Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    158s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-04-2023 04:48

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General

  • Target

    Client.exe

  • Size

    74KB

  • MD5

    3566c4f706bbebb67878a461e23dc196

  • SHA1

    988d9336640ae8c8f59d7ee40e5cbb01a72f47a5

  • SHA256

    3b475cf40bdd62b35e9804b7cb8dafbe706e6dde37780dc6d0dbba22caf20d2c

  • SHA512

    9c00a17b07896307af56b229587158babdd50ae2bae7564c4cf7f18ad326d4617e4a0fba4ad49a603fc10cc505e057bf9fe492645bc97b3bc2d45e927f361fe0

  • SSDEEP

    1536:hUjacx+pEgCC8PMVHe9VdQuDI6H1bf/CBQQzcyLVclN:hUGcx+Dt8PMVHe9VdQsH1bf6yQjBY

Score
10/10
asyncrat2023discoveryrat

Malware Config

Extracted

Family

asyncrat

Version

Venom Pwn3rzs' Edtition v6.0.1

Botnet

2023

C2

85.192.40.255:4449

Mutex

dsyuvsavyiusayviolusayiulvasikuviu

Attributes
  • delay

    1

  • install

    true

  • install_file

    fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Async RAT payload 3 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
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 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:3820
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg" /tr '"C:\Users\Admin\AppData\Roaming\fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1068
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg" /tr '"C:\Users\Admin\AppData\Roaming\fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:212
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp782.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2660
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4168
      • C:\Users\Admin\AppData\Roaming\fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg.exe
        "C:\Users\Admin\AppData\Roaming\fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3900

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp782.tmp.bat
    Filesize

    217B

    MD5

    ae176c010a9880a1d23d0f4fc452c5b0

    SHA1

    a8412483fb7d204db9fa690f0abd28fd3d0a8672

    SHA256

    0bde1ad60dda98a999e4a859d8a66def60edb6d7f108a9e68a3b8ac8f5b5d745

    SHA512

    c66a3171c8289e9c905ac9f1d27c732976cdf5e650ff987daa7b5cdadd8d4eda4d28d15cb50dd79f9d1c0b6a5a3251cbd4871da6b73584eb3c694c16fe6d2cc9

    Download Submit
  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

    Download Submit
  • C:\Users\Admin\AppData\Roaming\fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg.exe
    Filesize

    74KB

    MD5

    3566c4f706bbebb67878a461e23dc196

    SHA1

    988d9336640ae8c8f59d7ee40e5cbb01a72f47a5

    SHA256

    3b475cf40bdd62b35e9804b7cb8dafbe706e6dde37780dc6d0dbba22caf20d2c

    SHA512

    9c00a17b07896307af56b229587158babdd50ae2bae7564c4cf7f18ad326d4617e4a0fba4ad49a603fc10cc505e057bf9fe492645bc97b3bc2d45e927f361fe0

    Download Submit
  • C:\Users\Admin\AppData\Roaming\fuikvhafdjkbvjksfdbjhkshdfkjbhajdkfbjkhdsagfhjdsajbgdjhksfagbhjikdfsgjhbkg.exe
    Filesize

    74KB

    MD5

    3566c4f706bbebb67878a461e23dc196

    SHA1

    988d9336640ae8c8f59d7ee40e5cbb01a72f47a5

    SHA256

    3b475cf40bdd62b35e9804b7cb8dafbe706e6dde37780dc6d0dbba22caf20d2c

    SHA512

    9c00a17b07896307af56b229587158babdd50ae2bae7564c4cf7f18ad326d4617e4a0fba4ad49a603fc10cc505e057bf9fe492645bc97b3bc2d45e927f361fe0

    Download Submit
  • memory/3820-133-0x0000000000A70000-0x0000000000A88000-memory.dmp
    Filesize

    96KB

    Download
  • memory/3820-135-0x000000001B600000-0x000000001B610000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3900-145-0x0000000002730000-0x0000000002740000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3900-146-0x0000000002730000-0x0000000002740000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3900-147-0x0000000002730000-0x0000000002740000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3900-148-0x0000000002730000-0x0000000002740000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3900-149-0x0000000002730000-0x0000000002740000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3900-150-0x0000000002730000-0x0000000002740000-memory.dmp
    Filesize

    64KB

    Download