Analysis Overview
SHA256
8e81cad20a55301586d986a1d15c9e822f807453e1dec2e9a5c82af59167a8f7
Threat Level: Known bad
The file aimwhere_steam_module.exe was found to be: Known bad.
Malicious Activity Summary
Xworm family
Detect Xworm Payload
Xworm
Command and Scripting Interpreter: PowerShell
Looks up external IP address via web service
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Enumerates system info in registry
Modifies data under HKEY_USERS
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-30 10:50
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-30 10:50
Reported
2024-05-30 10:53
Platform
win11-20240426-en
Max time kernel
147s
Max time network
150s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Local\\Temp\\XClient.exe" | C:\Users\Admin\AppData\Local\Temp\aimwhere_steam_module.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Enumerates physical storage devices
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "133615398998654685" | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\aimwhere_steam_module.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\aimwhere_steam_module.exe
"C:\Users\Admin\AppData\Local\Temp\aimwhere_steam_module.exe"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\aimwhere_steam_module.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'aimwhere_steam_module.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=110.0.5481.104 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7fff97deab58,0x7fff97deab68,0x7fff97deab78
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1640 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:2
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2060 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=2200 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=3064 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:1
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3196 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:1
C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe"
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4232 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:1
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4488 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4508 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4524 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4524 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4844 --field-trial-handle=1828,i,6520576253263764881,16644704908089776818,131072 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| GB | 142.250.187.196:443 | www.google.com | tcp |
| US | 8.8.8.8:53 | 196.187.250.142.in-addr.arpa | udp |
| GB | 142.250.200.14:443 | apis.google.com | tcp |
| GB | 142.250.179.238:443 | play.google.com | tcp |
| N/A | 224.0.0.251:5353 | udp | |
| GB | 142.250.187.238:443 | clients2.google.com | tcp |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| US | 52.111.227.11:443 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp | |
| N/A | 127.0.0.1:4040 | tcp |
Files
memory/4532-0-0x00007FFF9C8F3000-0x00007FFF9C8F5000-memory.dmp
memory/4532-1-0x0000000000180000-0x000000000019A000-memory.dmp
memory/4532-2-0x00007FFF9C8F0000-0x00007FFF9D3B2000-memory.dmp
memory/436-3-0x00007FFF9C8F0000-0x00007FFF9D3B2000-memory.dmp
memory/436-4-0x00007FFF9C8F0000-0x00007FFF9D3B2000-memory.dmp
memory/436-10-0x0000013147790000-0x00000131477B2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mdmepwe2.h0u.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/436-14-0x00007FFF9C8F0000-0x00007FFF9D3B2000-memory.dmp
memory/436-17-0x00007FFF9C8F0000-0x00007FFF9D3B2000-memory.dmp
memory/436-18-0x00007FFF9C8F0000-0x00007FFF9D3B2000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | 627073ee3ca9676911bee35548eff2b8 |
| SHA1 | 4c4b68c65e2cab9864b51167d710aa29ebdcff2e |
| SHA256 | 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c |
| SHA512 | 3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 1a9fa92a4f2e2ec9e244d43a6a4f8fb9 |
| SHA1 | 9910190edfaccece1dfcc1d92e357772f5dae8f7 |
