File name:

Client-built.exe

Full analysis: https://app.any.run/tasks/cbd3e2ba-96da-44a6-af83-f89cd56c5528
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: April 15, 2024, 16:53:23
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
quasar
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

9F2C9C8F1E227BFF7AAF17A8DFCC5E52

SHA1:

04D5D1CCDF36C64B6DBE4B3F0E144048065E3973

SHA256:

0F34B045728E701EC2A70EF07A38F00058C1679AA6E27B91BE65FF9C01D0F6CD

SSDEEP:

49152:oVgGOhX02hD2nPiLq3A6770DODdl/rADxXhCk/3DgRjIh/0KiKgUOzQbVI3zvk11:f2nP6q3A6770DODdl/rADxRLDgyIa6E

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

    • Drops the executable file immediately after the start

      • Client-built.exe (PID: 3208)

    • Changes the autorun value in the registry

      • Client-built.exe (PID: 3208)
      • JavaUpdater.exe (PID: 6180)

    • QUASAR has been detected (YARA)

      • JavaUpdater.exe (PID: 6180)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • Client-built.exe (PID: 3208)

    • Starts itself from another location

      • Client-built.exe (PID: 3208)

    • Connects to unusual port

      • JavaUpdater.exe (PID: 6180)

  • INFO

    • Reads the computer name

      • Client-built.exe (PID: 3208)
      • JavaUpdater.exe (PID: 6180)

    • Reads the machine GUID from the registry

      • Client-built.exe (PID: 3208)
      • JavaUpdater.exe (PID: 6180)

    • Reads Environment values

      • JavaUpdater.exe (PID: 6180)
      • Client-built.exe (PID: 3208)

    • Creates files or folders in the user directory

      • Client-built.exe (PID: 3208)

    • Checks supported languages

      • JavaUpdater.exe (PID: 6180)
      • Client-built.exe (PID: 3208)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

Quasar

(PID) Process(6180) JavaUpdater.exe
Version1.4.1
C2 (2)73.193.34.34:4782
Sub_DirSubDir
Install_NameJavaUpdater.exe
Mutex02ed8f6e-b4ab-48d4-b95b-fbefab7e770d
StartupJava Updater
Tagrat4
LogDirLogs
Signatureb9g8ZVHJ02jVQBlg5MR/iIFp+8EEbgLKM8VzHSBLknznsp708byJ3kOi9kpXqNCj7I6mpVQekf9nEONBaLj2+Fyca/R4baSooFrPhVeeArWJi0qwZnOJfNcd9mXLhB8bKJgguU2Nmd/UPM2+HP8lR7CrdGjAmgPNNZPTUuKCPnqr5oRJWidnNmrOkg9umf1LapnFEBQwlj7ELbWwSwmo3U60XRsR66niwWUXYNjUVdPYmiVT+VPXTPAbW7aC4zfvehHVmSd2JvhPLUGyK7ocljq27YivCSDquYCwy06ZNje1...
CertificateMIIE9DCCAtygAwIBAgIQAPR69zUy374PjJagM+NuOzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MDQwODA2MzExOVoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzU89X173oIoMRcl8ZdN6AhkQ+oResz6sijeIobTMXqkSo11Ys7/DbJJoVzYn1Bm/QzI//5Id...
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

