File name:

VOID.exe

Full analysis: https://app.any.run/tasks/a79f8de1-3bd3-4a65-ac16-b878664b9a24
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 15, 2021, 23:15:00
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
trojan
rat
asyncrat
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

9286726BDE538EFB64224C00173A070D

SHA1:

8F77142221CEC8D05416730623B25B99D0699804

SHA256:

B54A3E514265D9B3D8D22849651510F1EEEDB62EEFE50BD397860C7D2E136F63

SSDEEP:

768:XuwaNToEjaNLWU3zKZmo2q73KjGKG6PIyzjbFgX3imV3QCf51iBDZPx:XuwaNToqaS22KYDy3bCXSmV3VcdPx

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 was detected

      • VOID.exe (PID: 2592)
  • SUSPICIOUS

    • Checks supported languages

      • VOID.exe (PID: 2592)
    • Reads the computer name

      • VOID.exe (PID: 2592)
    • Reads Environment values

      • VOID.exe (PID: 2592)
  • INFO

    • Reads settings of System Certificates

      • VOID.exe (PID: 2592)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
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: 0xc75e
UninitializedDataSize: -
InitializedDataSize: 2560
CodeSize: 43008
LinkerVersion: 8
PEType: PE32
TimeStamp: 2020:05:10 07:24:51+02:00
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
0x0000A764
0x0000A800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.50643
.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
34
Monitored processes
1
Malicious processes
1
Suspicious processes
0

Behavior graph

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

Process information

PID
CMD
Path
Indicators
Parent process
2592"C:\Users\admin\AppData\Local\Temp\VOID.exe" C:\Users\admin\AppData\Local\Temp\VOID.exe
Explorer.EXE
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Version:
1.0.0.0
Modules
Images
c:\users\admin\appdata\local\temp\void.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\microsoft.net\framework\v4.0.30319\mscoreei.dll
Total events
4 274
Read events
4 262
Write events
12
Delete events
0

Modification events

(PID) Process:(2592) VOID.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\16B\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
Executable files
0
Suspicious files
3
Text files
0
Unknown types
1

Dropped files

PID
Process
Filename
Type
2592VOID.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506compressed
MD5:
SHA256:
2592VOID.exeC:\Users\admin\AppData\Local\Temp\TarA933.tmpcat
MD5:
SHA256:
2592VOID.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506binary
MD5:
SHA256:
2592VOID.exeC:\Users\admin\AppData\Local\Temp\CabA932.tmpcompressed
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
2
DNS requests
1
Threats
4

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2592
VOID.exe
GET
200
2.16.186.33:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?9263d0435da6b2b3
unknown
compressed
57.2 Kb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2592
VOID.exe
195.174.209.145:481
Turk Telekom
TR
malicious
2.16.186.33:80
ctldl.windowsupdate.com
Akamai International B.V.
whitelisted

DNS requests

Domain
IP
Reputation
ctldl.windowsupdate.com
  • 2.16.186.33
  • 2.16.186.25
whitelisted

Threats

PID
Process
Class
Message
2592
VOID.exe
A Network Trojan was detected
REMOTE [PTsecurity] AsyncRAT
2592
VOID.exe
A Network Trojan was detected
ET TROJAN Observed Malicious SSL Cert (AsyncRAT Server)
2592
VOID.exe
A Network Trojan was detected
REMOTE [PTsecurity] AsyncRAT
2592
VOID.exe
A Network Trojan was detected
REMOTE [PTsecurity] AsyncRAT Connection
No debug info