File name:

rex.exe

Full analysis: https://app.any.run/tasks/b0e0cda0-86ee-4d2e-9088-c92dab605f9c
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.

Malware Trends Tracker     >>>
Analysis date: October 10, 2024, 17:12:05
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
asyncrat
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

F9167C360E2D98E3D6CDC7BD1BBB6BBB

SHA1:

5C1F2E1FB6C9767948EF64E822EF53B3059A8410

SHA256:

6DBB801D621A57C4B4CB499ACABAAA597C27DB6050A7E98EB22D5111A0D4DEA6

SSDEEP:

1536:aXWwYwPH17PJ6KsQQU5nYzZKgQ0hi/6GUIbJUuBoOcd4mL4:aXWwYwPH17hRdYtKg9g/1UIbJUuBE74

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 has been detected (YARA)

      • svchost.exe (PID: 7128)

  • SUSPICIOUS

    • Uses TIMEOUT.EXE to delay execution

      • cmd.exe (PID: 6184)

    • Executing commands from a ".bat" file

      • rex.exe (PID: 6548)

    • Starts CMD.EXE for commands execution

      • rex.exe (PID: 6548)

    • The executable file from the user directory is run by the CMD process

      • svchost.exe (PID: 7128)

    • Executable content was dropped or overwritten

      • rex.exe (PID: 6548)

  • INFO

    • Reads the computer name

      • rex.exe (PID: 6548)

    • Reads the machine GUID from the registry

      • rex.exe (PID: 6548)

    • Checks supported languages

      • rex.exe (PID: 6548)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

AsyncRat

(PID) Process(7128) svchost.exe
C2 (1)127.0.0.1
Ports (3)6606
7707
8808
Version0.5.8
BotnetDefault
Options
AutoRuntrue
MutexWJ7ad2hfOKxk
InstallFolder%Temp%
BSoDfalse
AntiVMtrue
Certificates
Cert1MIIE8jCCAtqgAwIBAgIQAPj/kU+PJqwx8GDbpJbTozANBgkqhkiG9w0BAQ0FADAaMRgwFgYDVQQDDA9Bc3luY1JBVCBTZXJ2ZXIwIBcNMjQwOTE3MTI1NTU1WhgPOTk5OTEyMzEyMzU5NTlaMBoxGDAWBgNVBAMMD0FzeW5jUkFUIFNlcnZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAIc0zGLZdymvwL5Wb10xbjhksKEcoHG4KU3cPFEXVPlM5HqVNUJT4g4Pq4dhfVY1bdAW+phRQBU9...
Server_Signaturehk8A/U3RPqyT/QIy9uDEnxAwnV61wZkdazQOavA3zXLc0fIXefKhzy7OURlABxyYdaS2P40cKO/HpFfLetdHbcXQkbzi9CCjSx0omJaVycn8BiCZwPXx9vXlOeXqG9yXbMb5OGhmWkJBONB4fcmTEgJwuw07AG5HwGmSa+KKu2wGTHYLlgHI/d0oW+NY9AGn7mmfTKtnIq8D6+zjGGyu9LjPyQn7/rYuLGTkWPygveMJ9O1ohx4P4UFcW97ETyMYb55N94Zgnzk9KHcG04XXe/eOE4gt8T/5/0Tya7F6bjRv...
Keys
AES1a2332a5e51e4c4a911bcfd875c69f408dffc4de6279b43ab9181c5ef78ad901
Saltbfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (82.9)
.dll | Win32 Dynamic Link Library (generic) (7.4)
.exe | Win32 Executable (generic) (5.1)
.exe | Generic Win/DOS Executable (2.2)
.exe | DOS Executable Generic (2.2)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2023:10:16 21:40:53+00:00
ImageFileCharacteristics: Executable, 32-bit
PEType: PE32
LinkerVersion: 8
CodeSize: 45568
InitializedDataSize: 4608
UninitializedDataSize: -
EntryPoint: 0xd03e
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 1.0.0.0
ProductVersionNumber: 1.0.0.0
FileFlagsMask: 0x003f
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Neutral
CharacterSet: Unicode
Comments: -
CompanyName: Rex Softworks
FileDescription: Level 7 Clientsided Executor
FileVersion: 1.0.0.0
InternalName: rex.exe
LegalCopyright: -
LegalTrademarks: -
OriginalFileName: rex.exe
ProductName: Rex Executor
ProductVersion: 1.0.0.0
AssemblyVersion: 1.0.0.0
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
130
Monitored processes
5
Malicious processes
3
Suspicious processes
0

