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Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    105s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/07/2024, 05:58

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General

  • Target

    Client.exe

  • Size

    98KB

  • MD5

    32ea99984c4ac087a13d62ee493c0e5b

  • SHA1

    b74425cc3b69bfe2f8b5ac6f5d0e661d8a646f5e

  • SHA256

    3d4fae60580e8c72482beea430dea8f3ed64e64bce3abe15150a26de0fffa7fe

  • SHA512

    5064c78c2b8e145105eac87c154a13eb939f8dd4eac59a09c48fd8703195cbc8ed979302b1b6bc5d5b552dc4baf6584175c986d1e721c6f8d55ecc6ae02f0e2f

  • SSDEEP

    3072:oUvicxK8WmPMV2e9VdQsH1bf7eQhvWc3fBY:ocWmPMV2aesVbqKT3p

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

147.185.221.21:4449

147.185.221.21:6703

147.185.221.21:5552
Mutex

iyxtncnzhjunacoyx

Attributes
  • delay

    1

  • install

    true

  • install_file

    EaxSet.exe

  • install_folder

    %AppData%

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
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • 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 26 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\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4992
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "EaxSet" /tr '"C:\Users\Admin\AppData\Roaming\EaxSet.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1700
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "EaxSet" /tr '"C:\Users\Admin\AppData\Roaming\EaxSet.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2788
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB13F.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:100
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1532
      • C:\Users\Admin\AppData\Roaming\EaxSet.exe
        "C:\Users\Admin\AppData\Roaming\EaxSet.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2704

Network

MITRE ATT&CK Enterprise v15

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB13F.tmp.bat
    Filesize

    150B

    MD5

    8f3ce331f1aa16c5c207a83008d04704

    SHA1

    09b73bc5b69e826f5c9e0c2270ca47fcd247f3b6

    SHA256

    1a103b0b751c7316e65071a167206ec8a6d520629b749d89a1e5524c2c763338

    SHA512

    f49551a6d1fc972abe9d7e8d9f3c0f898b90a6ba2294c2a6b334598ffd596db3baf2673372566d7241b99d7df6daa24d8aea95cf992c2e4a0c883aeb700f7371

    Download Submit

  • C:\Users\Admin\AppData\Roaming\EaxSet.exe
    Filesize

    98KB

    MD5

    32ea99984c4ac087a13d62ee493c0e5b

    SHA1

    b74425cc3b69bfe2f8b5ac6f5d0e661d8a646f5e

    SHA256

    3d4fae60580e8c72482beea430dea8f3ed64e64bce3abe15150a26de0fffa7fe

    SHA512

    5064c78c2b8e145105eac87c154a13eb939f8dd4eac59a09c48fd8703195cbc8ed979302b1b6bc5d5b552dc4baf6584175c986d1e721c6f8d55ecc6ae02f0e2f

    Download Submit

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

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

    Download Submit

  • memory/4992-0-0x00007FFF09543000-0x00007FFF09545000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4992-1-0x00000000001A0000-0x00000000001BE000-memory.dmp

    Filesize

    120KB

    Download

  • memory/4992-3-0x00007FFF09540000-0x00007FFF0A001000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4992-8-0x00007FFF09540000-0x00007FFF0A001000-memory.dmp

    Filesize

    10.8MB

    Download