Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-06-2024 00:15

General

  • Target

    VXM.exe

  • Size

    63KB

  • MD5

    829239de570b423d6cf714c6f2f9d2cd

  • SHA1

    1dce551d2edf5e5f8d992a9073ed5d7f3868995e

  • SHA256

    1f10695674a259c0898cbfe22804af23807aebcc604f63a117afaf142c6ddbcb

  • SHA512

    a4fcfeeb61e1aaabd3f299f944c4de6190bc1c933b298c97a1e606824514549030370acb6c90120f9d195130afe1b2ce8138c5c18ad6d055113d0cb219986d2d

  • SSDEEP

    768:MwmjppBf5978fEC8A+XYcliE4oWudjzJoB1+T4gSEGHmDbDuph0oX3YBXlSuclph:oF533R3NzJqbzUbYh93luclpqKmY7

Score
10/10

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

Attributes
  • delay

    1

  • install

    true

  • install_file

    Fortnite Cheats.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • 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
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\VXM.exe
    "C:\Users\Admin\AppData\Local\Temp\VXM.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4888
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Fortnite Cheats" /tr '"C:\Users\Admin\AppData\Local\Temp\Fortnite Cheats.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Fortnite Cheats" /tr '"C:\Users\Admin\AppData\Local\Temp\Fortnite Cheats.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1780
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD83F.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1420
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4768
      • C:\Users\Admin\AppData\Local\Temp\Fortnite Cheats.exe
        "C:\Users\Admin\AppData\Local\Temp\Fortnite Cheats.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4928
  • 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 --no-appcompat-clear --mojo-platform-channel-handle=3688 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:836

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Persistence

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Privilege Escalation

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      63KB

      MD5

      829239de570b423d6cf714c6f2f9d2cd

      SHA1

      1dce551d2edf5e5f8d992a9073ed5d7f3868995e

      SHA256

      1f10695674a259c0898cbfe22804af23807aebcc604f63a117afaf142c6ddbcb

      SHA512

      a4fcfeeb61e1aaabd3f299f944c4de6190bc1c933b298c97a1e606824514549030370acb6c90120f9d195130afe1b2ce8138c5c18ad6d055113d0cb219986d2d

    • C:\Users\Admin\AppData\Local\Temp\tmpD83F.tmp.bat
      Filesize

      162B

      MD5

      3963a4748b30d91d9c6038c53714ee0f

      SHA1

      4454387ab82e60c5230ebc0a8b2533451bd7da73

      SHA256

      5893aa9457ef7fa2c9767a837e2f95a4b540e8ea55bc7b9b9bf60028ffd2b447

      SHA512

      cb8301a963a1abaae9c7b74eeb35f6494e4e016a2547d16d384537f25f86baf7cd783c48472ae76f9e1288212152ea787b3677ae73262f1496322215ad07b5c2

    • memory/4888-0-0x00007FF984463000-0x00007FF984465000-memory.dmp
      Filesize

      8KB

    • memory/4888-1-0x0000000000380000-0x0000000000396000-memory.dmp
      Filesize

      88KB

    • memory/4888-2-0x00007FF984460000-0x00007FF984F21000-memory.dmp
      Filesize

      10.8MB

    • memory/4888-7-0x00007FF984460000-0x00007FF984F21000-memory.dmp
      Filesize

      10.8MB

    • memory/4888-8-0x00007FF984460000-0x00007FF984F21000-memory.dmp
      Filesize

      10.8MB