Malware Analysis Report

2025-03-14 22:29

Sample ID 240407-xwxn2acc89
Target update1503.zip
SHA256 516ca1c34949d486ab72f17515cfdad238b126a043dda0d3322f00510480ce69
Tags
collection persistence
score
6/10

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 Overview

score
6/10

SHA256

516ca1c34949d486ab72f17515cfdad238b126a043dda0d3322f00510480ce69

Threat Level: Shows suspicious behavior

The file update1503.zip was found to be: Shows suspicious behavior.

Malicious Activity Summary

collection persistence

Adds Run key to start application

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

outlook_office_path

outlook_win_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 19:12

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 19:12

Reported

2024-04-07 19:15

Platform

win10v2004-20240226-en

Max time kernel

130s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\update1503.exe"

Signatures

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.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\(7e89dc94745e89b44c0704984be4f377)update1503.exe = "C:\\Users\\Public\\Libraries\\(7e89dc94745e89b44c0704984be4f377)update1503.exe" C:\Users\Admin\AppData\Local\Temp\update1503.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ipinfo.io N/A N/A
N/A ipinfo.io N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3268 set thread context of 4168 N/A C:\Users\Admin\AppData\Local\Temp\update1503.exe C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\update1503.exe

"C:\Users\Admin\AppData\Local\Temp\update1503.exe"

C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe

C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3932 --field-trial-handle=2260,i,9938964625802268469,1928462186077019554,262144 --variations-seed-version /prefetch:3

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=3060 --field-trial-handle=2260,i,9938964625802268469,1928462186077019554,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
FI 95.216.41.236:50500 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 236.41.216.95.in-addr.arpa udp
US 8.8.8.8:53 ipinfo.io udp
US 34.117.186.192:443 ipinfo.io tcp
US 8.8.8.8:53 db-ip.com udp
US 172.67.75.166:443 db-ip.com tcp
US 8.8.8.8:53 192.186.117.34.in-addr.arpa udp
US 8.8.8.8:53 166.75.67.172.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
DE 142.250.186.42:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 42.186.250.142.in-addr.arpa udp
FI 95.216.41.236:50500 tcp

Files

memory/3268-5-0x00007FF6F6C20000-0x00007FF6F7E99000-memory.dmp

memory/4168-6-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-8-0x0000000001000000-0x0000000001152000-memory.dmp

memory/3268-7-0x00007FF6F6C20000-0x00007FF6F7E99000-memory.dmp

memory/4168-9-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-10-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-11-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-12-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-14-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-24-0x0000000001000000-0x0000000001152000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\heidilyNPDuF6RQK8\pVY3XktmXrtCWeb Data

MD5 fbe4c51ee21cb3ec2e3c7698c9f7bdb0
SHA1 22f78716f3ab309bb89a86dc7f2f4f71f05e5aae
SHA256 fd94eefb6e43f441bc8daafd21b51612016a8baecf93a088e91e4e3b6c0b36d0
SHA512 6185afbbb674c2dad6a737fff3e7283633595bb8aea200b1312a98967060f3e3bd93c2f51116ce5350de6d9abd78c0de8aeb31706b85e793e00e104a08353278

C:\Users\Admin\AppData\Local\Temp\heidilyNPDuF6RQK8\koao7n6ynQHUWeb Data

MD5 28667debbba3ba0039200b5694697077
SHA1 57592f97bc6702bcc0cb412e8eafdd6cd23e9431
SHA256 08b286c14b265432816d0a202daed16f15001178adfde3b9d03feda2e7cb02eb
SHA512 a6e00658a2be664f2af4aa7bf9851edafdefdbab086ebcd01cddd6a7ba65a7c9acbc764a9df46feb3d45e0e983185afdddea06abb6e4de574746f52f327e1e99

memory/4168-70-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-73-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-79-0x0000000001000000-0x0000000001152000-memory.dmp

memory/4168-78-0x0000000001000000-0x0000000001152000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\47c44012-f333-4f11-88fd-83228eceec24.tmp

MD5 d751713988987e9331980363e24189ce
SHA1 97d170e1550eee4afc0af065b78cda302a97674c
SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
SHA512 b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

memory/4168-94-0x0000000001000000-0x0000000001152000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries

MD5 20d4b8fa017a12a108c87f540836e250
SHA1 1ac617fac131262b6d3ce1f52f5907e31d5f6f00
SHA256 6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d
SHA512 507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

memory/4168-106-0x0000000001330000-0x0000000001331000-memory.dmp

memory/4168-107-0x0000000001290000-0x0000000001308000-memory.dmp

memory/4168-110-0x0000000001290000-0x0000000001308000-memory.dmp

memory/4168-111-0x0000000001000000-0x0000000001152000-memory.dmp