File name:

Client-built.exe

Full analysis: https://app.any.run/tasks/aa0ad88a-3ddd-4e5a-b182-9a6142cf2beb
Verdict: Malicious activity
Threats:

Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim’s computer remotely.

Malware Trends Tracker     >>>
Analysis date: December 14, 2024, 01:51:10
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
quasar
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections
MD5:

2B94149C3F189FCFEB12BB357A5EF826

SHA1:

3AB132C97840BBD3295B9EBB5432D4996BDA7C60

SHA256:

CCD7A66E3FCF6461917A355C88B073598686A1F7E987378C0A271EE322EADB68

SSDEEP:

49152:CUEcsT90z2NkvSCmRf7uY1+DVlYZ+hHjGmt/3DgpraZSAdqGzdH6oGdEHIHHE22+:H2NkKCmRf7uY1+DVlYZ+hHaIDgaqXN

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

    • Changes the autorun value in the registry

      • Client-built.exe (PID: 1668)
      • Client.exe (PID: 5916)

    • QUASAR has been detected (YARA)

      • Client.exe (PID: 5916)

  • SUSPICIOUS

    • Starts itself from another location

      • Client-built.exe (PID: 1668)

    • Executable content was dropped or overwritten

      • Client-built.exe (PID: 1668)

  • INFO

    • Creates files or folders in the user directory

      • Client-built.exe (PID: 1668)

    • Reads the machine GUID from the registry

      • Client-built.exe (PID: 1668)
      • Client.exe (PID: 5916)

    • Reads Environment values

      • Client.exe (PID: 5916)
      • Client-built.exe (PID: 1668)

    • Reads the computer name

      • Client-built.exe (PID: 1668)
      • Client.exe (PID: 5916)

    • The process uses the downloaded file

      • Client-built.exe (PID: 1668)
      • Client.exe (PID: 5916)

    • Checks supported languages

      • Client-built.exe (PID: 1668)
      • Client.exe (PID: 5916)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

Quasar

(PID) Process(5916) Client.exe
Version1.4.1
C2 (2)192.168.4.70:4782
Sub_DirSubDir
Install_NameClient.exe
Mutex20b94a11-6f09-4a42-b723-e2b3fc07ea20
StartupQuasar Client Startup
Tagexe
LogDirLogs
SignatureX/r0vyEfSAuGGa6xbQ6QAvzVEDt4wPqHfNg/t0FCOUvZookBiBMkfjf94ws/57AihQMxDEeqTcFhksTlwXmEcK9sxpKuzel0WC/IFm8on2w2lx5g1aRigm5FNB6wnQvNwhf7mFvbkALnscUlbCu08MmztQE52lGWtXgtEmdFUyyQb3BLQyrXYMvDVP95Vgh57y4Q63ki/qsuHED4up4uAmtDln32mNUc/gPhUMvvMB7Bfj/KqwSNYP73uWjCtfTVsNmWIosbTh3s4DYwu1aziDijpKRln7zU2llKUGPPbexa...
CertificateMIIE9DCCAtygAwIBAgIQAICaavBjP3Zl8KOy5LbNszANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MTIxMjAxNDA1MloYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAgBCHjzkoRGHymM12EncPHhB9CfSW4EUoKbEPY/+mqvkBC+IRCIEBWqVC1gUqB+TE4aOVtzJV...
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: 1.4.1.0
ProductVersion: 1.4.1
ProductName: Quasar
OriginalFileName: Client.exe
LegalTrademarks: -
LegalCopyright: Copyright © MaxXor 2023
InternalName: Client.exe
FileVersion: 1.4.1
FileDescription: Quasar Client
CompanyName: -
Comments: -
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 1.4.1.0
FileVersionNumber: 1.4.1.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x31e40e
UninitializedDataSize: -
InitializedDataSize: 3584
CodeSize: 3261952
LinkerVersion: 8
PEType: PE32
ImageFileCharacteristics: Executable, 32-bit
TimeStamp: 2023:03:12 16:16:39+00:00
MachineType: Intel 386 or later, and compatibles
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
118
Monitored processes
2
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start client-built.exe #QUASAR client.exe

