Skip to main content
Mallory
Back to threat actors
2 malware families

STAC5777

Also known asstac5777
Share:
Are they targeting you?

Know when an actor pivots toward your sector

Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.

Start free trial
MITRE ATT&CK

Tradecraft

22 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.

8 of 15 tactics29 techniques×N= number of intelligence reports citing this technique
MITRE ATT&CK
TA0043
Reconnaissance
1 technique
T1598
Phishing for Information
TA0001
Initial Access
1 technique
T1566
Phishing
T1566.003×2
Spearphishing via Service
TA0002
Execution
1 technique
T1204
User Execution
T1204.002
Malicious File
TA0005
Stealth
5 techniques
T1027
Obfuscated Files or Information
T1036
Masquerading
T1036.005
Match Legitimate Resource Name or Location
T1218
System Binary Proxy Execution
T1218.007
Msiexec
T1497
Virtualization/Sandbox Evasion
T1497.001
System Checks
T1622×2
Debugger Evasion
TA0112
Defense Impairment
1 technique
T1553
Subvert Trust Controls
T1553.002
Code Signing
TA0007
Discovery
6 techniques
T1033
System Owner/User Discovery
T1057
Process Discovery
T1082
System Information Discovery
T1497
Virtualization/Sandbox Evasion
T1497.001
System Checks
T1614
System Location Discovery
T1614.001
System Language Discovery
T1622×2
Debugger Evasion
TA0008
Lateral Movement
1 technique
T1021
Remote Services
TA0011
Command and Control
4 techniques
T1071
Application Layer Protocol
T1071.004×2
DNS
T1219
Remote Access Tools
T1568
Dynamic Resolution
T1572
Protocol Tunneling
ARSENAL

Associated malware families

2 malware families attributed to this actor across reporting.

FamilyContextEvidenceLast seen
A0BackdoorNine malware samples from the A0Backdoor family surfaced on MalwareBazaar today -- all signed with a now-revoked Extended Validation code signing certificate issued to an Argentinian media company.2Apr 25, 2026
Black BastaEarly tactics in the attack align with those of “Storm-1811” (aka “STAC5777”), a threat group known to deploy “Black Basta” ransomware.1Mar 18, 2026
IOCS

Observables

25 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.

25 IOCsView more in app

IOC values are gated. View more in Mallory for domains, IPs, hashes, and other artifacts, or pipe them straight into your SIEM.

ACTIVITY FEED

Recent activity

No public activity tracked yet. Mallory keeps watching.

0 SOURCESView more in app

No public activity observed for this threat actor.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: sector and geo overlap with your footprint, the IOCs they’re burning right now, detection coverage, and what to do next.
Start free trial
Target overlap

Match sector + geo + tech-stack targeting against your real footprint.

Tradecraft mapping22

Every observed MITRE ATT&CK technique, grouped by tactic.

Malware arsenal2

Families this actor is known to deploy, with IOCs and behavior.

Exploited CVEs

CVEs this actor has used in known campaigns.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Observables25

Domains, IPs, and hashes tied to this actor, refreshed continuously.