OopsIE uses the Confuser protector to obfuscate an embedded .Net Framework assembly used for C2. OopsIE also encodes collected data in hexadecimal format before writing to files on disk and obfuscates strings.23
tool
OopsIE S0264
- Type
- malware
- Platform
- Windows
- Created
- 17 October 2018
- Last modified
- 25 April 2025
OopsIE is a Trojan used by OilRig to remotely execute commands as well as upload/download files to/from victims. [1]
19
TechniquesTop 23%
8
TacticsTop 20%
1
Threat groupunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0264
OopsIE uses the SmartAssembly obfuscator to pack an embedded .Net Framework assembly used for C2.4
OopsIE exfiltrates command output and collected files to its C2 server in 1500-byte blocks.5
OopsIE can upload files from the victim's machine to its C2 server.6
OopsIE creates a scheduled task to run itself every three minutes.89
Standing S0264
Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.
Reach
Techniques19Top 23%
77th percentile · 77% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics8Top 20%
80th percentile · 80% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat group161% tie · 22 values
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
Campaigns085% tie · 8 values
85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
Rules / technique24med57th pct
57th percentile · 57% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Tests / technique6med
Detection coverage S0264
675 distinct rules cover the 19 techniques recorded for this tool. The 717 technique-to-rule mappings resolve to 675 distinct rules, because one rule can cover several techniques. 493 Sigma · 182 Splunk.
18 covered by at least one rule1 with no coverage675 distinct rules in total
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