Overview

overview

10

Static

static

10

newClient.exe

windows7-x64

10

newClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • 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 17:13

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General

  • Target

    newClient.exe

  • Size

    63KB

  • MD5

    850f69a366c31db03ec8712b336f9fbd

  • SHA1

    9afdce442ef056c44cab85027b80d0f56bb65f79

  • SHA256

    1ad7ca994dc657ad56db324539251cacc030481d894351dd9e28575afd67c265

  • SHA512

    ef7014b9d8fb39dabea401d7acc9fd9c55c6aa1900c47743f6ae733dc71a2feaee5eccec0148bd6b9bb9edef681f9d5c0ac1c3d872b7cd02941047920731b28b

  • SSDEEP

    1536:F8iDBlH6vPpRjK0GbbRwVHv+Kr7qG7FZVclN:amlH6vPLjnGbbR62KPzY

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:7707

127.0.0.1:31576

yeswasdwasdwasd-31576.portmap.host:7707

yeswasdwasdwasd-31576.portmap.host:31576
Mutex

roaroaroaraoroaroaraoraoraoarororrohrorororoaroaaoaoaoaroaroar

Attributes
  • delay

    1

  • install

    true

  • install_file

    windows defender firewall.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 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\newClient.exe
    "C:\Users\Admin\AppData\Local\Temp\newClient.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4024
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3440
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4484
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9460.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1384
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:876
      • C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
        "C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9460.tmp.bat
    Filesize

    169B

    MD5

    c0f227bd2774ab1861ca4c05e9b02d33

    SHA1

    27b2750bb20dcc74332254ac3c952f2a22a994bb

    SHA256

    5fbfb189b496b77fd1625819c6a637be1b3647bde5ec585355fb5ee341c1d805

    SHA512

    4cb7e5e02afeb6205707f427b8cc8754c06a84dc37c6639d6465e27bc0e1fb6ea8682531b47da48874ae73e0d8471cd20cbfa62688ebbe39be070a38f2b26c47

    Download Submit

  • C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
    Filesize

    63KB

    MD5

    850f69a366c31db03ec8712b336f9fbd

    SHA1

    9afdce442ef056c44cab85027b80d0f56bb65f79

    SHA256

    1ad7ca994dc657ad56db324539251cacc030481d894351dd9e28575afd67c265

    SHA512

    ef7014b9d8fb39dabea401d7acc9fd9c55c6aa1900c47743f6ae733dc71a2feaee5eccec0148bd6b9bb9edef681f9d5c0ac1c3d872b7cd02941047920731b28b

    Download Submit

  • memory/4024-0-0x00007FFD64E23000-0x00007FFD64E25000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4024-1-0x0000000000D80000-0x0000000000D96000-memory.dmp

    Filesize

    88KB

    Download

  • memory/4024-2-0x00007FFD64E20000-0x00007FFD658E1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4024-7-0x00007FFD64E20000-0x00007FFD658E1000-memory.dmp

    Filesize

    10.8MB

    Download