Analysis

  • max time kernel
    147s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    13-08-2024 19:47

General

  • Target

    WinRAR 7.01 Pro.exe

  • Size

    4.3MB

  • MD5

    1c8908102946928867ab16f2007b35cc

  • SHA1

    7e08b98299e0195a013e53221e3c2efb149eb4ce

  • SHA256

    e3635b82438e536636955e2fee251073b1038a7e00295a1e0efb003ad49965d5

  • SHA512

    a559caedc7b00da23cb18607d0f2f05c6954a949dff0c8a4c25f6353163b70fd16722728878bb87c9db5cff86dc0252f967ebc26a66cb975af85f1361372a734

  • SSDEEP

    98304:DaxGFtNdBfKEgzVQYAO52weo3VudIlHSTNWA0rkjEaxKd:DRdytzAO52wLVu2oBWv7t

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/bot5912059723:AAEvmpZvnGHJALjBBXk_PBuStnzDRsTe4-M/sendMessage?chat_id=750182271

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
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • .NET Reactor proctector 35 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 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) 7 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.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WinRAR 7.01 Pro.exe
    "C:\Users\Admin\AppData\Local\Temp\WinRAR 7.01 Pro.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:332
    • C:\Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe
      "C:\Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe"
      2⤵
      • Executes dropped EXE
      • Modifies Internet Explorer settings
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:2064
    • C:\Users\Admin\AppData\Local\Temp\_microsoft_corporation.exe
      "C:\Users\Admin\AppData\Local\Temp\_microsoft_corporation.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        • Suspicious use of WriteProcessMemory
        PID:2916
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3256
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Wi-Fi Discovery
          PID:3312
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3328
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3392
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3428
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show networks mode=bssid
          4⤵
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:3444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\ca2ef174cbb16068d0fcd6d19b0ff1e3\msgid.dat

    Filesize

    1B

    MD5

    cfcd208495d565ef66e7dff9f98764da

    SHA1

    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

    SHA256

    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

    SHA512

    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

  • \Users\Admin\AppData\Local\Temp\_microsoft_corporation.exe

    Filesize

    487KB

    MD5

    b2795fbed63c8c1b0846b3eaeae2fe0f

    SHA1

    d1145cff21e008c9ad581ccf1719139d754355de

    SHA256

    5ea467d548d41b747370a235c9a245910ed58d55482a48246196faf391213c24

    SHA512

    47ffcc3c74113db4c389ba9a6b5db7ce325d1f63e431405a9f6613918c387de4a677f20804aad6aa458bf2151de418c2f72740f4f5083fb45bf6c4b0f564e564

  • \Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe

    Filesize

    3.8MB

    MD5

    5e2849bef6a38ed0b163ea6128afea01

    SHA1

    d77e1467dcd5e6662a6b97de35cb017579af032a

    SHA256

    6ec13e13059bac123d839fde5770db2c87248ef862d21f5f818580287a365026

    SHA512

    e20bcb346b114c5e6f8f0e82d2143a7c02ffc77056983336a011fbe8e292d8fa0ed8d2aebaa6f665ffacfa1063f59a2788bc68bbe2605316d7791eec3a1e1cfb

  • memory/332-0-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

    Filesize

    4KB

  • memory/332-1-0x0000000000A90000-0x0000000000EE2000-memory.dmp

    Filesize

    4.3MB

  • memory/2820-74-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-60-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-26-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-28-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-30-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-48-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-32-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-34-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-50-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-62-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-64-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-66-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-68-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-70-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-72-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-24-0x00000000047C0000-0x00000000048A2000-memory.dmp

    Filesize

    904KB

  • memory/2820-76-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-25-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-78-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-80-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-82-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-84-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-86-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-58-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-88-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-56-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-54-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-52-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-46-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-44-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-42-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-40-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-38-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-36-0x00000000047C0000-0x000000000489C000-memory.dmp

    Filesize

    880KB

  • memory/2820-2273-0x0000000001F80000-0x0000000001FB0000-memory.dmp

    Filesize

    192KB

  • memory/2820-23-0x00000000048A0000-0x0000000004984000-memory.dmp

    Filesize

    912KB