Analysis Overview
Threat Level: Known bad
The file https://gofile.io/d/uKWr1e was found to be: Known bad.
Malicious Activity Summary
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
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-04 21:24
Signatures
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
Signatures
Quasar RAT
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
| 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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1884 wrote to memory of 3268 | N/A | C:\Users\Admin\Downloads\Client-built.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1884 wrote to memory of 3268 | N/A | C:\Users\Admin\Downloads\Client-built.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1884 wrote to memory of 1320 | N/A | C:\Users\Admin\Downloads\Client-built.exe | C:\Windows\system32\Windows\amdlogum.exe |
| PID 1884 wrote to memory of 1320 | N/A | C:\Users\Admin\Downloads\Client-built.exe | C:\Windows\system32\Windows\amdlogum.exe |
| PID 1320 wrote to memory of 428 | N/A | C:\Windows\system32\Windows\amdlogum.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1320 wrote to memory of 428 | N/A | C:\Windows\system32\Windows\amdlogum.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
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