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2023:03:12 16:16:39+00:00
ImageFileCharacteristics: Executable, 32-bit
PEType: PE32
LinkerVersion: 8
CodeSize: 3261440
InitializedDataSize: 7680
UninitializedDataSize: -
EntryPoint: 0x31e3ee
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 1.1.7.9
ProductVersionNumber: 1.1.7.9
FileFlagsMask: 0x003f
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Neutral
CharacterSet: Unicode
Comments: -
CompanyName: Microsoft
FileDescription: StartUp
FileVersion: 1.1.7.9
InternalName: Windows 2024
LegalCopyright: Microsoft 2024
LegalTrademarks: -
OriginalFileName: Windows 2024
ProductName: WinUpdater
ProductVersion: 1.1.7.9
AssemblyVersion: 1.1.7.9
No data.
screenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
113
Monitored processes
3
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start client-built.exe #QUASAR javaupdater.exe filecoauth.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2568C:\Users\admin\AppData\Local\Microsoft\OneDrive\19.043.0304.0013\FileCoAuth.exe -EmbeddingC:\Users\admin\AppData\Local\Microsoft\OneDrive\19.043.0304.0013\FileCoAuth.exe—svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft OneDriveFile Co-Authoring Executable
Exit code:
0
Version:
19.043.0304.0013
Modules
Images
c:\users\admin\appdata\local\microsoft\onedrive\19.043.0304.0013\filecoauth.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\user32.dll
c:\windows\syswow64\win32u.dll
3208"C:\Users\admin\Desktop\Client-built.exe" C:\Users\admin\Desktop\Client-built.exe
explorer.exe
User:
admin
Company:
Microsoft
Integrity Level:
MEDIUM
Description:
StartUp
Exit code:
3
Version:
1.1.7.9
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
6180"C:\Users\admin\AppData\Roaming\SubDir\JavaUpdater.exe"C:\Users\admin\AppData\Roaming\SubDir\JavaUpdater.exe
Client-built.exe
User:
admin
Company:
Microsoft
Integrity Level:
MEDIUM
Description:
StartUp
Version:
1.1.7.9
Modules
Images
c:\users\admin\appdata\roaming\subdir\javaupdater.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(6180) JavaUpdater.exe
Version1.4.1
C2 (2)73.193.34.34:4782
Sub_DirSubDir
Install_NameJavaUpdater.exe
Mutex02ed8f6e-b4ab-48d4-b95b-fbefab7e770d
StartupJava Updater
Tagrat4
LogDirLogs
Signatureb9g8ZVHJ02jVQBlg5MR/iIFp+8EEbgLKM8VzHSBLknznsp708byJ3kOi9kpXqNCj7I6mpVQekf9nEONBaLj2+Fyca/R4baSooFrPhVeeArWJi0qwZnOJfNcd9mXLhB8bKJgguU2Nmd/UPM2+HP8lR7CrdGjAmgPNNZPTUuKCPnqr5oRJWidnNmrOkg9umf1LapnFEBQwlj7ELbWwSwmo3U60XRsR66niwWUXYNjUVdPYmiVT+VPXTPAbW7aC4zfvehHVmSd2JvhPLUGyK7ocljq27YivCSDquYCwy06ZNje1...
CertificateMIIE9DCCAtygAwIBAgIQAPR69zUy374PjJagM+NuOzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MDQwODA2MzExOVoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzU89X173oIoMRcl8ZdN6AhkQ+oResz6sijeIobTMXqkSo11Ys7/DbJJoVzYn1Bm/QzI//5Id...
Total events
1 065
Read events
1 063
Write events
2
Delete events
0

Modification events

(PID) Process:(3208) Client-built.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Java Updater
Value:
"C:\Users\admin\AppData\Roaming\SubDir\JavaUpdater.exe"
(PID) Process:(6180) JavaUpdater.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Java Updater
Value:
"C:\Users\admin\AppData\Roaming\SubDir\JavaUpdater.exe"
Executable files
1
Suspicious files
2
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
3208Client-built.exeC:\Users\admin\AppData\Roaming\SubDir\JavaUpdater.exeexecutable
MD5:—
SHA256:—
2568FileCoAuth.exeC:\Users\admin\AppData\Local\Microsoft\OneDrive\logs\Common\FileCoAuth-2024-04-15.1653.2568.1.aodlbinary
MD5:—
SHA256:—
2568FileCoAuth.exeC:\Users\admin\AppData\Local\Microsoft\OneDrive\logs\Common\FileCoAuth-2024-04-15.1653.2568.1.odlbinary
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
8
TCP/UDP connections
16
DNS requests
2
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2980
svchost.exe
GET
200
72.246.169.155:80
http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.1.crl
unknown
—
—
unknown
2980
svchost.exe
GET
200
72.246.169.155:80
http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.2.crl
unknown
—
—
unknown
2980
svchost.exe
GET
200
72.246.169.155:80
http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.3.crl
unknown
—
—
unknown
2980
svchost.exe
GET
200
72.246.169.155:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
—
—
unknown
2980
svchost.exe
GET
200
72.246.169.155:80
http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl
unknown
—
—
unknown
2980
svchost.exe
GET
200
72.246.169.155:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
unknown
2980
svchost.exe
GET
200
2.16.164.81:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut_2010-06-23.crl
unknown
—
—
unknown
2980
svchost.exe
GET
200
2.16.164.81:80
http://crl.microsoft.com/pki/crl/products/MicCodSigPCA_2010-07-06.crl
unknown
—
—
unknown
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
—
—
51.124.78.146:443
—
MICROSOFT-CORP-MSN-AS-BLOCK
NL
unknown
6180
JavaUpdater.exe
73.193.34.34:4782
—
COMCAST-7922
US
unknown
4
System
192.168.100.255:138
—
—
—
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
2980
svchost.exe
72.246.169.155:80
www.microsoft.com
AKAMAI-AS
DE
unknown
2980
svchost.exe
2.16.164.81:80
crl.microsoft.com
Akamai International B.V.
NL
unknown

DNS requests

Domain
IP
Reputation
www.microsoft.com
  • 72.246.169.155
whitelisted
crl.microsoft.com
  • 2.16.164.81
  • 2.16.164.73
  • 2.16.164.34
  • 2.16.164.107
  • 2.16.164.32
  • 2.16.164.18
  • 2.16.164.89
  • 2.16.164.99
  • 2.16.164.114
whitelisted

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
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Reports
Client-built.exe