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Analysis

  • max time kernel
    143s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    30/06/2023, 11:57

General

  • Target

    1006.exe

  • Size

    225KB

  • MD5

    883784a3500e2389e6e1816696dba87b

  • SHA1

    f4364ff100c016d5cf78a3a4e3bedb287555f2ce

  • SHA256

    0373eb783358fbf3b810fe1156efffd5847913c62db0e6c690e802300a5640ab

  • SHA512

    f5d4d508dfeee159d339b9833d8128a6486b866639cd5dcba381b873188c3a6e643961477e723e38d100c3a5b47b0c83499e18504b1a6e5f5e68a73bf01e73f3

  • SSDEEP

    3072:/+STW8djpN6izj8mZwgWDZ5IRN9MBQVahUbBEgDzazaLEV55NlmwXcFOC+UX6+WO:08XN6W8mmgqQMhUbOKEV55NlXkOI

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:AAHDKp_4g6Ye1lnxUlsJvFSuNl2Zm6A__-E/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) 6 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:1324
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1692
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:1572
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:1260
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:924
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1696
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:1728
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:1504

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              344B

              MD5

              7d2b9c3b49e66ed5a2f530cc1218b75d

              SHA1

              2d5d4a276ac3ddf6356c1bcd6d3641e24051463e

              SHA256

              b451e623f541f26b1bd751f5453acccba7e1c88dacf7f2a2dded22739e159520

              SHA512

              f745acd082683fcd22e0b025404668e52a44da8682dcdba24f286240b00d3c3e24aeba82a2947421b6125faf058efcd4c3f4933451e21547142445575ad0ce83

            • C:\Users\Admin\AppData\Local\33f8f133057b975106114edc6e5536fe\Admin@FQMLBKKW_en-US\Browsers\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\42d98991a246b29817e1363a1b8c2000\msgid.dat

              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • C:\Users\Admin\AppData\Local\Temp\Cab7EBB.tmp

              Filesize

              62KB

              MD5

              3ac860860707baaf32469fa7cc7c0192

              SHA1

              c33c2acdaba0e6fa41fd2f00f186804722477639

              SHA256

              d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

              SHA512

              d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

            • C:\Users\Admin\AppData\Local\Temp\Tar810F.tmp

              Filesize

              164KB

              MD5

              4ff65ad929cd9a367680e0e5b1c08166

              SHA1

              c0af0d4396bd1f15c45f39d3b849ba444233b3a2

              SHA256

              c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

              SHA512

              f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

            • memory/1324-54-0x00000000012A0000-0x00000000012DE000-memory.dmp

              Filesize

              248KB

            • memory/1324-55-0x0000000001250000-0x0000000001290000-memory.dmp

              Filesize

              256KB

            • memory/1324-123-0x0000000001250000-0x0000000001290000-memory.dmp

              Filesize

              256KB

            • memory/1324-127-0x0000000001250000-0x0000000001290000-memory.dmp

              Filesize

              256KB

            • memory/1324-128-0x0000000001250000-0x0000000001290000-memory.dmp

              Filesize

              256KB