Malware Analysis Report

2025-03-14 22:31

Sample ID 240304-regzcsdb37
Target b2513ad2f69e95139b51cd2da8c09064
SHA256 8f72d46efcdeb6a82eade69cde0492916191d3802a38872c57be9d59009101a7
Tags
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

8f72d46efcdeb6a82eade69cde0492916191d3802a38872c57be9d59009101a7

Threat Level: Shows suspicious behavior

The file b2513ad2f69e95139b51cd2da8c09064 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Modifies registry key

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-04 14:06

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 14:06

Reported

2024-03-04 14:08

Platform

win7-20240221-en

Max time kernel

142s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctfmon = "\"C:\\Users\\Admin\\AppData\\Local\\usnscv.exe\"" C:\Windows\SysWOW64\reg.exe N/A

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\usnscv.exe

Modifies registry key

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1152 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe C:\Users\Admin\AppData\Local\usnscv.exe
PID 1152 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe C:\Users\Admin\AppData\Local\usnscv.exe
PID 1152 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe C:\Users\Admin\AppData\Local\usnscv.exe
PID 1152 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe C:\Users\Admin\AppData\Local\usnscv.exe
PID 1292 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\cmd.exe
PID 1292 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\cmd.exe
PID 1292 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\cmd.exe
PID 1292 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\cmd.exe
PID 1292 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\cmd.exe
PID 1292 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\cmd.exe
PID 1292 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\cmd.exe
PID 2868 wrote to memory of 2552 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 2868 wrote to memory of 2552 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 2868 wrote to memory of 2552 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 2868 wrote to memory of 2552 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\cmd.exe
PID 2552 wrote to memory of 2600 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2552 wrote to memory of 2600 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2552 wrote to memory of 2600 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2552 wrote to memory of 2600 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1292 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\WerFault.exe
PID 1292 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\WerFault.exe
PID 1292 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\WerFault.exe
PID 1292 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\usnscv.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe

"C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe"

C:\Users\Admin\AppData\Local\usnscv.exe

"C:\Users\Admin\AppData\Local\usnscv.exe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\winupdate.bat" "

C:\Windows\SysWOW64\cmd.exe

cmd /c REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V ctfmon /D "\"C:\Users\Admin\AppData\Local\usnscv.exe\"" /f

C:\Windows\SysWOW64\reg.exe

REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V ctfmon /D "\"C:\Users\Admin\AppData\Local\usnscv.exe\"" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1292 -s 600

Network

Country Destination Domain Proto
US 174.138.160.18:80 tcp

Files

memory/1152-0-0x0000000000220000-0x0000000000221000-memory.dmp

\Users\Admin\AppData\Local\usnscv.exe

MD5 027905218f9a0db3f92e33de4eb30b31
SHA1 da5e3fb607c31cf125ec9dd61b5504c845d5ca7a
SHA256 94b41ed321c207eeea31a86f606fcd26b26bb26a88bd81b761cdf27b0b90deea
SHA512 46f55d671a4d468b6ee61a5c4bf8465ca941342f95fed0f60636a535d259e83ee2d98a4fb673f9b95cf6ddb8bd61bbe9b72cf55c6f6e18201a39181b82b2743d

memory/1152-11-0x0000000004000000-0x0000000004110000-memory.dmp

memory/1292-14-0x0000000000020000-0x0000000000037000-memory.dmp

\Users\Admin\AppData\Local\sysinf.dll

MD5 ba190ef2c7ede61ef4459947f92689a7
SHA1 0972e154a52f86a8126b1f79575b888ab63e5b13
SHA256 d06c7c0f8810a75e92b2654a2f2b54d35b1a1cf8c92ea0ef1320630f1b736424
SHA512 e68efb700614476abfcd0e503f1a142ee8b8ba761bb1467f7c58e21fb38a1e00d4bb0005eb85f93d0845b9d3f2344e0d32c1c5cebfa79610649213162f646626

memory/1292-15-0x0000000000250000-0x0000000000251000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\winupdate.bat

