Malware Analysis Report

2024-10-23 21:24

Sample ID 240804-z86htawglj
Target https://gofile.io/d/uKWr1e
Tags
quasar office04 spyware trojan
score
10/10

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
10/10

Threat Level: Known bad

The file https://gofile.io/d/uKWr1e was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar RAT

Quasar payload

Executes dropped EXE

Drops file in System32 directory

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-04 21:24

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-04 21:24

Reported

2024-08-04 21:25

Platform

win10v2004-20240802-en

Max time kernel

65s

Max time network

69s

Command Line

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://gofile.io/d/uKWr1e

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\system32\Windows\amdlogum.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\Windows C:\Windows\system32\Windows\amdlogum.exe N/A
File created C:\Windows\system32\Windows\amdlogum.exe C:\Users\Admin\Downloads\Client-built.exe N/A
File opened for modification C:\Windows\system32\Windows\amdlogum.exe C:\Users\Admin\Downloads\Client-built.exe N/A
File opened for modification C:\Windows\system32\Windows C:\Users\Admin\Downloads\Client-built.exe N/A
File opened for modification C:\Windows\system32\Windows\amdlogum.exe C:\Windows\system32\Windows\amdlogum.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\Downloads\Client-built.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\Windows\amdlogum.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Downloads\Client-built.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Downloads\Client-built.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\Windows\amdlogum.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://gofile.io/d/uKWr1e

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=16 --field-trial-handle=3748,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=3804 /prefetch:1

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=15 --field-trial-handle=3992,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4088 /prefetch:1

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 --field-trial-handle=5352,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5360 /prefetch:8

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=entity_extraction_service.mojom.Extractor --lang=en-US --service-sandbox-type=entity_extraction --onnx-enabled-for-ee --field-trial-handle=5368,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5412 /prefetch:8

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=19 --field-trial-handle=5804,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5848 /prefetch:1

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --field-trial-handle=5240,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5844 /prefetch:8

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=21 --field-trial-handle=5992,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5264 /prefetch:1

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --lang=en-US --service-sandbox-type=collections --field-trial-handle=6204,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5916 /prefetch:8

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=23 --field-trial-handle=5856,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5728 /prefetch:1

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --field-trial-handle=6744,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=6376 /prefetch:8

C:\Users\Admin\Downloads\Client-built.exe

"C:\Users\Admin\Downloads\Client-built.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Update.exe" /sc ONLOGON /tr "C:\Windows\system32\Windows\amdlogum.exe" /rl HIGHEST /f

C:\Windows\system32\Windows\amdlogum.exe

"C:\Windows\system32\Windows\amdlogum.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Update.exe" /sc ONLOGON /tr "C:\Windows\system32\Windows\amdlogum.exe" /rl HIGHEST /f

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Users\Admin\Downloads\Client-built.exe

"C:\Users\Admin\Downloads\Client-built.exe"

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

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_search_indexer.mojom.SearchIndexerInterfaceBroker --lang=en-US --service-sandbox-type=search_indexer --message-loop-type-ui --field-trial-handle=5528,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=5636 /prefetch:8

