Overview

overview

10

Static

static

10

CVROV_Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/04/2025, 08:00

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General

  • Target

    CVROV_Client.exe

  • Size

    74KB

  • MD5

    5e793c335088bb693567b99127bc09b8

  • SHA1

    b441f74292163a62f8de32f684ebf2d17741ca1b

  • SHA256

    231a17f1d1c801f6fdca6fcc20d719abb4579dbc975cfa6bf58c0eb549193475

  • SHA512

    3ee249faf035ada4730f00fc8d201007dbea8c6edf18030d21f89322d6761ad24912cf19e68b556ab45491ae8e3f8cadffc003961c42672af17383973406c3a7

  • SSDEEP

    1536:QUpDcxvuoClufPMVKe9VdQuDI6H1bf/FwQzclLVclN:QUJcxvV3fPMVKe9VdQsH1bfNwQkBY

Score
10/10
asyncratvenomratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

L838 RAT v1.0.0

Botnet

Default

C2

127.0.0.1:54984

coinbasecrashout.ddns.net:54984
Mutex

sfsafqagbiv

Attributes
  • delay

    1

  • install

    true

  • install_file

    Runtime Broker.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
  • VenomRAT 2 IoCs

    Detects VenomRAT.

    rat
  • Venomrat family
    venomrat
  • 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
    defense_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\CVROV_Client.exe
    "C:\Users\Admin\AppData\Local\Temp\CVROV_Client.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5852
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Runtime Broker" /tr '"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:736
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Runtime Broker" /tr '"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4992
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8E55.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4928
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4708
      • C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
        "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3396

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8E55.tmp.bat
    Filesize

    158B

    MD5

    fbb5030d9311a2ccaacd7c1bc79f4385

    SHA1

    66019fe32f52418a6741f40be6b8dcbe92692267

    SHA256

    04f531a01871efc15892ae396aa8298d47ae45f3e2e7541dbc3a6ca5de9c6c10

    SHA512

    368c0218ab8e3380cff23b558de76a7813651b0b96914825ddcc0bb4c99d77d4f77bbada38af5de613c229725b3074ab2a02b27fcdb23fd7c860d2a059b899b9

    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\Runtime Broker.exe
    Filesize

    74KB

    MD5

    5e793c335088bb693567b99127bc09b8

    SHA1

    b441f74292163a62f8de32f684ebf2d17741ca1b

    SHA256

    231a17f1d1c801f6fdca6fcc20d719abb4579dbc975cfa6bf58c0eb549193475

    SHA512

    3ee249faf035ada4730f00fc8d201007dbea8c6edf18030d21f89322d6761ad24912cf19e68b556ab45491ae8e3f8cadffc003961c42672af17383973406c3a7

    Download Submit

  • memory/5852-0-0x00007FFC45743000-0x00007FFC45745000-memory.dmp

    Filesize

    8KB

    Download

  • memory/5852-1-0x0000000000940000-0x0000000000958000-memory.dmp

    Filesize

    96KB

    Download

  • memory/5852-3-0x00007FFC45740000-0x00007FFC46201000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/5852-8-0x00007FFC45740000-0x00007FFC46201000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/5852-9-0x00007FFC45740000-0x00007FFC46201000-memory.dmp

    Filesize

    10.8MB

    Download