Resubmissions

23-08-2024 12:00

240823-n6fc3aseme 10

21-08-2024 11:53

240821-n2b5vazhmk 10

Analysis

  • max time kernel
    106s
  • max time network
    143s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-08-2024 11:53

General

  • Target

    14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe

  • Size

    331KB

  • MD5

    3a0a8189bb8910131bd13c098a1de18b

  • SHA1

    600ff8878e9782ff7d3df847b379eca20d3e3bdd

  • SHA256

    14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5

  • SHA512

    7c55c20d70f08b0c57390fc1decf1d26573c7e04738f1187e2ab3b8ecb0e3aebc06072f88724735828e114cad6592346c0c6b3a8db90c0b5765571fd5beefb6f

  • SSDEEP

    6144:o2x6R9b8D6InoSbfVmEtpMMlRMH9O1BNI:o46R9b87noWYapMMlRMo7I

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

45.66.231.150:3232

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Stealerium

    An open source info stealer written in C# first seen in May 2022.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs
  • Async RAT payload 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 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.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3400
      • C:\Users\Admin\AppData\Local\Temp\14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe
        "C:\Users\Admin\AppData\Local\Temp\14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of WriteProcessMemory
        PID:4000
      • C:\Windows\System32\notepad.exe
        C:\Windows\System32\notepad.exe
        2⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2444
        • C:\Windows\System32\cmd.exe
          "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
          3⤵
          • System Network Configuration Discovery: Wi-Fi Discovery
          PID:4328
          • C:\Windows\System32\chcp.com
            chcp 65001
            4⤵
              PID:2432
            • C:\Windows\System32\netsh.exe
              netsh wlan show profile
              4⤵
              • Event Triggered Execution: Netsh Helper DLL
              • System Network Configuration Discovery: Wi-Fi Discovery
              PID:4164
            • C:\Windows\System32\findstr.exe
              findstr All
              4⤵
                PID:3876
            • C:\Windows\System32\cmd.exe
              "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
              3⤵
                PID:2756
                • C:\Windows\System32\chcp.com
                  chcp 65001
                  4⤵
                    PID:4568
                  • C:\Windows\System32\netsh.exe
                    netsh wlan show networks mode=bssid
                    4⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:2280

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\951228ed163af9199d1b43d6dd2b1db6\Admin@LBPSYPUR_en-US\Browsers\Mozilla\Firefox\Bookmarks.txt

              Filesize

              105B

              MD5

              2e9d094dda5cdc3ce6519f75943a4ff4

              SHA1

              5d989b4ac8b699781681fe75ed9ef98191a5096c

              SHA256

              c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

              SHA512

              d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

            • C:\Users\Admin\AppData\Local\951228ed163af9199d1b43d6dd2b1db6\Admin@LBPSYPUR_en-US\System\Process.txt

              Filesize

              2KB

              MD5

              3c6faf3d44dda846b73a266ecdac43d1

              SHA1

              ed554ca3e5ac382e8da57ae7e7dbab817673e53c

              SHA256

              a3edcd153e71fbd34c16b7b08238e1244043d76b0713aa05275ccaff698091e4

              SHA512

              e96284ade68e88473ce0a933bf639c977f6fb272c33ddba741500587160af7b6ce051a061f73133abcf19e013c7b097efe299df8e99c5a32c3ff073a6f668f4a

            • C:\Users\Admin\AppData\Local\951228ed163af9199d1b43d6dd2b1db6\Admin@LBPSYPUR_en-US\System\Process.txt

              Filesize

              3KB

              MD5

              387c921e9c76d8ad5b50e42a2eeb7904

              SHA1

              9ce476f14571c785100a2fd1a2ea6038578b2d21

              SHA256

              bb235a4614da9dac1d39a8c950cbb466f5486c5fc1673d80bc3f2888f715c725

              SHA512

              6d93a2bef8df5107e728dd9d5444717ebc30c912b9c573a58ea1272ce94916fe8d94233124182c463230bb93c7aebfad03964f8772fc4ebe1deecaab78f43c78

            • C:\Users\Admin\AppData\Local\951228ed163af9199d1b43d6dd2b1db6\Admin@LBPSYPUR_en-US\System\Process.txt

              Filesize

              4KB

              MD5

              38ee9da8f8e619dc657e9c715fdbc3ab

              SHA1

              cb4084138bb2b83af4cb932084275617b806e966

              SHA256

              b4a85ee2641295daba373bf8b8c29a6e6c6671c2f8e2158e27fffb34f2c7c8b6

              SHA512

              adc6c53f770f19ffa6f38fba5b7cac319661540f4da1d962cd1408c37e1abac166465f27ad1ecf0a241f8b6fd0d6745cd4f03cb1d6d451469302b1d9bbad3a5b

            • C:\Users\Admin\AppData\Local\951228ed163af9199d1b43d6dd2b1db6\Admin@LBPSYPUR_en-US\System\Process.txt

              Filesize

              802B

              MD5

              bb36043154d8df894661dd153f93f60a

              SHA1

              4485272e76eee0e112070ad08cc58cb70754e87d

              SHA256

              d769751b8dc0bc786cb7f7026f352643966bfa4b9cbc534c5248e63c0dea9c3d

              SHA512

              dead1b2cadc9c6ad700c4cd549bcc3376a96ad1d2913c2e3cf5b7790be56c4e8ff5e9a44231e5ed247d2ae9c5bf5e0c407f703add877e8d6b9a5fb3491305839

            • memory/2444-7-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-4-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-10-0x0000019E18370000-0x0000019E184F8000-memory.dmp

              Filesize

              1.5MB

            • memory/2444-9-0x0000019E7FF90000-0x0000019E80006000-memory.dmp

              Filesize

              472KB

            • memory/2444-11-0x0000019E7F740000-0x0000019E7F75E000-memory.dmp

              Filesize

              120KB

            • memory/2444-16-0x0000019E18500000-0x0000019E1850A000-memory.dmp

              Filesize

              40KB

            • memory/2444-17-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-19-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-0-0x0000019E7D9C0000-0x0000019E7D9D6000-memory.dmp

              Filesize

              88KB

            • memory/2444-8-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-3-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-2-0x0000019E7F570000-0x0000019E7F586000-memory.dmp

              Filesize

              88KB

            • memory/2444-1-0x00007FFED0CB3000-0x00007FFED0CB5000-memory.dmp

              Filesize

              8KB

            • memory/2444-154-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-155-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB

            • memory/2444-165-0x0000019E18AA0000-0x0000019E18B1A000-memory.dmp

              Filesize

              488KB

            • memory/2444-197-0x00007FFED0CB0000-0x00007FFED1772000-memory.dmp

              Filesize

              10.8MB