Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    29/06/2023, 15:55

General

  • Target

    1006.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 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) 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\1006.exe
    "C:\Users\Admin\AppData\Local\Temp\1006.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:2012
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1660
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:880
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:1808
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:1776
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1772
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:1076
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:932

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

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

                    Filesize

                    344B

                    MD5

                    558033b82d82f251cc419095acfa059b

                    SHA1

                    51337aecc3bbc70c0a46bdd19fdc56050aa35e55

                    SHA256

                    eae442b6f3ae9121055453a6be57a1c51d2537ab40661075e9d3271608ba836f

                    SHA512

                    7c0b06b20a3820fda9dc57070bc144932ac294d3fce9c9db47d9d2a32a08032644e497d58d31c4e5607e09cff55609b7a65ca84455ceffa2e1cfda6e1fb2f3b4

                  • C:\Users\Admin\AppData\Local\38ce9a6580672064f369c7e1356645d1\Admin@MSOKFDFP_en-US\Browsers\Firefox\Bookmarks.txt

                    Filesize

                    105B

                    MD5

                    2e9d094dda5cdc3ce6519f75943a4ff4

                    SHA1

                    5d989b4ac8b699781681fe75ed9ef98191a5096c

                    SHA256

                    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

                    SHA512

                    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

                  • C:\Users\Admin\AppData\Local\Temp\Cab86E6.tmp

                    Filesize

                    62KB

                    MD5

                    3ac860860707baaf32469fa7cc7c0192

                    SHA1

                    c33c2acdaba0e6fa41fd2f00f186804722477639

                    SHA256

                    d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

                    SHA512

                    d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

                  • C:\Users\Admin\AppData\Local\Temp\Tar87F2.tmp

                    Filesize

                    164KB

                    MD5

                    4ff65ad929cd9a367680e0e5b1c08166

                    SHA1

                    c0af0d4396bd1f15c45f39d3b849ba444233b3a2

                    SHA256

                    c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

                    SHA512

                    f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

                  • C:\Users\Admin\AppData\Local\f0c985ccc15b2470928902db2561f77c\msgid.dat

                    Filesize

                    1B

                    MD5

                    cfcd208495d565ef66e7dff9f98764da

                    SHA1

                    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

                    SHA256

                    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

                    SHA512

                    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

                  • memory/2012-54-0x0000000000250000-0x0000000000280000-memory.dmp

                    Filesize

                    192KB

                  • memory/2012-55-0x0000000000470000-0x00000000004B0000-memory.dmp

                    Filesize

                    256KB

                  • memory/2012-124-0x0000000000470000-0x00000000004B0000-memory.dmp

                    Filesize

                    256KB

                  • memory/2012-127-0x0000000000470000-0x00000000004B0000-memory.dmp

                    Filesize

                    256KB

                  • memory/2012-194-0x0000000000470000-0x00000000004B0000-memory.dmp

                    Filesize

                    256KB