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Overview

overview

10

Static

static

10

Loader.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    61s
  • max time network
    62s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2024, 00:16

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General

  • Target

    Loader.exe

  • Size

    74KB

  • MD5

    7a545dbf06e65f7f17f04ae0f5153e0e

  • SHA1

    ab20193637edd250eac59fd71b6ea2b7a0faaad4

  • SHA256

    c3556cd1169de28cb9f6ba3a06a875f756b1bbadfb51b7ce00c92f23d2cd4f5d

  • SHA512

    98a56663c90195b0b22df4dcfd72cc4717e445d5eaa2f4571443becbe38a77121835073cbf56377f5cc11849e160dbe9e156fcff8a3fab2efd9aa97a1876d0d1

  • SSDEEP

    1536:wUKUcxoyR1CriPMVzrqVBYgImH1bz/mmB4Qzc2EVclN:wUzcxoyXkiPMVzrqVHH1bz/4QD2Y

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

66.66.146.74:9511

Mutex

8906005788005HTGF

Attributes
  • delay

    1

  • install

    true

  • install_file

    WINDOWS.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Asyncrat family
    asyncrat
  • 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 64 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\Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\Loader.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4400
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2560
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4140
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB9EA.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4116
      • C:\Users\Admin\AppData\Roaming\WINDOWS.exe
        "C:\Users\Admin\AppData\Roaming\WINDOWS.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB9EA.tmp.bat
    Filesize

    151B

    MD5

    7280c00727aa3adfb6808e80c0a4cc69

    SHA1

    61434ab6ad2ab251e025826b1b0d6b7447a8a01c

    SHA256

    f80b623369f5ce617404e9ca4ddcd8b6427f09b05a599a88fc700055659f8df7

    SHA512

    c7d4cea17a44ec11c501e83a4484ab7d8e2c8e5d275d24ef2569b98a86feaa5b212a7be7206cd4e0801bf01de22f7bf8a1d49e720134ba411503a247b5e80963

    Download Submit

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

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

    Download Submit

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

    74KB

    MD5

    7a545dbf06e65f7f17f04ae0f5153e0e

    SHA1

    ab20193637edd250eac59fd71b6ea2b7a0faaad4

    SHA256

    c3556cd1169de28cb9f6ba3a06a875f756b1bbadfb51b7ce00c92f23d2cd4f5d

    SHA512

    98a56663c90195b0b22df4dcfd72cc4717e445d5eaa2f4571443becbe38a77121835073cbf56377f5cc11849e160dbe9e156fcff8a3fab2efd9aa97a1876d0d1

    Download Submit

  • memory/1000-16-0x000000001C880000-0x000000001C8F6000-memory.dmp

    Filesize

    472KB

    Download

  • memory/1000-17-0x0000000002920000-0x000000000292E000-memory.dmp

    Filesize

    56KB

    Download

  • memory/1000-18-0x000000001B390000-0x000000001B3AE000-memory.dmp

    Filesize

    120KB

    Download

  • memory/4400-0-0x00007FFF17D33000-0x00007FFF17D35000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4400-1-0x0000000000690000-0x00000000006A8000-memory.dmp

    Filesize

    96KB

    Download

  • memory/4400-3-0x00007FFF17D30000-0x00007FFF187F1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4400-8-0x00007FFF17D30000-0x00007FFF187F1000-memory.dmp

    Filesize

    10.8MB

    Download