Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-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 2 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) 5 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.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 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)
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1488
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:2680
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:1620
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:2960
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2772
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:2888
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:3020

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              344B

              MD5

              c07c23e3c9dd194f296c37a9187f4c2f

              SHA1

              5bc7fc69343f2e660f5ed99b7c029bd67bd7a0ab

              SHA256

              11fa863fe472ada2dfd59dec354ad3e0a3d14b8057fd5a9445b1d8bb06dc605b

              SHA512

              917e71971c40f269ffab2e43ee30c525c5120b873ab0cd5c6df5f17b7b2d8ee3b56f1b9ee4a72f984b5f6e92726c859a798733f4cc34e1f2ab83a9ca81e017ec

            • C:\Users\Admin\AppData\Local\Temp\CabC404.tmp

              Filesize

              62KB

              MD5

              3ac860860707baaf32469fa7cc7c0192

              SHA1

              c33c2acdaba0e6fa41fd2f00f186804722477639

              SHA256

              d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

              SHA512

              d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

            • C:\Users\Admin\AppData\Local\Temp\TarC54E.tmp

              Filesize

              164KB

              MD5

              4ff65ad929cd9a367680e0e5b1c08166

              SHA1

              c0af0d4396bd1f15c45f39d3b849ba444233b3a2

              SHA256

              c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

              SHA512

              f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

            • C:\Users\Admin\AppData\Local\af32981756880d4544628b1e6abe48e5\msgid.dat

              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • memory/1952-53-0x0000000000110000-0x0000000000140000-memory.dmp

              Filesize

              192KB

            • memory/1952-54-0x0000000074380000-0x0000000074A6E000-memory.dmp

              Filesize

              6.9MB

            • memory/1952-55-0x0000000000600000-0x0000000000640000-memory.dmp

              Filesize

              256KB

            • memory/1952-122-0x0000000074380000-0x0000000074A6E000-memory.dmp

              Filesize

              6.9MB

            • memory/1952-123-0x0000000000600000-0x0000000000640000-memory.dmp

              Filesize

              256KB

            • memory/1952-154-0x0000000000600000-0x0000000000640000-memory.dmp

              Filesize

              256KB