Behavior graph

Click at the process to see the details
start rex.exe cmd.exe no specs conhost.exe no specs timeout.exe no specs #ASYNCRAT svchost.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
6184C:\WINDOWS\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\tmpCA8C.tmp.bat""C:\Windows\SysWOW64\cmd.exe—rex.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
1
Version:
10.0.19041.3636 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
6356\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
6548"C:\Users\admin\Desktop\rex.exe" C:\Users\admin\Desktop\rex.exe
explorer.exe
User:
admin
Company:
Rex Softworks
Integrity Level:
MEDIUM
Description:
Level 7 Clientsided Executor
Exit code:
0
Version:
1.0.0.0
Modules
Images
c:\users\admin\desktop\rex.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\mscoree.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
7124timeout 3 C:\Windows\SysWOW64\timeout.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
timeout - pauses command processing
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\timeout.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\user32.dll
7128"C:\Users\admin\AppData\Local\Temp\svchost.exe" C:\Users\admin\AppData\Local\Temp\svchost.exe
cmd.exe
User:
admin
Company:
Rex Softworks
Integrity Level:
MEDIUM
Description:
Level 7 Clientsided Executor
Version:
1.0.0.0
Modules
Images
c:\users\admin\appdata\local\temp\svchost.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\mscoree.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
AsyncRat
(PID) Process(7128) svchost.exe
C2 (1)127.0.0.1
Ports (3)6606
7707
8808
Version0.5.8
BotnetDefault
Options
AutoRuntrue
MutexWJ7ad2hfOKxk
InstallFolder%Temp%
BSoDfalse
AntiVMtrue
Certificates
Cert1MIIE8jCCAtqgAwIBAgIQAPj/kU+PJqwx8GDbpJbTozANBgkqhkiG9w0BAQ0FADAaMRgwFgYDVQQDDA9Bc3luY1JBVCBTZXJ2ZXIwIBcNMjQwOTE3MTI1NTU1WhgPOTk5OTEyMzEyMzU5NTlaMBoxGDAWBgNVBAMMD0FzeW5jUkFUIFNlcnZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAIc0zGLZdymvwL5Wb10xbjhksKEcoHG4KU3cPFEXVPlM5HqVNUJT4g4Pq4dhfVY1bdAW+phRQBU9...
Server_Signaturehk8A/U3RPqyT/QIy9uDEnxAwnV61wZkdazQOavA3zXLc0fIXefKhzy7OURlABxyYdaS2P40cKO/HpFfLetdHbcXQkbzi9CCjSx0omJaVycn8BiCZwPXx9vXlOeXqG9yXbMb5OGhmWkJBONB4fcmTEgJwuw07AG5HwGmSa+KKu2wGTHYLlgHI/d0oW+NY9AGn7mmfTKtnIq8D6+zjGGyu9LjPyQn7/rYuLGTkWPygveMJ9O1ohx4P4UFcW97ETyMYb55N94Zgnzk9KHcG04XXe/eOE4gt8T/5/0Tya7F6bjRv...
Keys
AES1a2332a5e51e4c4a911bcfd875c69f408dffc4de6279b43ab9181c5ef78ad901
Saltbfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
Total events
710
Read events
709
Write events
1
Delete events
0

Modification events

(PID) Process:(6548) rex.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:svchost
Value:
"C:\Users\admin\AppData\Local\Temp\svchost.exe"
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
6548rex.exeC:\Users\admin\AppData\Local\Temp\svchost.exeexecutable
MD5:F9167C360E2D98E3D6CDC7BD1BBB6BBB
SHA256:6DBB801D621A57C4B4CB499ACABAAA597C27DB6050A7E98EB22D5111A0D4DEA6
6548rex.exeC:\Users\admin\AppData\Local\Temp\tmpCA8C.tmp.battext
MD5:2A7B528E9969229AEC01B0E853DDB942
SHA256:6A932558D445499BE3118F97CA8091436D02A1B7E5D3CFCEB574172DA7A48234
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
23
DNS requests
9
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
1588
RUXIMICS.exe
GET
200
23.48.23.145:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
6944
svchost.exe
GET
200
23.48.23.145:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
5488
MoUsoCoreWorker.exe
GET
200
23.48.23.145:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
6944
svchost.exe
GET
200
84.53.189.236:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
1588
RUXIMICS.exe
GET
200
84.53.189.236:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
5488
MoUsoCoreWorker.exe
GET
200
84.53.189.236:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
6944
svchost.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
1588
RUXIMICS.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
5488
MoUsoCoreWorker.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
—
—
23.212.110.163:443
www.bing.com
Akamai International B.V.
CZ
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
6944
svchost.exe
23.48.23.145:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
1588
RUXIMICS.exe
23.48.23.145:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
5488
MoUsoCoreWorker.exe
23.48.23.145:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
6944
svchost.exe
84.53.189.236:80
www.microsoft.com
AKAMAI-AS
NL
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 40.127.240.158
  • 20.73.194.208
whitelisted
www.bing.com
  • 23.212.110.163
  • 23.212.110.185
  • 23.212.110.171
  • 23.212.110.184
  • 23.212.110.170
  • 23.212.110.168
  • 23.212.110.176
  • 23.212.110.179
  • 23.212.110.177
whitelisted
google.com
  • 142.250.186.110
whitelisted
crl.microsoft.com
  • 23.48.23.145
  • 23.48.23.176
  • 23.48.23.164
  • 23.48.23.147
  • 23.48.23.143
  • 23.48.23.177
  • 23.48.23.156
whitelisted
www.microsoft.com
  • 84.53.189.236
whitelisted
self.events.data.microsoft.com
  • 40.79.150.121
whitelisted

Threats

No threats detected
No debug info
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Reports
rex.exe