Exploitation for Credential Access T1212

Adversaries may exploit software vulnerabilities in an attempt to collect credentials. Exploitation of a software vulnerability occurs when an adversary takes advantage of a programming error in a program, service, or within the operating system software or kernel itself to execute adversary-controlled code.

Events covered

8 catalog events are tagged with this technique by at least one rule.

Authoring guide

Patterns shared across the 6 rules above: which fields they filter on, what specific values they look for, and what they exclude. The catalog normalizes field names across vendors so Sigma's Image, Elastic's process.name, and Splunk's process_name collapse into one row. Each rule contributes at most once per row.

Fields filtered most (11 distinct)

The fields most rules look at when detecting this technique. The How column shows the operators authors use (eq, wildcard, regex_match, match) and how often each appears. Sample values are concrete examples to start from, not an exhaustive list.

FieldRulesHowSample values
CommandLine1contains 1/print/pipe/, c:\windows\system32\davclnt.dll,davsetcookie, http
EventID1eq 14104
Hashes1contains 1sha1=1c6452026c56efd2c94cea7e0f671eb55515edb0, sha1=1e8c2cac2e4ce7cbd33c3858eb2e24531cb8a84d, sha1=2e94b305d6812a9f96e6781c888e48c7fb157b6b
Image1ends_with 1\rundll32.exe
OriginalFileName1eq 1rundll32.exe
Provider_Name1eq 1Audit-CVE, Microsoft-Windows-Audit-CVE
ScriptBlockText1contains 1convertto-aadintbackdoor
Status1eq 10x10, 0x11, 0x13
event.type1eq 1start
process.args1eq 1, wildcard 1?:\Windows\SysWOW64\davclnt.dll,DavSetCookie, ?:\Windows\System32\davclnt.dll,DavSetCookie, http*/pipe/spoolss
process_name1eq 1rundll32.exe

Top indicator values (86 distinct)

Specific (field, operator, value) combinations the rules check for, ranked by how many rules under this technique use each one. The Corpus reach column counts how many rules across the entire catalog (any technique) check the same combination. High numbers point to widely-used indicators that are likely noisy on their own; combine them with another condition for useful signal. Blank means the combination is specific to rules under this technique. Click a value to expand the rules under this technique that use it.

FieldKindValueRules (here)Corpus reach
CommandLinecontains
/print/pipe/
1
CommandLinecontains
c:\windows\system32\davclnt.dll,davsetcookie
13
CommandLinecontains
http
138
CommandLinecontains
spoolss
1
CommandLinecontains
srvsvc
1
EventIDeq
4104
1268
Hashescontains
sha1=1c6452026c56efd2c94cea7e0f671eb55515edb0
1
Hashescontains
sha1=1e8c2cac2e4ce7cbd33c3858eb2e24531cb8a84d
1
Hashescontains
sha1=2e94b305d6812a9f96e6781c888e48c7fb157b6b
1
Hashescontains
sha1=41cc2b15c662bc001c0eb92f6cc222934f0beeea
1
Hashescontains
sha1=4923d460e22fbbf165bbbaba168e5a46b8157d9f
1
Hashescontains
sha1=4f6f38b4cec35e895d91c052b1f5a83d665c2196
1
Hashescontains
sha1=53a44c2396d15c3a03723fa5e5db54cafd527635
1
Hashescontains
sha1=79ef78a797403a4ed1a616c68e07fff868a8650a
1
Hashescontains
sha1=8793bf166cb89eb55f0593404e4e933ab605e803
1
Hashescontains
sha1=9c5e496921e3bc882dc40694f1dcc3746a75db19
1
Hashescontains
sha1=a39b57032dbb2335499a51e13470a7cd5d86b138
1
Hashescontains
sha1=aeb573accfd95758550cf30bf04f389a92922844
1
Hashescontains
sha1=c28f606df28a9bc8df75a4d5e5837fc5522dd34d
1
Hashescontains
sha1=c6b41d3afdcdcaf9f442bbe772f5da871801fd5a
1
Hashescontains
sha1=d209430d6af54792371174e70e27dd11d3def7a7
1
Hashescontains
sha1=dd44133716b8a241957b912fa6a02efde3ce3025
1
Hashescontains
sha1=ddd2db1127632a2a52943a2fe516a2e7d05d70d2
1
Hashescontains
sha1=e841a63e47361a572db9a7334af459ddca11347a
1
Hashescontains
sha1=f201504bd96e81d0d350c3a8332593ee1c9e09de
1
Hashescontains
sha256=056744a3c371b5938d63c396fe094afce8fb153796a65afa5103e1bffd7ca070
1
Hashescontains
sha256=178d5ee8c04401d332af331087a80fb4e5e2937edfba7266f9be34a5029b6945
1
Hashescontains
sha256=1922a419f57afb351b58330ed456143cc8de8b3ebcbd236d26a219b03b3464d7
1
Hashescontains
sha256=2ef157a97e28574356e1d871abf75deca7d7a1ea662f38b577a06dd039dbae29
1
Hashescontains
sha256=332ddaa00e2eb862742cb8d7e24ce52a5d38ffb22f6c8bd51162bd35e84d7ddf
1

Rules under this technique

Every rule in the catalog tagged with this technique, grouped by vendor. Click a rule title for its full predicates, exclusions, and indicators.

Sigma 4 rules

Elastic 1 rule

Splunk 1 rule