Analysis

  • max time kernel
    147s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-08-2023 14:38

General

  • Target

    0x0009000000012023-62.exe

  • Size

    170KB

  • MD5

    958062458cd994df325348bb9f8f9d11

  • SHA1

    6d678d971f4239f9304a3a6ac9941b9d7de1ba27

  • SHA256

    109f96c67f55689c41320f832134501ec02389a813eba1d990d192ab378ad533

  • SHA512

    e73c665f0cd3cc53ea4ca0ef50d196fce4783488759bd9f6b8d9cb842382e88327509a317dd328ddf7b7fc988cde06a46cd82fe2783165f75d5f812e231affff

  • SSDEEP

    3072:O+STW8djpN6izj8mZwUFUA+16/qIPu/i9b6J2cST6+WpL:z8XN6W8mm7NiXPSi9bSY

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/bot6085983475:AAG9ma6AdbwS2Vmvqb_xIeiP1vbivSAPlXU/sendMessage?chat_id=1829819531

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) 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.

  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0x0009000000012023-62.exe
    "C:\Users\Admin\AppData\Local\Temp\0x0009000000012023-62.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3820
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1128
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:4640
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:3904
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:4668
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:752
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:2236
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:3436

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\57abb44abb34c4a9c2b78c7bd5e8aecf\msgid.dat

              Filesize

              2B

              MD5

              f4b9ec30ad9f68f89b29639786cb62ef

              SHA1

              215bb47da8fac3342b858ac3db09b033c6c46e0b

              SHA256

              e3d6c4d4599e00882384ca981ee287ed961fa5f3828e2adb5e9ea890ab0d0525

              SHA512

              85eb108b7e36af2b00ba3e0bc2e2ece782fbf86ef4946df5f91b8ddd978a559f4a6e4f8896b4dc7deb1ba22703ffc5dcefb650c54c60bc8d98b2411a5c2191f1

            • C:\Users\Admin\AppData\Local\c08b365509d8e4d30c8f11f1405d5d45\Admin@KHQJMFWR_en-US\Browsers\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\c08b365509d8e4d30c8f11f1405d5d45\Admin@KHQJMFWR_en-US\System\Process.txt

              Filesize

              4KB

              MD5

              51ae148ac94cc61f2ad6f6edb6f6a67c

              SHA1

              681dbfee6834cbd7cc33612bcc068033dd41c9d1

              SHA256

              ba86429a52e81d4b170160e5a81fa64af4c186f3e136f714728503fc16d323eb

              SHA512

              21e6b24fbf21e32da1f2089997f4cbc7f564494ad5ad75b99ace7cf73f90fd7ba3552d0fb50d519510633ef9718e4f43c028cc1bc4f07fc99a9af1f6f2019603

            • memory/3820-211-0x0000000004B10000-0x0000000004B20000-memory.dmp

              Filesize

              64KB

            • memory/3820-136-0x0000000004D90000-0x0000000004DF6000-memory.dmp

              Filesize

              408KB

            • memory/3820-200-0x0000000074890000-0x0000000075040000-memory.dmp

              Filesize

              7.7MB

            • memory/3820-133-0x00000000000B0000-0x00000000000E0000-memory.dmp

              Filesize

              192KB

            • memory/3820-135-0x0000000004B10000-0x0000000004B20000-memory.dmp

              Filesize

              64KB

            • memory/3820-282-0x0000000004B10000-0x0000000004B20000-memory.dmp

              Filesize

              64KB

            • memory/3820-284-0x00000000059B0000-0x0000000005A42000-memory.dmp

              Filesize

              584KB

            • memory/3820-285-0x0000000006000000-0x00000000065A4000-memory.dmp

              Filesize

              5.6MB

            • memory/3820-289-0x0000000005AD0000-0x0000000005ADA000-memory.dmp

              Filesize

              40KB

            • memory/3820-134-0x0000000074890000-0x0000000075040000-memory.dmp

              Filesize

              7.7MB

            • memory/3820-295-0x0000000005AE0000-0x0000000005AF2000-memory.dmp

              Filesize

              72KB

            • memory/3820-320-0x0000000004B10000-0x0000000004B20000-memory.dmp

              Filesize

              64KB