Resubmissions

17-08-2023 07:47

230817-jmp1yahh9t 10

29-06-2023 16:04

230629-th18hsea68 10

Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-06-2023 16:04

General

  • Target

    1006exe.exe

  • Size

    170KB

  • MD5

    b73d3fc85dc0c30abd6b42264b63152d

  • SHA1

    badb14d34d6d685bab54ceb55ef9b2c9b095e7cb

  • SHA256

    2e6a4680aa9b24612ca07e1492964a84e2fc9bdf5086e1311f05d8e3d034b65e

  • SHA512

    8acb78e24d339b460ba0abf98b2c21ae324d25a849f2eb73a4a3071c1a653d7d0ff2844a78a7b14b2fd1c33417d6b8540be18f2a9a1a647ad1669e1dae010995

  • SSDEEP

    3072:S+STW8djpN6izj8mZw9900qX2lD9PvWqHPu/i9bxJ2cjEGp6+WpP:P8XN6W8mm997lDhOGPSi9bfa

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:AAEr8vPeSHcSYTb0A4o52iLBY8gZOLx4sOQ/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 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\1006exe.exe
    "C:\Users\Admin\AppData\Local\Temp\1006exe.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2928
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:3560
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:4452
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:4528
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3812
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:4512
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:4644

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\463ac99d4448eaae2ef51eb3f5abbdeb\msgid.dat

              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • C:\Users\Admin\AppData\Local\761040ad9f6afe3c3c95535a33799e6e\Admin@NMFRSYJN_en-US\Browsers\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\761040ad9f6afe3c3c95535a33799e6e\Admin@NMFRSYJN_en-US\System\Process.txt

              Filesize

              4KB

              MD5

              09b00e59dc4d63a252b89465a4c670a0

              SHA1

              fc3ed8745a5e223ee59e55c96bf31f25f43f90a9

              SHA256

              46d23e74607f7bac651f5d25762f965c23ca55c6242a583090aba90506580bec

              SHA512

              54b95f9b08c3a6b795674d0da810e5e8c045ae70cedc95150e57dfc172c04c3c8b8b42af0fdf58045cba48f866762c682e9d625f06cfa6d8ed914d61888cda83

            • memory/4344-133-0x0000000000C50000-0x0000000000C80000-memory.dmp

              Filesize

              192KB

            • memory/4344-134-0x0000000005610000-0x0000000005620000-memory.dmp

              Filesize

              64KB

            • memory/4344-135-0x0000000005720000-0x0000000005786000-memory.dmp

              Filesize

              408KB

            • memory/4344-216-0x0000000005610000-0x0000000005620000-memory.dmp

              Filesize

              64KB

            • memory/4344-275-0x0000000006540000-0x00000000065D2000-memory.dmp

              Filesize

              584KB

            • memory/4344-276-0x0000000006B90000-0x0000000007134000-memory.dmp

              Filesize

              5.6MB

            • memory/4344-278-0x0000000005610000-0x0000000005620000-memory.dmp

              Filesize

              64KB

            • memory/4344-281-0x0000000006660000-0x000000000666A000-memory.dmp

              Filesize

              40KB

            • memory/4344-287-0x0000000005610000-0x0000000005620000-memory.dmp

              Filesize

              64KB