Automated Malware Analysis IOC Report for

Files

File Path

Type

Category

Malicious

PO454355 Pdf.exe

PE32+ executable (GUI) x86-64, for MS Windows

initial sample

Details

Filetype:	PE32+ executable (GUI) x86-64, for MS Windows
Entropy:	7.055430688577327
Filename:	PO454355 Pdf.exe
Filesize:	2404352
MD5:	2d8c7cd70698ef3b6d1a3e042de0a93a
SHA1:	c73700a78a391e61b9ca3535c8d26dde12035808
SHA256:	657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce
SHA512:	a1ddd9992088aa6488d15235bb8985ac366dbe0614636eb4522a66ce5d173477e53421e5d01b6a57df9eebf838b1362cc5222690cb0712079c21e0d4aa9c0ba1
SSDEEP:	49152:EF50a6aPVOFMx3SmroCZscivbS6mqxEWoKmqZJffp3vSsqPUxeaw1GnNOmyVS5ks:2roA7PqryV2
Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......'..Ec...c...c....v..j....v..n....v..M...j.D.m...(...h...c...n....w..k....w..b...c...b....w..$...pq..b...pq..b...Richc..........

Signature Hits	Behavior Group	Mitre Attack
Multi AV Scanner detection for submitted file	AV Detection
Allocates memory in foreign processes	HIPS / PFW / Operating System Protection Evasion
Injects a PE file into a foreign processes	HIPS / PFW / Operating System Protection Evasion	Access Token Manipulation Process Injection
Writes to foreign memory regions	HIPS / PFW / Operating System Protection Evasion
Allocates memory with a write watch (potentially for evading sandboxes)	Malware Analysis System Evasion	Virtualization/Sandbox Evasion
Compiles C# or VB.Net code	Data Obfuscation	Access Token Manipulation
Contains functionality to query CPU information (cpuid)	Language, Device and Operating System Detection	System Information Discovery
Contains functionality to query locales information (e.g. system language)	Language, Device and Operating System Detection	Access Token Manipulation
Creates a process in suspended mode (likely to inject code)	HIPS / PFW / Operating System Protection Evasion
Detected potential crypto function	System Summary	Access Token Manipulation Archive Collected Data Encrypted Channel
Found evasive API chain (date check)	Malware Analysis System Evasion	Native API Access Token Manipulation
Found inlined nop instructions (likely shell or obfuscated code)	Software Vulnerabilities
Found potential string decryption / allocating functions	System Summary	Deobfuscate/Decode Files or Information Obfuscated Files or Information
PE file contains sections with non-standard names	Data Obfuscation
Sample file is different than original file name gathered from version info	System Summary	Access Token Manipulation
PE file has section (not .text) which is very likely to contain packed code (zlib compression ratio < 0.011)	System Summary	Software Packing
Contains functionality to adjust token privileges (e.g. debug / backup)	System Summary	Access Token Manipulation
Contains functionality to query local / system time	Language, Device and Operating System Detection	Access Token Manipulation System Time Discovery
Contains functionality to query system information	Malware Analysis System Evasion
Contains functionality to register its own exception handler	Anti Debugging
Parts of this applications are using the .NET runtime (Probably coded in C#)	System Summary
Reads software policies	System Summary	Access Token Manipulation
Sample is known by Antivirus	System Summary	Access Token Manipulation
Sample reads its own file content	System Summary	Access Token Manipulation
Tries to load missing DLLs	System Summary	DLL Side-Loading
PE file contains a valid data directory to section mapping	System Summary
PE file contains a debug data directory	System Summary
Contains modern PE file flags such as dynamic base (ASLR) or NX	Compliance, System Summary
PE file contains a mix of data directories often seen in goodware	System Summary
PE file has a high image base, often used for DLLs	System Summary
Submission file is bigger than most known malware samples	System Summary

C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_bad_module_info_dcd3242e9fa4189184df4216daa4e4c7cdf1959_85207d7d_ce89fc30-2665-47d9-b3d6-2c5173e453ca\Report.wer

Unicode text, UTF-16, little-endian text, with CRLF line terminators

dropped

Details

File:	C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_bad_module_info_dcd3242e9fa4189184df4216daa4e4c7cdf1959_85207d7d_ce89fc30-2665-47d9-b3d6-2c5173e453ca\Report.wer
Category:	dropped
Dump:	Report.wer.6.dr
ID:	dr_3
Target ID:	6
Process:	C:\Windows\SysWOW64\WerFault.exe
Type:	Unicode text, UTF-16, little-endian text, with CRLF line terminators
Entropy:	0.5800896353847202
Encrypted:	false
Ssdeep:	96:OaFN19bsQhMov7JYqQXIDcQ4c6fcE+cw3tZAX/d5FMT2SlPkpXmTAhf/VXT5NHBg:dH19bk0WbkQzuiFJZ24IO8b
Size:	65536
Whitelisted:	false
Reputation:	low

