Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    30/06/2023, 11:55

General

  • Target

    62b6260c98e5afe1c20f7dfb0.exe

  • Size

    225KB

  • MD5

    62b6260c98e5afe1c20f7dfb031c6cbc

  • SHA1

    cea0e62f31a0ab68ceb8fff68d36e8c09e8a9c83

  • SHA256

    3163cce36440d2b1cbc265a56298664026d1ddf3885ca0962367028c88d07113

  • SHA512

    a634c04fad375dcce6ae88b7a97a99fe5fec2dd10763b1fe4e9330ab2c57c0c17c5102c74f9077e8b346b770cfd98df677f797e49a0fecd882795b014b2a57e5

  • SSDEEP

    3072:j+STW8djpN6izj8mZwlsdZ5b4GaBfVaDUbBKfDqRY6RAYnecDQ+g3H1vKx6+Wpw:A8XN6W8mmlKgfMDUbofDq+YnJ

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/bot6154715708:AAGKCDwosu3IuPM9RPnUhnOetL8Sftgqoy0/sendMessage?chat_id=1165040754

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
  • Async RAT payload 2 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.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\62b6260c98e5afe1c20f7dfb0.exe
    "C:\Users\Admin\AppData\Local\Temp\62b6260c98e5afe1c20f7dfb0.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:908
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:996
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:1632
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:1956
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1608
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:1288
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:568

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                    Filesize

                    344B

                    MD5

                    56274aad885fd94b2b90a2c1392c7cfb

                    SHA1

                    41ed08adce5e133ce0b793cc94e016f4e7884235

                    SHA256

                    053191e0c340e6fbf21e787a41ded22310bc4e293034b86ed9af70e423648d2d

                    SHA512

                    60d69a3b213b3c69d42d45092585113a5e6d4ea14579f4f3ce05adffe47498b937e68a2cddbc04ff6657664445018ab94d571475be521e7f0ed4f1035d147b1f

                  • C:\Users\Admin\AppData\Local\Temp\Cab78D2.tmp

                    Filesize

                    62KB

                    MD5

                    3ac860860707baaf32469fa7cc7c0192

                    SHA1

                    c33c2acdaba0e6fa41fd2f00f186804722477639

                    SHA256

                    d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

                    SHA512

                    d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

                  • C:\Users\Admin\AppData\Local\Temp\Tar79AF.tmp

                    Filesize

                    164KB

                    MD5

                    4ff65ad929cd9a367680e0e5b1c08166

                    SHA1

                    c0af0d4396bd1f15c45f39d3b849ba444233b3a2

                    SHA256

                    c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

                    SHA512

                    f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

                  • C:\Users\Admin\AppData\Local\af602c8c4bda14f5ce75943b1c08674d\msgid.dat

                    Filesize

                    1B

                    MD5

                    cfcd208495d565ef66e7dff9f98764da

                    SHA1

                    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

                    SHA256

                    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

                    SHA512

                    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

                  • memory/2000-54-0x0000000000DA0000-0x0000000000DDE000-memory.dmp

                    Filesize

                    248KB

                  • memory/2000-55-0x0000000004500000-0x0000000004540000-memory.dmp

                    Filesize

                    256KB

                  • memory/2000-124-0x0000000004500000-0x0000000004540000-memory.dmp

                    Filesize

                    256KB

                  • memory/2000-127-0x0000000004500000-0x0000000004540000-memory.dmp

                    Filesize

                    256KB

                  • memory/2000-181-0x0000000004500000-0x0000000004540000-memory.dmp

                    Filesize

                    256KB