Malware Analysis Report

2025-08-05 15:53

Sample ID 240529-skshqaab4t
Target 6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4
SHA256 6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4
Tags
upx
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4

Threat Level: Shows suspicious behavior

The file 6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4 was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx

Loads dropped DLL

UPX packed file

ACProtect 1.3x - 1.4x DLL software

Drops file in Program Files directory

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-29 15:11

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-29 15:11

Reported

2024-05-29 15:14

Platform

win7-20240221-en

Max time kernel

141s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4.dll,#1

Signatures

ACProtect 1.3x - 1.4x DLL software

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\System\symsrv.dll C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2928 -s 340

Network

N/A

Files

memory/2928-4-0x0000000010000000-0x0000000010030000-memory.dmp

\Program Files\Common Files\System\symsrv.dll

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2928-1-0x0000000074582000-0x0000000074583000-memory.dmp

memory/2928-7-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2928-6-0x0000000074580000-0x0000000074592000-memory.dmp

memory/2928-10-0x0000000074582000-0x0000000074583000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-29 15:11

Reported

2024-05-29 15:13

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4.dll,#1

Signatures

ACProtect 1.3x - 1.4x DLL software

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\System\symsrv.dll C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 900 wrote to memory of 3252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 900 wrote to memory of 3252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 900 wrote to memory of 3252 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6872e0e16c656c1624863392d18286992aa7fd6605d6a97c677bcf0fba4a88b4.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3252 -ip 3252

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3252 -s 712

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
NL 23.62.61.113:443 www.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 113.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 30.73.42.20.in-addr.arpa udp

Files

C:\Program Files\Common Files\System\symsrv.dll

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/3252-4-0x00000000753C2000-0x00000000753C3000-memory.dmp

memory/3252-5-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3252-7-0x00000000753C0000-0x00000000753D2000-memory.dmp

memory/3252-9-0x0000000010000000-0x0000000010030000-memory.dmp