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Overview

overview

10

Static

static

10

newClient.exe

windows7-x64

10

newClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    146s
  • max time network
    151s
  • 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, 17:14

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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:3908
    • 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:1928
      • 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:3744
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp84FF.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4436
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3228
      • 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:3452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp84FF.tmp.bat
    Filesize

    169B

    MD5

    1276defd260c610395a1e3d449afa8ab

    SHA1

    722b8b0d1c0911738abff75d30af0dc1508068fd

    SHA256

    43aa0d396df03f6f61acf6344d85500347311cd3f855c0bfac92230e9c6e3eb1

    SHA512

    26adc6fdac9c4b904d627260cacc7cb40283111a00c7bac99e17cc69729581130a6aa1b9e3de22e884f5b8995eab6f6f25cb0367cd8d148e4b71fa038b73f8e6

    Download Submit

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

    63KB

    MD5

    850f69a366c31db03ec8712b336f9fbd

    SHA1

    9afdce442ef056c44cab85027b80d0f56bb65f79

    SHA256

    1ad7ca994dc657ad56db324539251cacc030481d894351dd9e28575afd67c265

    SHA512

    ef7014b9d8fb39dabea401d7acc9fd9c55c6aa1900c47743f6ae733dc71a2feaee5eccec0148bd6b9bb9edef681f9d5c0ac1c3d872b7cd02941047920731b28b

    Download Submit

  • memory/3908-0-0x00007FFF6B503000-0x00007FFF6B505000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3908-1-0x0000000000F20000-0x0000000000F36000-memory.dmp

    Filesize

    88KB

    Download

  • memory/3908-2-0x00007FFF6B500000-0x00007FFF6BFC1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3908-7-0x00007FFF6B500000-0x00007FFF6BFC1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3908-8-0x00007FFF6B500000-0x00007FFF6BFC1000-memory.dmp

    Filesize

    10.8MB

    Download