C:\ProgramData\Microsoft\Windows\WER\Temp\WER258B.tmp.WERInternalMetadata.xml

XML 1.0 document, Unicode text, UTF-16, little-endian text, with CRLF line terminators

dropped

Details

File:	C:\ProgramData\Microsoft\Windows\WER\Temp\WER258B.tmp.WERInternalMetadata.xml
Category:	dropped
Dump:	WER258B.tmp.WERInternalMetadata.xml.6.dr
ID:	dr_1
Target ID:	6
Process:	C:\Windows\SysWOW64\WerFault.exe
Type:	XML 1.0 document, Unicode text, UTF-16, little-endian text, with CRLF line terminators
Entropy:	3.695815268918576
Encrypted:	false
Ssdeep:	96:RSIU6o7wVetbW4O6OYR+V+Cbt5aMeUKq89bAxJsfayhm:R6l7wVeJW4O6OYUppxx89bAxJsfayhm
Size:	6244
Whitelisted:	false
Reputation:	low

C:\ProgramData\Microsoft\Windows\WER\Temp\WER2618.tmp.xml

XML 1.0 document, ASCII text, with CRLF line terminators

dropped

Details

File:	C:\ProgramData\Microsoft\Windows\WER\Temp\WER2618.tmp.xml
Category:	dropped
Dump:	WER2618.tmp.xml.6.dr
ID:	dr_2
Target ID:	6
Process:	C:\Windows\SysWOW64\WerFault.exe
Type:	XML 1.0 document, ASCII text, with CRLF line terminators
Entropy:	4.42183870608659
Encrypted:	false
Ssdeep:	48:cvIwWl8zs4iJg77aI9aVWpW8VY0Ym8M4JTHF2+q87YdH3oz9d:uIjf4wI7Uk7VwJYzdH3W9d
Size:	4564
Whitelisted:	false
Reputation:	low

C:\Users\user\AppData\Local\Temp\WER15BB.tmp.WERDataCollectionStatus.txt

Unicode text, UTF-16, little-endian text, with CRLF line terminators

dropped

Details

File:	C:\Users\user\AppData\Local\Temp\WER15BB.tmp.WERDataCollectionStatus.txt
Category:	dropped
Dump:	WER15BB.tmp.WERDataCollectionStatus.txt.6.dr
ID:	dr_0
Target ID:	6
Process:	C:\Windows\SysWOW64\WerFault.exe
Type:	Unicode text, UTF-16, little-endian text, with CRLF line terminators
Entropy:	3.2428824725333505
Encrypted:	false
Ssdeep:	96:pwpIitkXkkX5kuguWL0Qg0QF0Qge0QXs0Qi0QQTHgmXQcszeuzSzbxGQI5/msspJ:pglY+uIYyoeyOkNe
Size:	4744
Whitelisted:	false
Reputation:	low

C:\Windows\appcompat\Programs\Amcache.hve

MS Windows registry file, NT/2000 or above

dropped

Details

File:	C:\Windows\appcompat\Programs\Amcache.hve
Category:	dropped
Dump:	Amcache.hve.6.dr
ID:	dr_4
Target ID:	6
Process:	C:\Windows\SysWOW64\WerFault.exe
Type:	MS Windows registry file, NT/2000 or above
Entropy:	4.469257901838899
Encrypted:	false
Ssdeep:	6144:NzZfpi6ceLPx9skLmb0f6ZWSP3aJG8nAgeiJRMMhA2zX4WABluuNrjDH5S:FZHt6ZWOKnMM6bFpdj4
Size:	1835008
Whitelisted:	false
Reputation:	low

Processes

Path

Cmdline

Malicious

C:\Users\user\Desktop\PO454355 Pdf.exe

"C:\Users\user\Desktop\PO454355 Pdf.exe"

