Cobalt Stike Beacon Detected – 54[.]196[.]247[.]105:443

The Information provided at the time of posting was detected as “Cobalt Strike”. Depending on when you are viewing this article, it may no longer be the case and could be determined as being a false positive. Please do your own additional validation. – RedPacket Security

TimeStamp 2021-11-13T09:19:20.373041

General Information

941232505

Cloud Provider	Amazon
Cloud Region	us-east-1
Service	AMAZON
Domains	amazonaws[.]com
Hostnames	ec2-54-196-247-105[.]compute-1[.]amazonaws[.]com
HTTP Host	54[.]196[.]247[.]105
ISP	Amazon.com, Inc.
ORG	Amazon.com, Inc.
OS	N/A
HTTP	N/A
HTTP HTML HASH	N/A
HTTP LOCATION	/
HTTP REDIRECTS
HTTP ROBOTS	N/A
HTTP ROBOTS HASH	N/A
HTTP SECURITY.TXT	N/A
HTTP SECURITY.TXT HASH	N/A
HTTP SERVER	N/A
HTTP SITEMAP	N/A
HTTP SITEMAP HASH	N/A
HTTP TITLE	N/A
LOCATION (AREA CODE)	N/A
LOCATION (CITY)	Ashburn
LOCATION (COUNTRY CODE)	US
LOCATION (COUNTRY NAME)	United States
LOCATION (LATITUDE)	39.04372
LOCATION (LONGITUDE)	-77.48749
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	986f4c76afd9375dfcd5c9b1a3ce91d3e2189dd5
SSL ISSUED	20211025172924Z
SSL EXPIRES	20221025172924Z
SSL CYPHER	ECDHE-RSA-AES256-GCM-SHA384
SSL VERSION	TLSv1/SSLv3
SSL TRUST (REVOKED)	N/A
TAGS	cloud, self-signed

Cobalt Strike Beacon Information

Beacon Type	HTTPS
http-get.client	Accept: */*, Accept-Language: en-US, Connection: close, ;_ga=GA1[.]1[.]926, ;__ar_v4=%1468UMDGS521, d=, _ga=GA1[.]3[.]877;, b=[.]12VTkw23i;, Cookie
http-post.client	Accept: */*, Accept-Language: en-US, ;_ga=GA1[.]2[.]875, __ar_v4=%8867UMDGS643, d=, _ga=GA1[.]2[.]875;, b=[.]12vPkW22o;, Cookie, GA1[.], _ga
DNS Beacon MaxDNS	N/A
DNS Beacon Idle	N/A
Beacon Jitter	20
dns-beacon.strategy_fail_seconds	-1
dns-beacon.strategy_rotate_seconds	-1
dns-beacon.strategy_fail_x	-1
HTTP GET URI	ec2-34-201-60-69[.]compute-1[.]amazonaws[.]com,/messages/C16438C0MM,ec2-18-206-160-62[.]compute-1[.]amazonaws[.]com,/messages/C16438C0MM,ec2-54-91-206-76[.]compute-1[.]amazonaws[.]com,/messages/C16438C0MM
HTTP POST URI	/api/redirect.do
Max GET Size	1399733
Port	443
post-ex.spawnto_x64	%windir%\sysnative\gpupdate[.]exe
post-ex.spawnto_x86	%windir%\syswow64\gpupdate[.]exe
process-inject.startrwx	64
process-inject.userwx	32
process-inject.allocator	1
proxy.behavior	2 (Use IE settings)
sleeptime	5000
useragent_header	Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)
uses_cookies	1
process-inject.execute	ntdll:RtlUserThreadStart, CreateThread, NtQueueApcThread, CreateRemoteThread, RtlCreateUserThread
Watermark	57752856
Beacon Stage Cleanup	1