memory/1488-282-0x00000000059A0000-0x00000000059AA000-memory.dmp

                    Filesize

                    40KB

                  • memory/1488-288-0x0000000004A80000-0x0000000004A90000-memory.dmp

                    Filesize

                    64KB