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Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

Analysis

  • max time kernel
    82s
  • max time network
    83s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/01/2025, 21:46

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Errors

Reason
Machine shutdown
Report Analysis Logs

General

  • Target

    Client.exe

  • Size

    48KB

  • MD5

    c455e1785b15f7ab254cfc3418803921

  • SHA1

    9164b636c9e11d1060009de5100a6b60e5f37837

  • SHA256

    7d7fefea4821294e42f1848ec0d0512398d53d75fad6130cf7d47384378d7bca

  • SHA512

    0b3acca31da5d6a477ecf36b4a97d2c2e76fae7b6663024222934304da46043a93ddead5551c402d47d709b89854f8d66b807f3f8d52911be3bfc5e26ef4eb2d

  • SSDEEP

    768:AWgtBBILDmY1+Vxi4telDSN+iV08YbygetBrUyvvEgK/JkEVc6KN:ADak84tKDs4zb1wB4yvnkJkEVclN

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    GoogleUpdate.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/rN9BXgA1

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
  • 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
  • Kills process with taskkill 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 5 IoCs
  • Suspicious use of WriteProcessMemory 14 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:3204
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:444
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:5084
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp84DF.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1320
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1128
      • C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe
        "C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2224
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4688
          • C:\Windows\system32\taskkill.exe
            taskkill /f /im svchost.exe
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:2880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp84DF.tmp.bat
    Filesize

    156B

    MD5

    5c924f0b8b94db8e8d5aad8a508928cb

    SHA1

    daef15bc78cad0f0ddfe3768126c61486da00f76

    SHA256

    91c3166d19ffa4c5fa0373a6f2cb985a73994c652b4eb0b1a7d39101451cb5f7

    SHA512

    b146430adcf9666625e425a3b3b11d556025b4e5f14131e60de2b6e57855c5f2727e59270b1a67fd934c73d074af06e1fb364e9a827df8e89d9527a8f52caf8d

    Download Submit

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

    48KB

    MD5

    c455e1785b15f7ab254cfc3418803921

    SHA1

    9164b636c9e11d1060009de5100a6b60e5f37837

    SHA256

    7d7fefea4821294e42f1848ec0d0512398d53d75fad6130cf7d47384378d7bca

    SHA512

    0b3acca31da5d6a477ecf36b4a97d2c2e76fae7b6663024222934304da46043a93ddead5551c402d47d709b89854f8d66b807f3f8d52911be3bfc5e26ef4eb2d

    Download Submit

  • memory/2224-14-0x000000001C1D0000-0x000000001C246000-memory.dmp

    Filesize

    472KB

    Download

  • memory/2224-15-0x000000001AD00000-0x000000001AD10000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2224-16-0x000000001AD30000-0x000000001AD4E000-memory.dmp

    Filesize

    120KB

    Download

  • memory/2224-17-0x000000001AFC0000-0x000000001AFDA000-memory.dmp

    Filesize

    104KB

    Download

  • memory/3204-0-0x00007FFD6F323000-0x00007FFD6F325000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3204-1-0x00000000004E0000-0x00000000004F2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/3204-2-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3204-7-0x00007FFD6F320000-0x00007FFD6FDE1000-memory.dmp

    Filesize

    10.8MB

    Download