Overview

overview

10

Static

static

10

def85febed...0e.exe

windows7-x64

10

def85febed...0e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    133s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-07-2024 02:02

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General

  • Target

    def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe

  • Size

    74KB

  • MD5

    d8f74bec52438dae8cc3155600cf325a

  • SHA1

    e637ac5ad63b81c694eb5ef01ec5d05ef1be1b55

  • SHA256

    def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e

  • SHA512

    5beaf90dd1cd9798aa17b9b0eb290ba222212e3d242a185b4277013affced8c7ace966e99ed675d4a4a0d21bb72e03dc6d9439eabfd1eed4e0d56a467047ac9d

  • SSDEEP

    1536:uUoe0cxFVTuCGbPMVOe9VdQuDI6H1bf/TLtJuQzc+LVclN:uUo3cxFVaBbPMVOe9VdQsH1bfrLSQXBY

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

45.132.107.72:4449

45.132.107.72:8090
Mutex

xixnfmyfcst

Attributes
  • delay

    1

  • install

    true

  • install_file

    chrome.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe
    "C:\Users\Admin\AppData\Local\Temp\def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3688
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"C:\Users\Admin\AppData\Local\Temp\chrome.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"C:\Users\Admin\AppData\Local\Temp\chrome.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4660
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAFB8.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3544
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:428
      • C:\Users\Admin\AppData\Local\Temp\chrome.exe
        "C:\Users\Admin\AppData\Local\Temp\chrome.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4228

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\chrome.exe
    Filesize

    74KB

    MD5

    d8f74bec52438dae8cc3155600cf325a

    SHA1

    e637ac5ad63b81c694eb5ef01ec5d05ef1be1b55

    SHA256

    def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e

    SHA512

    5beaf90dd1cd9798aa17b9b0eb290ba222212e3d242a185b4277013affced8c7ace966e99ed675d4a4a0d21bb72e03dc6d9439eabfd1eed4e0d56a467047ac9d

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\tmpAFB8.tmp.bat
    Filesize

    153B

    MD5

    35bdd8bda645fee6607e395b5a4de2ba

    SHA1

    33cbbce18120161caffed781b8f505df2ed12fe9

    SHA256

    4ba0ed8edb1539b63aa974f84c2b85cefe8ff4614d5cb85cf113109321807caa

    SHA512

    c0b42a09773db72b97e133cc22dc3e36754552fe5e4f7a094e6a5c40b9bbd4d3c7ed3bf8b11086b35af255e96b888d57b97916225e5172b8f07e9326aca0e628

    Download Submit

  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

    Download Submit

  • memory/3688-0-0x00007FFF93053000-0x00007FFF93055000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3688-1-0x0000000000850000-0x0000000000868000-memory.dmp

    Filesize

    96KB

    Download

  • memory/3688-3-0x00007FFF93050000-0x00007FFF93B11000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3688-8-0x00007FFF93050000-0x00007FFF93B11000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3688-9-0x00007FFF93050000-0x00007FFF93B11000-memory.dmp

    Filesize

    10.8MB

    Download