Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-12-2024 14:54

General

  • Target

    PryntVirus.exe

  • Size

    232KB

  • MD5

    ea10b6fdbb466c9e2bc1602efa14e4be

  • SHA1

    f9144cda448d4cf8ff47ac9cdb56ed262c5f9de3

  • SHA256

    e574a3494f4b760d028ccb7c8c73d6997aa7fd422104fa9b56c9ab3ddb695b2b

  • SHA512

    81e076141d108f914008b29e2f7b350e832c1e1edb44d778a8150b8011c78452d29c1c563faf3da201cc8a91e61ac2b5bad7298be3ba36659a24298df4149fe9

  • SSDEEP

    6144:jDubaBBOBIIj6HLLYLCYJqvc1DfNu4i8wb/SHbt5BasO5oUpNKEzoh:mbaYgh8wb6DY7XpQ

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/bot8038687818:AAF7yfWLNIj0GslX51tOIFXZ_75cuFnZ9oc/sendMessage?chat_id=6378570062

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#.

  • Asyncrat family
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Stormkitty family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 8 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.

  • Scheduled Task/Job: Scheduled Task 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\PryntVirus.exe
    "C:\Users\Admin\AppData\Local\Temp\PryntVirus.exe"
    1⤵
    • Checks computer location settings
    • 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:2668
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Wi-Fi Discovery
      • Suspicious use of WriteProcessMemory
      PID:3904
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:812
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show profile
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        PID:1936
      • C:\Windows\SysWOW64\findstr.exe
        findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3696
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3216
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3068
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show networks mode=bssid
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2268
    • 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\PryntVirus.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\85d567cc101f1614b9f6f61cf73f747c\Admin@GUMLNLFE_en-US\System\Process.txt

    Filesize

    4KB

    MD5

    47b5a5893528b11c8a2713658d2bc8a9

    SHA1

    96dfd566b983d991119661b1979519289de8f211

    SHA256

    60dfff81bccb55b2d7899d78174c0b19083b18f885971776cd60ac66cc2cc4c7

    SHA512

    8217105eff91ac78c27e27655ddb5e1b41c65272f542d1c73d4e04761e3e0f7de7ad5c084545ef604818ccb65a659296b8e2aeb6df33957e02a93fe2db0f6ecd

  • C:\Users\Admin\AppData\Local\d1defe483b07bf8b05fc9fb7afc11d31\msgid.dat

    Filesize

    4B

    MD5

    70d31b87bd021441e5e6bf23eb84a306

    SHA1

    47af2040bb2012893930fef26cd9f64525453d04

    SHA256

    e991d703329d35bbb1c393db607226e1af7749cc77d3f3e50b15c9b684157e0f

    SHA512

    afe2bbef00a5360fd1b9d165570d31ac9724d06e1aa2c1d0c0e00a7d587df0fe2e38879fcd3477988daf1ac4f66030616f9d0a51c556136d1c7b5072f1e60bec

  • memory/2668-3-0x0000000074780000-0x0000000074F30000-memory.dmp

    Filesize

    7.7MB

  • memory/2668-0-0x000000007478E000-0x000000007478F000-memory.dmp

    Filesize

    4KB

  • memory/2668-4-0x0000000005B30000-0x00000000060D4000-memory.dmp

    Filesize

    5.6MB

  • memory/2668-5-0x0000000005760000-0x00000000057F2000-memory.dmp

    Filesize

    584KB

  • memory/2668-2-0x0000000004DE0000-0x0000000004E46000-memory.dmp

    Filesize

    408KB

  • memory/2668-146-0x0000000074780000-0x0000000074F30000-memory.dmp

    Filesize

    7.7MB

  • memory/2668-151-0x0000000005B00000-0x0000000005B0A000-memory.dmp

    Filesize

    40KB

  • memory/2668-152-0x000000007478E000-0x000000007478F000-memory.dmp

    Filesize

    4KB

  • memory/2668-153-0x0000000074780000-0x0000000074F30000-memory.dmp

    Filesize

    7.7MB

  • memory/2668-1-0x00000000003D0000-0x0000000000410000-memory.dmp

    Filesize

    256KB

  • memory/2668-159-0x0000000006BE0000-0x0000000006BF2000-memory.dmp

    Filesize

    72KB

  • memory/2668-184-0x0000000074780000-0x0000000074F30000-memory.dmp

    Filesize

    7.7MB

  • memory/2668-185-0x0000000007790000-0x000000000779A000-memory.dmp

    Filesize

    40KB