Malware Analysis Report

2025-08-05 21:21

Sample ID 240305-e39m3aec3y
Target b3c826c8e7de52b473258d54d67b528e
SHA256 5ec3a4f34c759cc44406d8402bcb640667c80da262e6811ff95402e2b48a0458
Tags
aspackv2 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

5ec3a4f34c759cc44406d8402bcb640667c80da262e6811ff95402e2b48a0458

Threat Level: Shows suspicious behavior

The file b3c826c8e7de52b473258d54d67b528e was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 upx

ASPack v2.12-2.42

Loads dropped DLL

UPX packed file

Executes dropped EXE

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-05 04:29

Signatures

ASPack v2.12-2.42

aspackv2
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

2024-03-05 04:29

Reported

2024-03-05 04:31

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b3c826c8e7de52b473258d54d67b528e.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\A2157-tmp.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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\b3c826c8e7de52b473258d54d67b528e.exe

"C:\Users\Admin\AppData\Local\Temp\b3c826c8e7de52b473258d54d67b528e.exe"

C:\Users\Admin\AppData\Local\Temp\A2157-tmp.eXe

"C:\Users\Admin\AppData\Local\Temp\A2157-tmp.eXe" http://downgosoft.com/drv32.data "C:\Users\Admin\AppData\Local\Temp\A2157-tmpa"

Network

Country Destination Domain Proto
US 8.8.8.8:53 downgosoft.com udp

Files

C:\Users\Admin\AppData\Local\Temp\A2157-tmp.exe

MD5 a6ef8e1067dae3cf7537712443bf3b77
SHA1 204b8a6402b415533540d0c2659c5722a21da8be
SHA256 2917964e199063cb0cd0bced5d1f7846edcb810fe02fff8f0b1dd053746cf229
SHA512 9662f18208b8a6c27a29e496b75d24ef9a910c20cd458fe8ea58458986253d3ff0a82e349cbfa804b52b3dd0913d995e737f740f48f1a16b8d2ff908ee9cc14a

memory/1640-8-0x0000000002CF0000-0x0000000002D14000-memory.dmp

memory/1640-15-0x0000000002D00000-0x0000000002D24000-memory.dmp

memory/1984-17-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1640-18-0x0000000000400000-0x0000000000436000-memory.dmp

memory/1984-19-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1640-20-0x0000000002CF0000-0x0000000002D14000-memory.dmp

memory/1640-21-0x0000000002D00000-0x0000000002D24000-memory.dmp

memory/1640-24-0x0000000002D00000-0x0000000002D24000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-05 04:29

Reported

2024-03-05 04:31

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b3c826c8e7de52b473258d54d67b528e.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\b3c826c8e7de52b473258d54d67b528e.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\A3A2B-tmp.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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\b3c826c8e7de52b473258d54d67b528e.exe

"C:\Users\Admin\AppData\Local\Temp\b3c826c8e7de52b473258d54d67b528e.exe"

C:\Users\Admin\AppData\Local\Temp\A3A2B-tmp.eXe

"C:\Users\Admin\AppData\Local\Temp\A3A2B-tmp.eXe" http://downgosoft.com/drv32.data "C:\Users\Admin\AppData\Local\Temp\A3A2B-tmpa"

Network

Country Destination Domain Proto
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com 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 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 downgosoft.com udp
US 8.8.8.8:53 udp

Files

C:\Users\Admin\AppData\Local\Temp\A3A2B-tmp

MD5 a6ef8e1067dae3cf7537712443bf3b77
SHA1 204b8a6402b415533540d0c2659c5722a21da8be
SHA256 2917964e199063cb0cd0bced5d1f7846edcb810fe02fff8f0b1dd053746cf229
SHA512 9662f18208b8a6c27a29e496b75d24ef9a910c20cd458fe8ea58458986253d3ff0a82e349cbfa804b52b3dd0913d995e737f740f48f1a16b8d2ff908ee9cc14a

memory/2200-11-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3044-13-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2200-14-0x0000000000400000-0x0000000000424000-memory.dmp