| SHA256 | 0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888 |
| SHA512 | 5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 781da0576417bf414dc558e5a315e2be |
| SHA1 | 215451c1e370be595f1c389f587efeaa93108b4c |
| SHA256 | 41a5aef8b0bbeea2766f40a7bba2c78322379f167c610f7055ccb69e7db030fe |
| SHA512 | 24e283aa30a2903ebe154dad49b26067a45e46fec57549ad080d3b9ec3f272044efaaed3822d067837f5521262192f466c47195ffe7f75f8c7c5dcf3159ea737 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 4093e5ab3812960039eba1a814c2ffb0 |
| SHA1 | b5e4a98a80be72fccd3cc910e93113d2febef298 |
| SHA256 | c0794e2b7036ce5612446a8b15e0c8387773bbc921f63cf8849f8a1f4ef3878c |
| SHA512 | f3555b45aa1a1dd5214716dc81a05905c4ecd5a3e1276d35e08c65623ab1d14d469b3b576a5d9638264c1222d73889d2cc1ee43fb579d9ca3fcddd9f557cac7b |
memory/4532-51-0x00007FFF9C8F0000-0x00007FFF9D3B2000-memory.dmp
\??\pipe\crashpad_3480_FISYVPTCDNVUQRQF
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
| MD5 | d751713988987e9331980363e24189ce |
| SHA1 | 97d170e1550eee4afc0af065b78cda302a97674c |
| SHA256 | 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945 |
| SHA512 | b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
| MD5 | 6ed82de635fc748328124c02d1a234d9 |
| SHA1 | b124efa6b88728b92adcb7308656a48d4eb3586b |
| SHA256 | de02f2f52286397c3c8b91c80b8130000a5fcdf0c16a2b20127507305d0a2a0e |
| SHA512 | f85d33c2209319750f8957041820e3803fa9d2915b6674b2262ae06c2fad89dd964965d521fef1e16008c62db9a834775649e73824c52c70ebbf2f6ea287209b |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
| MD5 | 1fd6dad259637654b4724e5fbc50440e |
| SHA1 | 9b1e6bdef6a6b967e979437bf8357d0dce1eb202 |
| SHA256 | 295039292be5d2364d3581c3c888d0a1f6df286887b656f4a98944ba80c972c5 |
| SHA512 | 73c8e93677eae86c0d91b32bb948318323e828eb42d99ccc2fc7079cae9a58e60aac798360f5f7139bc9803c80788d24f08891796ede1b0f5eda3326facd3adb |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
| MD5 | 07c7900636a606aa1a6bd1eade14461b |
| SHA1 | 26313a70d15857b73c05568fc72ed652ee2e28e2 |
| SHA256 | 312378e63cc0c17a4f6c7cfd7151d269381718637caed0e82878affc2bd6af4a |
| SHA512 | 424d02cb94a1ed8206aa58e5162f1b3311b125e2af6f52fae4ce93c7ee6e074a69424a4186f8a5a700e9ddf5c42453251c51200b968dfcdc2699561036cd472c |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
| MD5 | be84e67ea6070511557a7f1e3cc19e5a |
| SHA1 | 9fd0c9f842c55cb3ad93c5da05e69c25f9b89b9a |
| SHA256 | f7467c7dccdc40f70034dd2436b5607d08e7d7be24d5def4d65c343cc9b5ed7f |
| SHA512 | 5d69ea42491a09e2ef8332c07d04df24cd7214ba072a2644b0e27604e3f85b39e0791154d47513b0eb75b53395d13b11e439fb20710daf720e26b3bf44db849c |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
| MD5 | 418e433749c0ee5dac7f22f60f77b1f2 |
| SHA1 | 6887c9fce7802bb556491beee2a7c1bc68b3a744 |
| SHA256 | 7bbd77fe546e75282b8e7ce6ff1c494f57891e409e7a2883945016ed81de48b8 |
| SHA512 | 8e227721a0794aae7eba664340e6206630fbaea244a0aad30c3a15e8e946879ae1d062f8994b4a8c9ba3e81d510550d17ffc8dbb138f8320e8783c576043c0ce |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
| MD5 | 296e714af586623f67dd568b4dc9e121 |
| SHA1 | 1c89ffe7aa602228ec303767685c6112e214ad73 |
| SHA256 | efd943f3c58efd241b31394437309072464bb5af222d7f3b360bbbf08b02546e |
| SHA512 | 82617b3a9b4f1993800e19e79ed76f3aef61962df47cc4c34686ffe1611a9f93b4c340c071397f5493f448c7154532393c0952cb29dc24b0d6664b02e633d911 |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
| MD5 | feae0b8a7b67b9ee3f48a84f1e8bda1c |
| SHA1 | 0eb91503d7bf5d18e31fce3c66b19e8491b69d35 |
| SHA256 | f5568130fc777dc15b4392d1d53efc06049a18cebc0eda0556744a19d4bde04a |
| SHA512 | d8e873c3b584ba7f8edb08df9f81bc22781550a7ef5c56898f7ea754a610372834ff3ae5fc2ce3ca5bd06383b657d91cdf1060f26b6037be2ea1c586d2dcacdd |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1
| MD5 | 2343fb7a8a83d3f0aea7b80cda170381 |
| SHA1 | 943384acfba81a646652111fbaa8b27c1183bc7e |
| SHA256 | 4f9a4a7248d5543821d0ecf78b703936474430a1fd7cc2c7e9bd27e3ad0af254 |
| SHA512 | 1bd80179fc186cff3d17e516a39de28d5636617df4f61b4cd96b9e9305333516b122dcab1804dcccb9228e3643ce0e1478db0d8461720cbc7e078622db12eef3 |