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Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/08/2024, 02:14

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General

  • Target

    Client.exe

  • Size

    48KB

  • MD5

    a41754aa9cfd098e0f31fce03ab38166

  • SHA1

    22946a1c7828ab7a5f218b6a815350fc0e1d1c1b

  • SHA256

    f4876b06da96639271728c1c65aff064d45de3307a09f17d04686c0bf410bcc7

  • SHA512

    5cc51386415d49e6d4c87111f6674347568047ad3420f8095559f0d077b5f7593506a34d4877765563ff0feccf50c9d1b7501452ab7dc6ce611768571d248cd9

  • SSDEEP

    768:UVNYu9bVIILoech+ri0telDSN+iV08YbygeQVzZE3GdvEgK/JvZVc6KN:UVG7Z0tKDs4zb1lVzZEEnkJvZVclN

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

Mutex

DcRatMutex_qwqdanchun

Attributes
  • c2_url_file

    https://Pastebin.com/raw/fevFJe98

  • delay

    1

  • install

    true

  • install_file

    nigger.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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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:3316
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "nigger" /tr '"C:\Users\Admin\AppData\Roaming\nigger.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2420
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "nigger" /tr '"C:\Users\Admin\AppData\Roaming\nigger.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:692
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp491A.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2776
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2208
      • C:\Users\Admin\AppData\Roaming\nigger.exe
        "C:\Users\Admin\AppData\Roaming\nigger.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1652
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4612,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4180 /prefetch:8
    1⤵
      PID:1656

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp491A.tmp.bat
      Filesize

      150B

      MD5

      3dc8f026aa682a3420bc70644dbf2d8a

      SHA1

      064b6cfa82f3ba93917c51ba371e7be62a3b82d8

      SHA256

      99fee74ffe1b9656f3fe9d5ef0ee29500675039469f8c9b4b9d69695f5eef408

      SHA512

      d2c690226088c3b6932a560171c0f88f1720256b77875c681837b8ccbdb4ea6cd70b6a3d2a17a29114b6e143677392346d83e9e94574dcbacd9c45ff2f8b4120

      Download Submit

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

      48KB

      MD5

      a41754aa9cfd098e0f31fce03ab38166

      SHA1

      22946a1c7828ab7a5f218b6a815350fc0e1d1c1b

      SHA256

      f4876b06da96639271728c1c65aff064d45de3307a09f17d04686c0bf410bcc7

      SHA512

      5cc51386415d49e6d4c87111f6674347568047ad3420f8095559f0d077b5f7593506a34d4877765563ff0feccf50c9d1b7501452ab7dc6ce611768571d248cd9

      Download Submit

    • memory/3316-1-0x00000000002B0000-0x00000000002C2000-memory.dmp

      Filesize

      72KB

      Download

    • memory/3316-0-0x00007FFDE97A3000-0x00007FFDE97A5000-memory.dmp

      Filesize

      8KB

      Download

    • memory/3316-2-0x00007FFDE97A0000-0x00007FFDEA261000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3316-7-0x00007FFDE97A0000-0x00007FFDEA261000-memory.dmp

      Filesize

      10.8MB

      Download