Siddhant Mishra
@SiddhantMumbaiCompletionist
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159 detections
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Detects algorithmically generated domain names at the resolver. Malware families
using a DGA cycle through many candidate domains to find their live controller, so
the resolver sees a burst of long, random-looking names, most of which fail to
resolve.
Resolver-level visibility covers every device that uses the resolver, including
those with no endpoint agent — appliances, IoT and unmanaged hosts.
Onboarding: INFOBLOX is ingested via Syslog (CEF) (Bloo extractor 155).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=dns where sourcename='INFOBLOX' and action='DNS_QUERIED'
and len(query) > 30
| groupby srcip, query, recordtype, responsecode
using a DGA cycle through many candidate domains to find their live controller, so
the resolver sees a burst of long, random-looking names, most of which fail to
resolve.
Resolver-level visibility covers every device that uses the resolver, including
those with no endpoint agent — appliances, IoT and unmanaged hosts.
Onboarding: INFOBLOX is ingested via Syslog (CEF) (Bloo extractor 155).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=dns where sourcename='INFOBLOX' and action='DNS_QUERIED'
and len(query) > 30
| groupby srcip, query, recordtype, responsecode
Detects mail being redirected to an external recipient. Redirection rules are the
classic persistence mechanism on a compromised mailbox: they survive password resets,
require no further access, and quietly copy correspondence to the attacker for as
long as they remain in place.
This is among the most under-monitored controls in most estates, because the rule is
set once and never fires an alert again.
Onboarding: MS-EXCHANGE is ingested via Syslog (Bloo extractor 142).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=email-gateway where sourcename='MS-EXCHANGE'
and action='EMAIL_REDIRECTED'
| groupby sender, recipient, direction, remoteip
classic persistence mechanism on a compromised mailbox: they survive password resets,
require no further access, and quietly copy correspondence to the attacker for as
long as they remain in place.
This is among the most under-monitored controls in most estates, because the rule is
set once and never fires an alert again.
Onboarding: MS-EXCHANGE is ingested via Syslog (Bloo extractor 142).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=email-gateway where sourcename='MS-EXCHANGE'
and action='EMAIL_REDIRECTED'
| groupby sender, recipient, direction, remoteip
Detects a privileged session beginning with no preceding credential retrieval by the
same account. The expected sequence is checkout then session. A session without one
suggests the credential was obtained outside the vault — cached, shared, or stolen —
which defeats the control the vault exists to provide.
Correlate SESSION_STARTED in the audit stream against PASSWORD_RETRIEVED in the iam
stream for the same user within a preceding window.
Onboarding: PAM360 is ingested via Syslog (Bloo extractor 879).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=audit where sourcename='PAM360' and action='SESSION_STARTED'
| groupby user, targetuser, srcip, devicetype
same account. The expected sequence is checkout then session. A session without one
suggests the credential was obtained outside the vault — cached, shared, or stolen —
which defeats the control the vault exists to provide.
Correlate SESSION_STARTED in the audit stream against PASSWORD_RETRIEVED in the iam
stream for the same user within a preceding window.
Onboarding: PAM360 is ingested via Syslog (Bloo extractor 879).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=audit where sourcename='PAM360' and action='SESSION_STARTED'
| groupby user, targetuser, srcip, devicetype
Detects one endpoint authenticating under several distinct user identities in a short
period. A workstation normally carries one user at a time. Several identities from
one endpoint suggests credential testing, a shared or kiosk device being misused, or
an attacker working through harvested accounts from a single foothold.
Onboarding: CISCO-ISE is ingested via Syslog (KV) (Bloo extractor 196).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=authentication where sourcename='CISCO-ISE' and action='LOGIN'
| duration 1h
| groupby srcip
| select srcip, distinct_count(user)
| having distinct_count_col1 > 4
period. A workstation normally carries one user at a time. Several identities from
one endpoint suggests credential testing, a shared or kiosk device being misused, or
an attacker working through harvested accounts from a single foothold.
Onboarding: CISCO-ISE is ingested via Syslog (KV) (Bloo extractor 196).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=authentication where sourcename='CISCO-ISE' and action='LOGIN'
| duration 1h
| groupby srcip
| select srcip, distinct_count(user)
| having distinct_count_col1 > 4
Detects extensive file access on the NAS from a source address without prior
history. Shared storage holds concentrated value, and bulk reads from an unfamiliar
origin is the reconnaissance-then-collection pattern applied to a file share.
Onboarding: DISKSTATION-NAS is ingested via Syslog (Bloo extractor 826).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=documents where sourcename='DISKSTATION-NAS' and action='ACCESSED'
| duration 1h
| groupby srcip, user
| select srcip, user, distinct_count(file)
| having distinct_count_col1 > 100
history. Shared storage holds concentrated value, and bulk reads from an unfamiliar
origin is the reconnaissance-then-collection pattern applied to a file share.
Onboarding: DISKSTATION-NAS is ingested via Syslog (Bloo extractor 826).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=documents where sourcename='DISKSTATION-NAS' and action='ACCESSED'
| duration 1h
| groupby srcip, user
| select srcip, user, distinct_count(file)
| having distinct_count_col1 > 100
Detects a host generating an unusual rate of failed DNS resolutions. A high NXDOMAIN
rate is the signature of a client searching for something that mostly does not exist
— DGA malware hunting for its live controller, or tooling enumerating subdomains.