MD5 6f893fa27049e87617787e4964ad5ecb
SHA1 2efa3418e797e4d5ced66044eff405cb2f93060c
SHA256 a9912cc06ab8465ecbf27c5b6887ba94421e213d1fff1467ee1d8f20a72f0b60
SHA512 08188fd11947612212701c3fffc253bb69530091115cf6c59650ed70851a8b56b5508cf458df9e742956144be1b3738560a33871a4be782798a63f04b7dae57f

memory/1292-25-0x0000000000400000-0x0000000000498000-memory.dmp

memory/1292-26-0x0000000000020000-0x0000000000037000-memory.dmp

memory/1292-33-0x0000000000400000-0x0000000000498000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 14:06

Reported

2024-03-04 14:08

Platform

win10v2004-20240226-en

Max time kernel

119s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\usnscv.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ctfmon = "\"C:\\Users\\Admin\\AppData\\Local\\usnscv.exe\"" C:\Windows\SysWOW64\reg.exe N/A

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\usnscv.exe

Modifies registry key

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\usnscv.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe

"C:\Users\Admin\AppData\Local\Temp\b2513ad2f69e95139b51cd2da8c09064.exe"

C:\Users\Admin\AppData\Local\usnscv.exe

"C:\Users\Admin\AppData\Local\usnscv.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\winupdate.bat" "

C:\Windows\SysWOW64\cmd.exe

cmd /c REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V ctfmon /D "\"C:\Users\Admin\AppData\Local\usnscv.exe\"" /f

C:\Windows\SysWOW64\reg.exe

REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V ctfmon /D "\"C:\Users\Admin\AppData\Local\usnscv.exe\"" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2384 -ip 2384

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 744

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4384 --field-trial-handle=2972,i,4036376905309803364,5412922217215781933,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 174.138.160.18:80 tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 172.217.169.42:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 42.169.217.172.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp

Files

memory/1912-0-0x00000000021A0000-0x00000000021A1000-memory.dmp

C:\Users\Admin\AppData\Local\usnscv.exe

MD5 027905218f9a0db3f92e33de4eb30b31
SHA1 da5e3fb607c31cf125ec9dd61b5504c845d5ca7a
SHA256 94b41ed321c207eeea31a86f606fcd26b26bb26a88bd81b761cdf27b0b90deea
SHA512 46f55d671a4d468b6ee61a5c4bf8465ca941342f95fed0f60636a535d259e83ee2d98a4fb673f9b95cf6ddb8bd61bbe9b72cf55c6f6e18201a39181b82b2743d

memory/1912-10-0x0000000004000000-0x0000000004110000-memory.dmp

C:\Users\Admin\AppData\Local\sysinf.dll

MD5 ba190ef2c7ede61ef4459947f92689a7
SHA1 0972e154a52f86a8126b1f79575b888ab63e5b13
SHA256 d06c7c0f8810a75e92b2654a2f2b54d35b1a1cf8c92ea0ef1320630f1b736424
SHA512 e68efb700614476abfcd0e503f1a142ee8b8ba761bb1467f7c58e21fb38a1e00d4bb0005eb85f93d0845b9d3f2344e0d32c1c5cebfa79610649213162f646626

memory/2384-14-0x00000000005E0000-0x00000000005F7000-memory.dmp

memory/2384-15-0x00000000006B0000-0x00000000006B1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\winupdate.bat

MD5 6f893fa27049e87617787e4964ad5ecb
SHA1 2efa3418e797e4d5ced66044eff405cb2f93060c
SHA256 a9912cc06ab8465ecbf27c5b6887ba94421e213d1fff1467ee1d8f20a72f0b60
SHA512 08188fd11947612212701c3fffc253bb69530091115cf6c59650ed70851a8b56b5508cf458df9e742956144be1b3738560a33871a4be782798a63f04b7dae57f

memory/2384-20-0x0000000000400000-0x0000000000498000-memory.dmp

memory/2384-21-0x00000000005E0000-0x00000000005F7000-memory.dmp

memory/2384-24-0x0000000000400000-0x0000000000498000-memory.dmp

memory/2384-25-0x00000000005E0000-0x00000000005F7000-memory.dmp