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File name:

AsyncClient.exe

Full analysis: https://app.any.run/tasks/46f1da11-d6bc-4142-8cf8-8b36c923c7e3
Verdict: Malicious activity
Threats:

AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions.

Analysis date: April 01, 2023, 09:31:31
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
asyncrat
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

5234019C13209B67B6BE43278EA50A23

SHA1:

63A10D8B797A256945F16761D2683EB34A6C0863

SHA256:

6DE6DA13A518C92F77C4C079C14D33EF40B78A1BA59A49EFCCD479602E94E4AE

SSDEEP:

768:LuScq5TAYGTqWU8j+zmo2qLzKjGKG6PIyzjbFgX3iEQu/Po0aBDZbx:LuScq5TA5c2eKYDy3bCXSyXnEdbx

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.
  • MALICIOUS

    • ASYNCRAT detected by memory dumps

      • AsyncClient.exe (PID: 2588)
  • SUSPICIOUS

    • Connects to unusual port

      • AsyncClient.exe (PID: 2588)
  • INFO

    • Reads the computer name

      • AsyncClient.exe (PID: 2588)
    • The process checks LSA protection

      • AsyncClient.exe (PID: 2588)
    • Checks supported languages

      • AsyncClient.exe (PID: 2588)
    • Reads Environment values

      • AsyncClient.exe (PID: 2588)
    • Reads the machine GUID from the registry

      • AsyncClient.exe (PID: 2588)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

AsyncRat

(PID) Process(2588) AsyncClient.exe
Keys
AES48815e10eabd48b42bf18076df5fe246481ba53e03c8bc3ebfd289d27d5834b3
Saltbfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
Certificates
Cert1MIIE8jCCAtqgAwIBAgIQANvmXQ6HRZcVJVzDXLlKqzANBgkqhkiG9w0BAQ0FADAaMRgwFgYDVQQDDA9Bc3luY1JBVCBTZXJ2ZXIwIBcNMjMwMzMwMDkyNDA4WhgPOTk5OTEyMzEyMzU5NTlaMBoxGDAWBgNVBAMMD0FzeW5jUkFUIFNlcnZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAILb3mT1/Edq5h+qvms6Dbog1c9Uuuh/FutZTnq5E/8JZcGeOs91ddGZxR0lJgsU6PP/NflKPXve...
Server_SignatureS/JJ5bAGOqSRJbxoBa+For3DE5790DdoT60H/a3eEZKYFNDMk8MbvCEf6netmz3ebnS8l/rNLceCuLRkK+6lmwq2MME1+7Jb51KGCJLlwNrnMqUqO2qnUXjzaVFUniUAR6qNQNKm3Nj+IdJmoTOx3ENYSpppXQkAUg8s08N8WAJZkZHuYUcZYrx4J87kWIZnTea4VhZ38jVrgZWN9yK6YbvRs5KRkVWCM7lETAP7B78qx2MaFpXBb+F0i2QjZ8e0/lqU3+sUt8lBRMs4kxakWmqAcKjsBL4tzO8jSBlsCf0k...
Options
AutoRunfalse
MutexAsyncMutex_6SI8OkPnk
InstallFolder%AppData%
BSoDfalse
AntiVMfalse
Version0.5.7B
BotnetDefault
Ports (4)6606
7707
8808
15146
C2 (2)127.0.0.1
6.tcp.eu.ngrok.io
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

AssemblyVersion: 1.0.0.0
ProductVersion: 1.0.0.0
ProductName: -
OriginalFileName: Stub.exe
LegalTrademarks: -
LegalCopyright: -
InternalName: Stub.exe
FileVersion: 1.0.0.0
FileDescription: -
CompanyName: -
Comments: -
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 1.0.0.0
FileVersionNumber: 1.0.0.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0xc76e
UninitializedDataSize: -
InitializedDataSize: 2560
CodeSize: 43008
LinkerVersion: 8
PEType: PE32
ImageFileCharacteristics: Executable, 32-bit
TimeStamp: 2020:05:10 05:24:51+00:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 10-May-2020 05:24:51
Comments: -
CompanyName: -
FileDescription: -
FileVersion: 1.0.0.0
InternalName: Stub.exe
LegalCopyright: -
LegalTrademarks: -
OriginalFilename: Stub.exe
ProductName: -
ProductVersion: 1.0.0.0
Assembly Version: 1.0.0.0