This complements the DGA detection: entropy catches the shape of the names, NXDOMAIN
rate catches the behaviour regardless of how the names look.
Onboarding: INFOBLOX is ingested via Syslog (CEF) (Bloo extractor 155).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=dns where sourcename='INFOBLOX' and action='DNS_QUERIED'
and lower(responsecode) like '%nxdomain%'
| duration 10m
| groupby srcip
| select srcip, count(*) as cnt
| having cnt > 50
rate is the signature of a client searching for something that mostly does not exist
— DGA malware hunting for its live controller, or tooling enumerating subdomains.
This complements the DGA detection: entropy catches the shape of the names, NXDOMAIN
rate catches the behaviour regardless of how the names look.
Onboarding: INFOBLOX is ingested via Syslog (CEF) (Bloo extractor 155).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=dns where sourcename='INFOBLOX' and action='DNS_QUERIED'
and lower(responsecode) like '%nxdomain%'
| duration 10m
| groupby srcip
| select srcip, count(*) as cnt
| having cnt > 50
Detects authentication succeeding via MAC address where certificate or credential
based 802.1X is expected. MAC addresses are trivially spoofed, so a port falling back
to MAC authentication is a weak point an attacker can walk through by cloning the
address of a permitted device such as a printer or IP phone.
Onboarding: ARUBA-CLEARPASS is ingested via Syslog (CEF) (Bloo extractor 261).
Integration guide: https://bloo.io/docs/integrations/aruba-clearpass
BQL (Bloo Query Language):
stream=authentication where sourcename='ARUBA-CLEARPASS' and action='LOGIN'
| groupby authproto, user, srcip, role
based 802.1X is expected. MAC addresses are trivially spoofed, so a port falling back
to MAC authentication is a weak point an attacker can walk through by cloning the
address of a permitted device such as a printer or IP phone.
Onboarding: ARUBA-CLEARPASS is ingested via Syslog (CEF) (Bloo extractor 261).
Integration guide: https://bloo.io/docs/integrations/aruba-clearpass
BQL (Bloo Query Language):
stream=authentication where sourcename='ARUBA-CLEARPASS' and action='LOGIN'
| groupby authproto, user, srcip, role
Detects a burst of uploads to Box from a single account. Where mass download suggests
theft from the platform, a mass upload suggests the platform is being used as the
staging point — data collected elsewhere in the estate being moved into cloud storage
the attacker controls or can reach from outside.
Onboarding: BOX is ingested via Box native connector (Bloo extractor 711).
Integration guide: https://bloo.io/docs/hypercloud/box-connector
BQL (Bloo Query Language):
stream=documents where sourcename='BOX' and action='UPLOADED'
| duration 1h
| groupby user, srcip
| select user, srcip, count(*) as cnt
| having cnt > 40
theft from the platform, a mass upload suggests the platform is being used as the
staging point — data collected elsewhere in the estate being moved into cloud storage
the attacker controls or can reach from outside.
Onboarding: BOX is ingested via Box native connector (Bloo extractor 711).
Integration guide: https://bloo.io/docs/hypercloud/box-connector
BQL (Bloo Query Language):
stream=documents where sourcename='BOX' and action='UPLOADED'
| duration 1h
| groupby user, srcip
| select user, srcip, count(*) as cnt
| having cnt > 40
Detects a privileged password change shortly after failed authentication attempts
against the vault. An attacker who gains vault access frequently rotates the
credential to lock out the legitimate owner and secure their own hold on it.
The sequence matters more than either event alone: failures followed by a successful
change is the pattern, and a change on its own is routine.
Onboarding: CYBERARK is ingested via Syslog (CEF) (Bloo extractor 279).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=iam where sourcename='CYBERARK' and action='PASSWORD_CHANGED'
| groupby user, targetuser, srcip, reason
against the vault. An attacker who gains vault access frequently rotates the
credential to lock out the legitimate owner and secure their own hold on it.
The sequence matters more than either event alone: failures followed by a successful
change is the pattern, and a change on its own is routine.
Onboarding: CYBERARK is ingested via Syslog (CEF) (Bloo extractor 279).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=iam where sourcename='CYBERARK' and action='PASSWORD_CHANGED'
| groupby user, targetuser, srcip, reason
Detects a user being added to a role within ClearPass. Role membership determines
what the network will permit an identity to reach, so granting a privileged role is
a network-layer privilege escalation that leaves no trace on any endpoint.
Additions outside provisioning hours, or by an account that does not normally
administer ClearPass, are the ones worth pursuing.
Onboarding: ARUBA-CLEARPASS is ingested via Syslog (CEF) (Bloo extractor 261).
Integration guide: https://bloo.io/docs/integrations/aruba-clearpass
BQL (Bloo Query Language):
stream=iam where sourcename='ARUBA-CLEARPASS' and action='USER_ADDED'
| groupby user, targetuser, role, srcip
what the network will permit an identity to reach, so granting a privileged role is
a network-layer privilege escalation that leaves no trace on any endpoint.
Additions outside provisioning hours, or by an account that does not normally
administer ClearPass, are the ones worth pursuing.
Onboarding: ARUBA-CLEARPASS is ingested via Syslog (CEF) (Bloo extractor 261).
Integration guide: https://bloo.io/docs/integrations/aruba-clearpass
BQL (Bloo Query Language):
stream=iam where sourcename='ARUBA-CLEARPASS' and action='USER_ADDED'
| groupby user, targetuser, role, srcip
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