Process information

PID
CMD
Path
Indicators
Parent process
1668"C:\Users\admin\Desktop\Client-built.exe" C:\Users\admin\Desktop\Client-built.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Quasar Client
Exit code:
3
Version:
1.4.1
Modules
Images
c:\users\admin\desktop\client-built.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
5916"C:\Users\admin\AppData\Roaming\SubDir\Client.exe"C:\Users\admin\AppData\Roaming\SubDir\Client.exe
Client-built.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Quasar Client
Version:
1.4.1
Modules
Images
c:\users\admin\appdata\roaming\subdir\client.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
Quasar
(PID) Process(5916) Client.exe
Version1.4.1
C2 (2)192.168.4.70:4782
Sub_DirSubDir
Install_NameClient.exe
Mutex20b94a11-6f09-4a42-b723-e2b3fc07ea20
StartupQuasar Client Startup
Tagexe
LogDirLogs
SignatureX/r0vyEfSAuGGa6xbQ6QAvzVEDt4wPqHfNg/t0FCOUvZookBiBMkfjf94ws/57AihQMxDEeqTcFhksTlwXmEcK9sxpKuzel0WC/IFm8on2w2lx5g1aRigm5FNB6wnQvNwhf7mFvbkALnscUlbCu08MmztQE52lGWtXgtEmdFUyyQb3BLQyrXYMvDVP95Vgh57y4Q63ki/qsuHED4up4uAmtDln32mNUc/gPhUMvvMB7Bfj/KqwSNYP73uWjCtfTVsNmWIosbTh3s4DYwu1aziDijpKRln7zU2llKUGPPbexa...
CertificateMIIE9DCCAtygAwIBAgIQAICaavBjP3Zl8KOy5LbNszANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MTIxMjAxNDA1MloYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAgBCHjzkoRGHymM12EncPHhB9CfSW4EUoKbEPY/+mqvkBC+IRCIEBWqVC1gUqB+TE4aOVtzJV...
Total events
553
Read events
551
Write events
2
Delete events
0

Modification events

(PID) Process:(1668) Client-built.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Quasar Client Startup
Value:
"C:\Users\admin\AppData\Roaming\SubDir\Client.exe"
(PID) Process:(5916) Client.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Quasar Client Startup
Value:
"C:\Users\admin\AppData\Roaming\SubDir\Client.exe"
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
1668Client-built.exeC:\Users\admin\AppData\Roaming\SubDir\Client.exeexecutable
MD5:2B94149C3F189FCFEB12BB357A5EF826
SHA256:CCD7A66E3FCF6461917A355C88B073598686A1F7E987378C0A271EE322EADB68
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
18
DNS requests
7
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
4712
MoUsoCoreWorker.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
4712
MoUsoCoreWorker.exe
GET
200
2.16.164.49:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.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
—
—
192.168.100.255:137
—
—
—
whitelisted
4712
MoUsoCoreWorker.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
440
svchost.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
—
—
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
—
—
192.168.100.54:49678
—
—
—
unknown
440
svchost.exe
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
4712
MoUsoCoreWorker.exe
2.16.164.49:80
crl.microsoft.com
Akamai International B.V.
NL
whitelisted
4712
MoUsoCoreWorker.exe
95.101.149.131:80
www.microsoft.com
Akamai International B.V.
NL
whitelisted
3976
svchost.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.124.78.146
  • 20.73.194.208
whitelisted
google.com
  • 142.250.185.142
whitelisted
crl.microsoft.com
  • 2.16.164.49
  • 2.16.164.106
whitelisted
www.microsoft.com
  • 95.101.149.131
whitelisted
self.events.data.microsoft.com
  • 20.189.173.4
whitelisted

Threats

No threats detected
No debug info
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Reports
Client-built.exe