DOS Header

Magic number: MZ
Bytes on last page of file: 0x0090
Pages in file: 0x0003
Relocations: 0x0000
Size of header: 0x0004
Min extra paragraphs: 0x0000
Max extra paragraphs: 0xFFFF
Initial SS value: 0x0000
Initial SP value: 0x00B8
Checksum: 0x0000
Initial IP value: 0x0000
Initial CS value: 0x0000
Overlay number: 0x0000
OEM identifier: 0x0000
OEM information: 0x0000
Address of NE header: 0x00000080

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 3
Time date stamp: 10-May-2020 05:24:51
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x0000A774
0x0000A800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.50833
.rsrc
0x0000E000
0x000007FF
0x00000800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.88507
.reloc
0x00010000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.0815394

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.22615
1171
UNKNOWN
UNKNOWN
RT_MANIFEST

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
35
Monitored processes
1
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start #ASYNCRAT asyncclient.exe

Process information

PID
CMD
Path
Indicators
Parent process
2588"C:\Users\admin\Desktop\AsyncClient.exe" C:\Users\admin\Desktop\AsyncClient.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Version:
1.0.0.0
Modules
Images
c:\users\admin\desktop\asyncclient.exe
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
AsyncRat
(PID) Process(2588) AsyncClient.exe
Keys
AES48815e10eabd48b42bf18076df5fe246481ba53e03c8bc3ebfd289d27d5834b3
Saltbfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
Certificates
Cert1MIIE8jCCAtqgAwIBAgIQANvmXQ6HRZcVJVzDXLlKqzANBgkqhkiG9w0BAQ0FADAaMRgwFgYDVQQDDA9Bc3luY1JBVCBTZXJ2ZXIwIBcNMjMwMzMwMDkyNDA4WhgPOTk5OTEyMzEyMzU5NTlaMBoxGDAWBgNVBAMMD0FzeW5jUkFUIFNlcnZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAILb3mT1/Edq5h+qvms6Dbog1c9Uuuh/FutZTnq5E/8JZcGeOs91ddGZxR0lJgsU6PP/NflKPXve...
Server_SignatureS/JJ5bAGOqSRJbxoBa+For3DE5790DdoT60H/a3eEZKYFNDMk8MbvCEf6netmz3ebnS8l/rNLceCuLRkK+6lmwq2MME1+7Jb51KGCJLlwNrnMqUqO2qnUXjzaVFUniUAR6qNQNKm3Nj+IdJmoTOx3ENYSpppXQkAUg8s08N8WAJZkZHuYUcZYrx4J87kWIZnTea4VhZ38jVrgZWN9yK6YbvRs5KRkVWCM7lETAP7B78qx2MaFpXBb+F0i2QjZ8e0/lqU3+sUt8lBRMs4kxakWmqAcKjsBL4tzO8jSBlsCf0k...
Options
AutoRunfalse
MutexAsyncMutex_6SI8OkPnk
InstallFolder%AppData%
BSoDfalse
AntiVMfalse
Version0.5.7B
BotnetDefault
Ports (4)6606
7707
8808
15146
C2 (2)127.0.0.1
6.tcp.eu.ngrok.io
Total events
752
Read events
724
Write events
28
Delete events
0

Modification events

(PID) Process:(2588) AsyncClient.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\16D\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

No data
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
1
DNS requests
2
Threats
0

HTTP requests

No HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2588
AsyncClient.exe
3.68.171.119:15146
6.tcp.eu.ngrok.io
AMAZON-02
DE
malicious

DNS requests

Domain
IP
Reputation
6.tcp.eu.ngrok.io
  • 3.68.171.119
malicious

Threats

PID
Process
Class
Message
Potential Corporate Privacy Violation
ET INFO DNS Query to a *.ngrok domain (ngrok.io)
Potential Corporate Privacy Violation
ET INFO DNS Query to a *.ngrok domain (ngrok.io)
No debug info