Analysis

  • max time kernel
    60s
  • max time network
    54s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    13-08-2024 19:43

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 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.

  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 26 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2632
    • C:\Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe
      "C:\Users\Admin\AppData\Local\Temp\winrar_x64_701ar.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2820
    • 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:3564
      • 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:3028
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3440
        • 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:3192
        • C:\Windows\SysWOW64\findstr.exe
          findstr All
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2560
      • 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:2524
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4556
        • 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:3380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\5e02335600795c46d261a189ea9ab23c\Admin@ZFKGDPGJ_en-US\Browsers\Firefox\Bookmarks.txt

    Filesize

    105B

    MD5

    2e9d094dda5cdc3ce6519f75943a4ff4

    SHA1

    5d989b4ac8b699781681fe75ed9ef98191a5096c

    SHA256

    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

    SHA512

    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

  • C:\Users\Admin\AppData\Local\5e02335600795c46d261a189ea9ab23c\Admin@ZFKGDPGJ_en-US\System\Process.txt

    Filesize

    4KB

    MD5

    fb799ff6614adfd9b3c099e2870607a7

    SHA1

    9242facff8dd935824b34d8667e363c9ed1d7336

    SHA256

    3b32db1cdd86c116bbe6c1fa850b978f911f37502a9ed690e5647cc001b963e1

    SHA512

    37348f23065c94ac04320047c3b00aebffa9ee492de4fdb27c16695d37a50288e82c2b1ee622cf5978a287577359c3b459764addabb4fccd9dbf05ebca59bf43

  • C:\Users\Admin\AppData\Local\847b19771ec05254524dbacfa3aba31c\msgid.dat

    Filesize

    6B

    MD5

    23a4f338ff0ec4559eef3dadbc87fa94

    SHA1

    7e0c6a093793927f58670c8cdbed0e77e006106b

    SHA256

    48ebaa79c7017ac4d7de5f8346c5e0ed154b13d6bb7474a4255eb7cc4068c3fc

    SHA512

    c63dae27a467a84d891e29d2ac43f71cc128b0e52f737b0ef22565710d70af1dc3e7b7a9672ca6a239bf4fcb858ba6da2746677d6bf439c1b6ca7b13daac538d

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

    Filesize

    487KB

    MD5

    b2795fbed63c8c1b0846b3eaeae2fe0f

    SHA1

    d1145cff21e008c9ad581ccf1719139d754355de

    SHA256

    5ea467d548d41b747370a235c9a245910ed58d55482a48246196faf391213c24

    SHA512

    47ffcc3c74113db4c389ba9a6b5db7ce325d1f63e431405a9f6613918c387de4a677f20804aad6aa458bf2151de418c2f72740f4f5083fb45bf6c4b0f564e564

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

    Filesize

    3.8MB

    MD5

    5e2849bef6a38ed0b163ea6128afea01

    SHA1

    d77e1467dcd5e6662a6b97de35cb017579af032a

    SHA256

    6ec13e13059bac123d839fde5770db2c87248ef862d21f5f818580287a365026

    SHA512

    e20bcb346b114c5e6f8f0e82d2143a7c02ffc77056983336a011fbe8e292d8fa0ed8d2aebaa6f665ffacfa1063f59a2788bc68bbe2605316d7791eec3a1e1cfb

  • memory/2632-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

    Filesize

    4KB

  • memory/2632-1-0x00000000001E0000-0x0000000000632000-memory.dmp

    Filesize

    4.3MB

  • memory/2632-2-0x0000000005120000-0x00000000051BC000-memory.dmp

    Filesize

    624KB

  • memory/3564-63-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-55-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-91-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-93-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-89-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-87-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-85-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-83-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-81-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-79-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-77-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-75-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-73-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-71-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-69-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-67-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-35-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-65-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-61-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-59-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-57-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-39-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-53-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-51-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-49-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-47-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-45-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-43-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-37-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-33-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-31-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-41-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-30-0x0000000004CB0000-0x0000000004D8C000-memory.dmp

    Filesize

    880KB

  • memory/3564-2278-0x0000000002670000-0x00000000026A0000-memory.dmp

    Filesize

    192KB

  • memory/3564-2279-0x00000000057F0000-0x0000000005856000-memory.dmp

    Filesize

    408KB

  • memory/3564-29-0x0000000004CB0000-0x0000000004D92000-memory.dmp

    Filesize

    904KB

  • memory/3564-2419-0x0000000006470000-0x0000000006502000-memory.dmp

    Filesize

    584KB

  • memory/3564-2423-0x00000000065A0000-0x00000000065AA000-memory.dmp

    Filesize

    40KB

  • memory/3564-28-0x0000000004E90000-0x0000000005436000-memory.dmp

    Filesize

    5.6MB

  • memory/3564-2429-0x0000000006EE0000-0x0000000006EF2000-memory.dmp

    Filesize

    72KB

  • memory/3564-27-0x0000000004DB0000-0x0000000004E94000-memory.dmp

    Filesize

    912KB