Details

Is windows:	false
Is dropped:	false
PID:	5072
Target ID:	0
Parent PID:	4004
Name:	PO454355 Pdf.exe
Path:	C:\Users\user\Desktop\PO454355 Pdf.exe
Commandline:	"C:\Users\user\Desktop\PO454355 Pdf.exe"
Size:	2404352
MD5:	2D8C7CD70698EF3B6D1A3E042DE0A93A
Time:	09:57:52
Date:	02/07/2024
Reason:	newprocess
Reputation:	low
Is admin:	true
Is elevated:	true
Modulebase:	0x7ff6e8d20000
Modulesize:	2785280
Wow64:	false

Signature Hits	Behavior Group	Mitre Attack
Multi AV Scanner detection for submitted file	AV Detection
PE file contains sections with non-standard names	Data Obfuscation
Sample file is different than original file name gathered from version info	System Summary
PE file has section (not .text) which is very likely to contain packed code (zlib compression ratio < 0.011)	System Summary	Software Packing
May try to detect the virtual machine to hinder analysis (VM artifact strings found in memory)	Malware Analysis System Evasion	Security Software Discovery
Parts of this applications are using the .NET runtime (Probably coded in C#)	System Summary
Sample is known by Antivirus	System Summary
Sample reads its own file content	System Summary
Spawns processes	System Summary	Process Injection
URLs found in memory or binary data	Networking
PE file contains a valid data directory to section mapping	System Summary
PE file contains a debug data directory	System Summary
Contains modern PE file flags such as dynamic base (ASLR) or NX	Compliance, System Summary
PE file contains a mix of data directories often seen in goodware	System Summary
PE file has a high image base, often used for DLLs	System Summary
Submission file is bigger than most known malware samples	System Summary

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"

Details

Is windows:	true
Is dropped:	false
PID:	4932
Target ID:	3
Parent PID:	5072
Name:	csc.exe
Class:	system-tools
Path:	C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
Commandline:	"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
Size:	2141552
MD5:	EB80BB1CA9B9C7F516FF69AFCFD75B7D
Time:	09:57:53
Date:	02/07/2024
Reason:	newprocess
Reputation:	moderate
Is admin:	true
Is elevated:	true
Modulebase:	0x390000
Modulesize:	0
Wow64:	false

Signature Hits	Behavior Group	Mitre Attack
Allocates memory in foreign processes	HIPS / PFW / Operating System Protection Evasion	Process Injection
Injects a PE file into a foreign processes	HIPS / PFW / Operating System Protection Evasion	Process Injection
Writes to foreign memory regions	HIPS / PFW / Operating System Protection Evasion	Process Injection
Compiles C# or VB.Net code	Data Obfuscation
Creates a process in suspended mode (likely to inject code)	HIPS / PFW / Operating System Protection Evasion	Process Injection
Spawns processes	System Summary	Process Injection

C:\Windows\System32\conhost.exe

C:\Windows\system32\conhost.exe 0xffffffff -ForceV1

Details

Is windows:	true
Is dropped:	false
PID:	4980
Target ID:	2
Parent PID:	5072
Name:	conhost.exe
Path:	C:\Windows\System32\conhost.exe
Commandline:	C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Size:	862208
MD5:	0D698AF330FD17BEE3BF90011D49251D
Time:	09:57:53
Date:	02/07/2024
Reason:	newprocess
Reputation:	high
Is admin:	true
Is elevated:	true
Modulebase:	0x7ff66e660000
Modulesize:	892928
Wow64:	false

Signature Hits	Behavior Group	Mitre Attack
Spawns processes	System Summary	Process Injection

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 20

Details

Is windows:	true
Is dropped:	false
PID:	1588
Target ID:	6
Parent PID:	4932
Name:	WerFault.exe
Path:	C:\Windows\SysWOW64\WerFault.exe
Commandline:	C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 20
Size:	483680
MD5:	C31336C1EFC2CCB44B4326EA793040F2
Time:	09:57:54
Date:	02/07/2024
Reason:	newprocess
Reputation:	high
Is admin:	true
Is elevated:	true
Modulebase:	0x870000
Modulesize:	499712
Wow64:	true

Signature Hits	Behavior Group	Mitre Attack
One or more processes crash	System Summary
Spawns processes	System Summary	Process Injection

URLs

Name

Malicious

http://upx.sf.net

unknown

https://aka.ms/GlobalizationInvariantMode

unknown

https://aka.ms/nativeaot-c

unknown

https://aka.ms/nativeaot-compatibility

unknown

https://aka.ms/nativeaot-compatibilityY

unknown

https://aka.ms/nativeaot-compatibilityy

unknown

Domains

Name

Malicious

15.164.165.52.in-addr.arpa

unknown