Analysis

  • max time kernel
    144s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-05-2024 18:24

General

  • Target

    Server.exe

  • Size

    175KB

  • MD5

    e801aa3cb811d606a50a76786e41b221

  • SHA1

    e79d850e46a3804972c0510dbccbcbe1b255b60f

  • SHA256

    a10b01aa48b1c95f730aac0d28ca7c2bc41e822b675fc6a2010fa17f8c00181b

  • SHA512

    368a3a73d07e5938aeeb3af6b66178289765a95b88633c519fefefbe6e1d229ad246b3ff092444ac94f5623e45a2462b703433e8f01ff60a102c09d6868e6d8c

  • SSDEEP

    3072:de8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gTTwARE+WpCc:B6ewwIwQJ6vKX0c5MlYZ0b28

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/bot7346820426:AAE3aepHX-AAQvBLMmoXhCoPgsUfSLO3SR4/sendMessage?chat_id=1979310363

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#.

  • StormKitty

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

  • StormKitty 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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 SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 55 IoCs
  • Suspicious use of SendNotifyMessage 55 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:964
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:2024
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:4224
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:1040
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1960
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:948
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:1424
            • C:\Windows\system32\taskmgr.exe
              "C:\Windows\system32\taskmgr.exe" /4
              1⤵
              • Checks SCSI registry key(s)
              • Modifies registry class
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              PID:4908
            • C:\Windows\System32\rundll32.exe
              C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
              1⤵
                PID:3472

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Local\4d47f4a59038745bad834b269611d67e\Admin@OBJIYUIE_en-US\Browsers\Firefox\Bookmarks.txt

                Filesize

                105B

                MD5

                2e9d094dda5cdc3ce6519f75943a4ff4

                SHA1

                5d989b4ac8b699781681fe75ed9ef98191a5096c

                SHA256

                c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

                SHA512

                d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

              • C:\Users\Admin\AppData\Local\4d47f4a59038745bad834b269611d67e\Admin@OBJIYUIE_en-US\System\Process.txt

                Filesize

                4KB

                MD5

                36529b20427248a2b64aea1087ff9c16

                SHA1

                3dcddb4028a870aa1faf661d023f54ae763b3069

                SHA256

                0ecfb7ba1084f1e60ba40e71402895c2f60d8ad0e804a61c910ae2d8377ceeae

                SHA512

                cecd669ac6d725bba2470de7f8ae636527c4f10e20334b348759acdd9f9f1d7cc0d8377dccbb7fd8b38910668f0d72a696702157ba0444f9390b7233df64af40

              • C:\Users\Admin\AppData\Local\4d47f4a59038745bad834b269611d67e\msgid.dat

                Filesize

                1B

                MD5

                cfcd208495d565ef66e7dff9f98764da

                SHA1

                b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

                SHA256

                5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

                SHA512

                31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

              • memory/3904-164-0x0000000006600000-0x0000000006612000-memory.dmp

                Filesize

                72KB

              • memory/3904-190-0x00000000750E0000-0x0000000075890000-memory.dmp

                Filesize

                7.7MB

              • memory/3904-2-0x00000000750E0000-0x0000000075890000-memory.dmp

                Filesize

                7.7MB

              • memory/3904-150-0x00000000750E0000-0x0000000075890000-memory.dmp

                Filesize

                7.7MB

              • memory/3904-152-0x0000000005720000-0x00000000057B2000-memory.dmp

                Filesize

                584KB

              • memory/3904-153-0x0000000005D70000-0x0000000006314000-memory.dmp

                Filesize

                5.6MB

              • memory/3904-157-0x0000000005940000-0x000000000594A000-memory.dmp

                Filesize

                40KB

              • memory/3904-158-0x00000000750EE000-0x00000000750EF000-memory.dmp

                Filesize

                4KB

              • memory/3904-1-0x0000000000300000-0x0000000000332000-memory.dmp

                Filesize

                200KB

              • memory/3904-0-0x00000000750EE000-0x00000000750EF000-memory.dmp

                Filesize

                4KB

              • memory/3904-187-0x00000000750E0000-0x0000000075890000-memory.dmp

                Filesize

                7.7MB

              • memory/3904-3-0x0000000004C10000-0x0000000004C76000-memory.dmp

                Filesize

                408KB

              • memory/4908-191-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-193-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-192-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-203-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-202-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-201-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-200-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-199-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-198-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB

              • memory/4908-197-0x000001B0E76A0000-0x000001B0E76A1000-memory.dmp

                Filesize

                4KB