Malware Analysis Report

2024-12-07 16:48

Sample ID 241113-kyppzsyjfs
Target 9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe
SHA256 9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5
Tags
defense_evasion discovery persistence upx
score
7/10

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
7/10

SHA256

9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5

Threat Level: Shows suspicious behavior

The file 9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

defense_evasion discovery persistence upx

Checks computer location settings

Deletes itself

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Indicator Removal: File Deletion

UPX packed file

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 09:00

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 09:00

Reported

2024-11-13 09:02

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Update\wuauclt.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe N/A

Indicator Removal: File Deletion

defense_evasion

UPX packed file

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

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\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\Update\wuauclt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\windows\SysWOW64\cmd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe

"C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe"

C:\ProgramData\Update\wuauclt.exe

"C:\ProgramData\Update\wuauclt.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp

Files

memory/2664-1-0x00000000008E0000-0x0000000000908000-memory.dmp

\ProgramData\Update\wuauclt.exe

MD5 05aae259bf250c08ddab508fc54dd84c
SHA1 069b27e9986263d1a7afcee91b370f05a892dc4d
SHA256 953eb5e56a2fed16f5c6b7076184d5ed540feea65b3d8f755f5eaaf37eaae19a
SHA512 556e187443b98bf6c74b57378a6e8051739cfb4cc08c0e0c4582a105fafa5c2cf3d3e9382d98e88977d76deaa524e8b7c759eae7c0d4c070418d111465963d32

memory/2664-4-0x0000000000190000-0x00000000001B8000-memory.dmp

memory/2412-7-0x0000000000A30000-0x0000000000A58000-memory.dmp

memory/2664-8-0x0000000000190000-0x00000000001B8000-memory.dmp

memory/2412-9-0x0000000000A30000-0x0000000000A58000-memory.dmp

memory/2664-10-0x00000000008E0000-0x0000000000908000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 09:00

Reported

2024-11-13 09:02

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Update\wuauclt.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe N/A

Indicator Removal: File Deletion

defense_evasion

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\Update\wuauclt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\windows\SysWOW64\cmd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe

"C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe"

C:\ProgramData\Update\wuauclt.exe

"C:\ProgramData\Update\wuauclt.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\9c5491ea4ee4bcea3f7b532ec8371af54c1b26fb36ac7d7aaf2fdbb02a98c0d5.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/3460-0-0x0000000000260000-0x0000000000288000-memory.dmp

C:\ProgramData\Update\wuauclt.exe

MD5 cc4fb23f5ddfeb83ad1d2e52caabffb5
SHA1 2edf96f89fc1c61fe56aee6bc63e47ec4edb2b56
SHA256 77686d649ccc2edba795b874a2ba4471fb924fc689de58df4f8430463aeb8fd3
SHA512 e6fc854bbd9850d13983cae875553e748709e9b8f66f76207c37bf4c62c5beaa1853621b68fd286d6f91de655a5ff20b5bc50d4419c2ba5f118751412e77648a

memory/3648-4-0x00000000003D0000-0x00000000003F8000-memory.dmp

memory/3460-6-0x0000000000260000-0x0000000000288000-memory.dmp

memory/3648-7-0x00000000003D0000-0x00000000003F8000-memory.dmp

memory/3460-8-0x0000000000260000-0x0000000000288000-memory.dmp