Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-12-2024 17:41

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General

  • Target

    Client.exe

  • Size

    48KB

  • MD5

    d9b8c518ec57c033af08d0bdb79066d6

  • SHA1

    a32af51564394ce258f8be78835d7a3d525a5a40

  • SHA256

    a4fe1b3db7fa16077a2631c87ba51db6477c0ca7444d2b5a78d9a8715ea4c0a7

  • SHA512

    9abf1cf1d73f63dbd5c2c36641af68f8b1ee8a13f35b428a49b21d1c7c150a8a91058def9fd98ba6bef99cbb6acbbf81fe396aab6dcfc11acce584f3c38f0c0d

  • SSDEEP

    768:O9WBILLEZ9+RiEtelDSN+iV08YbygeWYb1ywPvevEgK/JIZVc6KN:O9cfEtKDs4zb1tYbIwPvenkJIZVclN

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

127.0.0.1:40721

127.0.0.1:50140

Binky812-40721.portmap.host:8848

Binky812-40721.portmap.host:40721

Binky812-40721.portmap.host:50140

hell4563o-50140.portmap.host:8848

hell4563o-50140.portmap.host:40721

hell4563o-50140.portmap.host:50140
Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    MinecraftUpdater.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
  • 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 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:4348
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "MinecraftUpdater" /tr '"C:\Users\Admin\AppData\Roaming\MinecraftUpdater.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2616
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "MinecraftUpdater" /tr '"C:\Users\Admin\AppData\Roaming\MinecraftUpdater.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4060
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA4CB.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4908
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3720
      • C:\Users\Admin\AppData\Roaming\MinecraftUpdater.exe
        "C:\Users\Admin\AppData\Roaming\MinecraftUpdater.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4148

Network

MITRE ATT&CK Enterprise v15

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA4CB.tmp.bat
    Filesize

    160B

    MD5

    9363ed26af4b5c2307633b4ecc8e7c24

    SHA1

    43ff97863a29a66dd4ffef3706b07a5642fc0f6f

    SHA256

    c849db7639bdd3a8be71e665723a6503308befd6892f7b012b9f607520f0cc43

    SHA512

    b8163bcbc540621f70eb4be6bbe0ed241e1c372d2e4c48197bc902a3a6e6303d2b069af937a3223ffc9fbc91c41f88e28f2b268e147bcbede7bd6349aa385d2b

    Download Submit

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

    48KB

    MD5

    d9b8c518ec57c033af08d0bdb79066d6

    SHA1

    a32af51564394ce258f8be78835d7a3d525a5a40

    SHA256

    a4fe1b3db7fa16077a2631c87ba51db6477c0ca7444d2b5a78d9a8715ea4c0a7

    SHA512

    9abf1cf1d73f63dbd5c2c36641af68f8b1ee8a13f35b428a49b21d1c7c150a8a91058def9fd98ba6bef99cbb6acbbf81fe396aab6dcfc11acce584f3c38f0c0d

    Download Submit

  • memory/4348-1-0x0000000000960000-0x0000000000972000-memory.dmp

    Filesize

    72KB

    Download

  • memory/4348-0-0x00007FFAC20B3000-0x00007FFAC20B5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4348-2-0x00007FFAC20B0000-0x00007FFAC2B71000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4348-7-0x00007FFAC20B0000-0x00007FFAC2B71000-memory.dmp

    Filesize

    10.8MB

    Download