Malware Analysis Report

2024-12-07 16:52

Sample ID 241113-hjaw6sxell
Target 581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.exe
SHA256 581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390e
Tags
upx defense_evasion discovery persistence
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

581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390e

Threat Level: Shows suspicious behavior

The file 581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx defense_evasion discovery persistence

Executes dropped EXE

Deletes itself

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Indicator Removal: File Deletion

UPX packed file

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 06:45

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 06:45

Reported

2024-11-13 06:47

Platform

win7-20240903-en

Max time kernel

30s

Max time network

23s

Command Line

"C:\Users\Admin\AppData\Local\Temp\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.exe

"C:\Users\Admin\AppData\Local\Temp\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp

Files

memory/2316-0-0x0000000001280000-0x00000000012A8000-memory.dmp

\ProgramData\Update\wuauclt.exe

MD5 4a61ce186136455ec2f204db100ee699
SHA1 8d3b9a4dab75585cf548c98b66f11589a066bcf9
SHA256 f46a3eb0a3f5a0c40984cd64c006ef49809b9c121fabb058a9b49039d6501ae5
SHA512 988f293c875d57a5dd678a9e5b62b9d636e8f7b1fe6af9ccb1a90e931adcb0110030051b81a0f3b0eed08eba312c1ebf52c831382065efa03de9d9a8f1a5c64e

memory/2316-4-0x00000000000C0000-0x00000000000E8000-memory.dmp

memory/2316-7-0x0000000001280000-0x00000000012A8000-memory.dmp

memory/2696-8-0x0000000001310000-0x0000000001338000-memory.dmp

memory/2316-9-0x0000000001280000-0x00000000012A8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 06:45

Reported

2024-11-13 06:47

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.exe

"C:\Users\Admin\AppData\Local\Temp\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.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\581a5da18e77e9628dabe056ba4e854f7b4a96125f27091f009c31298cb1390eN.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.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 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 67.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4168-0-0x0000000000140000-0x0000000000168000-memory.dmp

C:\ProgramData\Update\wuauclt.exe

MD5 962c8d656619336bd95c138375d0df51
SHA1 1d7740bdc1778090b1b5fe542e0b6c32678a2627
SHA256 ba92a2f511bfdce39125b6d06734384b204854600f9c3ba21bdf52f63e6942a2
SHA512 1abc60962653f49c6726d05fb47492dafbed09bbce6702ad1a5ec7096c958a12a22d3c64fbe8f26376d7ed7ccc140106dfea3b560f99de6601b29a0fe2131591

memory/4200-4-0x0000000000B90000-0x0000000000BB8000-memory.dmp

memory/4168-6-0x0000000000140000-0x0000000000168000-memory.dmp

memory/4200-7-0x0000000000B90000-0x0000000000BB8000-memory.dmp

memory/4168-8-0x0000000000140000-0x0000000000168000-memory.dmp