Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-08-2023 13:44

General

  • Target

    161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe

  • Size

    232KB

  • MD5

    2edd2a16ac037ec6ec19b7ec1de8d158

  • SHA1

    d9ba0bce953bf5f42962e61fd0eb17ac86d83643

  • SHA256

    161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63

  • SHA512

    a6eff00a9a7114aa230144e1de3d50ff19b7203e437bbabf61d86fb2758e0e7bc2a8d409cbf46dcafaf79ad993ffe6afaa6110433df5429be926b41ac9f5eb85

  • SSDEEP

    6144:HDubaBBOBIIj6HLLYLCYJqvc1DcCCB1ZHbu3Mi3//RBJpfq:SbaDCCdapp

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/bot5528293567:AAEvVqFZRYkeHFch3_kTGdMV2u4Swi0-pT8/sendMessage?chat_id=1787677484

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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe
    "C:\Users\Admin\AppData\Local\Temp\161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3924
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:2092
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:688
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:4832
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4616
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:3236
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:4836
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Admin\AppData\Local\Temp\161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe"
                2⤵
                • Creates scheduled task(s)
                PID:4908

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\917285dd49ea028f474fd9f7383ad889\Admin@YACSFKWT_en-US\Browsers\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\917285dd49ea028f474fd9f7383ad889\Admin@YACSFKWT_en-US\System\Process.txt

              Filesize

              4KB

              MD5

              9a237eb6afb31e775989d5a2f5ef63fa

              SHA1

              f5935186fdc15957d26a5f19ee4c58754b1e51b6

              SHA256

              0fcbbc13d3b6f6fe05932ac2a012ea5081a2892769e55c99bffea316828b2c22

              SHA512

              1f8b04942b10edae1793c6e5ed890e6714526d869b0a161c056e1353838de269a7cb5468ec7ce42f2e573bef7ffeb7ca347087a7c67ad9a2a7edaca762cee219

            • C:\Users\Admin\AppData\Local\c235d86070e63fa5410160bf85017956\msgid.dat

              Filesize

              6B

              MD5

              0cd9bd0c2aff58c347c9d512127d7e2c

              SHA1

              cf40cf73d318e1c3cdbac684ac5c696713e147ae

              SHA256

              4cf1a1c089ca12a669060c472f0b4e22b97d3c8887382c65badf527885e34752

              SHA512

              a166414ab94d8bfee56ef8c2b18f155698da374138b2394d660760b5e6461ba869daa7bc963f8ff6c98055bacdee2838fc8fee87ef97755290710f294b7d3e40

            • memory/3924-137-0x0000000005C30000-0x00000000061D4000-memory.dmp

              Filesize

              5.6MB

            • memory/3924-133-0x00000000743E0000-0x0000000074B90000-memory.dmp

              Filesize

              7.7MB

            • memory/3924-138-0x0000000005760000-0x00000000057F2000-memory.dmp

              Filesize

              584KB

            • memory/3924-227-0x00000000743E0000-0x0000000074B90000-memory.dmp

              Filesize

              7.7MB

            • memory/3924-235-0x0000000004D30000-0x0000000004D40000-memory.dmp

              Filesize

              64KB

            • memory/3924-136-0x0000000004D30000-0x0000000004D40000-memory.dmp

              Filesize

              64KB

            • memory/3924-284-0x0000000004D30000-0x0000000004D40000-memory.dmp

              Filesize

              64KB

            • memory/3924-289-0x00000000066E0000-0x00000000066EA000-memory.dmp

              Filesize

              40KB

            • memory/3924-135-0x0000000004BB0000-0x0000000004C16000-memory.dmp

              Filesize

              408KB

            • memory/3924-295-0x0000000006DD0000-0x0000000006DE2000-memory.dmp

              Filesize

              72KB

            • memory/3924-134-0x00000000001C0000-0x0000000000200000-memory.dmp

              Filesize

              256KB

            • memory/3924-319-0x0000000004D30000-0x0000000004D40000-memory.dmp

              Filesize

              64KB

            • memory/3924-321-0x0000000007980000-0x000000000798A000-memory.dmp

              Filesize

              40KB