C:\Users\Admin\Downloads\Client-built.exe

"C:\Users\Admin\Downloads\Client-built.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gofile.io udp
US 8.8.8.8:53 gofile.io udp
US 8.8.8.8:53 gofile.io udp
FR 45.112.123.126:443 gofile.io tcp
FR 45.112.123.126:443 gofile.io tcp
US 8.8.8.8:53 business.bing.com udp
US 8.8.8.8:53 business.bing.com udp
FR 45.112.123.126:443 gofile.io tcp
US 8.8.8.8:53 126.123.112.45.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 gofile.io udp
US 8.8.8.8:53 business.bing.com udp
US 8.8.8.8:53 business.bing.com udp
FR 45.112.123.126:443 gofile.io udp
US 13.107.6.158:443 business.bing.com tcp
US 8.8.8.8:53 bzib.nelreports.net udp
US 8.8.8.8:53 bzib.nelreports.net udp
GB 92.123.142.200:443 bzib.nelreports.net tcp
US 8.8.8.8:53 nav-edge.smartscreen.microsoft.com udp
US 8.8.8.8:53 nav-edge.smartscreen.microsoft.com udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 200.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 20.58.20.217.in-addr.arpa udp
GB 184.28.176.82:443 www.bing.com udp
US 8.8.8.8:53 api.gofile.io udp
US 8.8.8.8:53 api.gofile.io udp
US 8.8.8.8:53 nav-edge.smartscreen.microsoft.com udp
GB 13.87.96.169:443 nav-edge.smartscreen.microsoft.com tcp
US 8.8.8.8:53 82.176.28.184.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 api.gofile.io udp
US 8.8.8.8:53 api.gofile.io udp
FR 51.38.43.18:443 api.gofile.io tcp
US 8.8.8.8:53 data-edge.smartscreen.microsoft.com udp
US 8.8.8.8:53 data-edge.smartscreen.microsoft.com udp
GB 172.165.61.93:443 data-edge.smartscreen.microsoft.com tcp
FR 51.38.43.18:443 api.gofile.io udp
N/A 224.0.0.251:5353 udp
US 8.8.8.8:53 s.gofile.io udp
US 8.8.8.8:53 s.gofile.io udp
FR 51.75.242.210:443 s.gofile.io tcp
FR 51.75.242.210:443 s.gofile.io tcp
US 8.8.8.8:53 18.43.38.51.in-addr.arpa udp
US 8.8.8.8:53 93.61.165.172.in-addr.arpa udp
US 8.8.8.8:53 210.242.75.51.in-addr.arpa udp
US 8.8.8.8:53 store4.gofile.io udp
US 8.8.8.8:53 store4.gofile.io udp
US 8.8.8.8:53 store4.gofile.io udp
US 8.8.8.8:53 gofile.io udp
FR 31.14.70.245:443 store4.gofile.io tcp
FR 31.14.70.245:443 store4.gofile.io tcp
US 8.8.8.8:53 dl-edge.smartscreen.microsoft.com udp
US 8.8.8.8:53 dl-edge.smartscreen.microsoft.com udp
US 8.8.8.8:53 app-edge.smartscreen.microsoft.com udp
US 8.8.8.8:53 app-edge.smartscreen.microsoft.com udp
GB 51.140.242.104:443 app-edge.smartscreen.microsoft.com tcp
US 8.8.8.8:53 245.70.14.31.in-addr.arpa udp
US 8.8.8.8:53 104.242.140.51.in-addr.arpa udp
N/A 192.168.1.81:4782 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
N/A 192.168.1.81:4782 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp

Files

memory/1884-0-0x00007FFDE8993000-0x00007FFDE8995000-memory.dmp

memory/1884-1-0x00000000003D0000-0x00000000006F4000-memory.dmp

memory/1884-2-0x00007FFDE8990000-0x00007FFDE9451000-memory.dmp

C:\Windows\System32\Windows\amdlogum.exe

MD5 83cac7369d8be73c15a2b91151607c89
SHA1 50393e07c333f9b9dc5881fddfdd07f546d7a185
SHA256 f786bbceb1e6b3c876a691ad37fe4a9b9d064bf5043109df7a3dc1e92b56535f
SHA512 8f267383b89be36c718f91a26c0d3a0522de0e0abc0be82794a90e6d278e22cf19978ccf2159af8f4283317c222386717fa10f454cbd421929ad7eefaa97beb4

memory/1884-9-0x00007FFDE8990000-0x00007FFDE9451000-memory.dmp

memory/1320-10-0x00007FFDE8990000-0x00007FFDE9451000-memory.dmp

memory/1320-11-0x00007FFDE8990000-0x00007FFDE9451000-memory.dmp

memory/1320-12-0x000000001BBB0000-0x000000001BC00000-memory.dmp

memory/1320-13-0x000000001BCC0000-0x000000001BD72000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client-built.exe.log

MD5 baf55b95da4a601229647f25dad12878
SHA1 abc16954ebfd213733c4493fc1910164d825cac8
SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
SHA512 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

memory/1320-15-0x00007FFDE8990000-0x00007FFDE9451000-memory.dmp