Malware

Pyramid

For your environment

Hunt this family in your stack

Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.

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MITRE ATT&CK

Techniques & procedures

5 distinct techniques documented for this family, organized by ATT&CK tactic.

Execution

1 technique

T1059.006PythonEvidence1

The file b5yogiiy3c.dll is an python script... The payload is processed with compile() , using a synthetic filename... and exec mode, then executed immediately... Pyramid ... evades EDR detection by using the LOLBin python.exe to run Python code in memory.

Stealth

2 techniques

T1140Deobfuscate/Decode Files or InformationEvidence1

Both screenshots show imported methods assigned to variables, with zlib.decompress prepared for later to handle compressed payloads. It also uses base64.b85decode... One reverses Base85 encoding, and the other converts integers to strings... A large, high-entropy blob serves as the encoded payload. This blob is fed to WgGsgQuaeeYg7e() , which decodes and decrypts it using helper functions.

T1620Reflective Code LoadingEvidence1

The payload is processed with compile() , using a synthetic filename ( <jK6xvQeYbpkDD> ) and exec mode, then executed immediately. This keeps the next-stage logic in memory, reducing detection risk.

Command and Control

2 techniques

T1105Ingress Tool TransferEvidence1

This HTTP response is part of the Pyramid framework... The framework delivers encrypted code using ChaCha20 or XOR and includes modules such as secretsdump.py and LaZagne.py for post-exploitation.

T1571Non-Standard PortEvidence1

Pyramid C2 particularly favours port 8000... Recent C2 infrastructure from September to November 2025 shows only one Pyramid instance on port 1976 in the current Censys dataset.

INDICATORS OF COMPROMISE

IOCs tracked for this family

1 indicator attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.

View more in app

Hashes

1 tracked

File hashes (MD5, SHA-1, SHA-256) from samples and reports.

TypeValueLatest sighting

hash.sha256●●●●●●●●●●●●View more in app3 months ago

ACTIVITY FEED

Recent activity

1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

1 SOURCESView more in app

infoguard labsNews

Apr 9, 2026

Slithering Through the Noise - Deep Dive into the VIPERTUNNEL Python Backdoor - InfoGuard Labs

A Python-based command-and-control and post-exploitation framework that runs code in memory via python.exe, delivers encrypted payloads using ChaCha20 or XOR, and includes modules for credential dumping and post-exploitation activity.

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: which of your assets match these IOCs, which detections are missing, which campaigns to expect next, and what to do in the next 30 minutes.

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IOC matching1

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

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

MITRE ATT&CK mapping5

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.

Back to malware

Malware

Pyramid

For your environment

Hunt this family in your stack

Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.

Start free trial

MITRE ATT&CK

Techniques & procedures

5 distinct techniques documented for this family, organized by ATT&CK tactic.

Execution

1 technique

T1059.006PythonEvidence1

Stealth

2 techniques

T1140Deobfuscate/Decode Files or InformationEvidence1

T1620Reflective Code LoadingEvidence1

The payload is processed with compile() , using a synthetic filename ( <jK6xvQeYbpkDD> ) and exec mode, then executed immediately. This keeps the next-stage logic in memory, reducing detection risk.

Command and Control

2 techniques

T1105Ingress Tool TransferEvidence1

This HTTP response is part of the Pyramid framework... The framework delivers encrypted code using ChaCha20 or XOR and includes modules such as secretsdump.py and LaZagne.py for post-exploitation.

T1571Non-Standard PortEvidence1

Pyramid C2 particularly favours port 8000... Recent C2 infrastructure from September to November 2025 shows only one Pyramid instance on port 1976 in the current Censys dataset.

INDICATORS OF COMPROMISE

IOCs tracked for this family

1 indicator attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.

View more in app

Hashes

1 tracked

File hashes (MD5, SHA-1, SHA-256) from samples and reports.

TypeValueLatest sighting

hash.sha256●●●●●●●●●●●●View more in app3 months ago

ACTIVITY FEED

Recent activity

1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

1 SOURCESView more in app

infoguard labsNews

Apr 9, 2026

Slithering Through the Noise - Deep Dive into the VIPERTUNNEL Python Backdoor - InfoGuard Labs

What this page doesn’t show

The version that knows your environment.

Start free trial

IOC matching1

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

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

MITRE ATT&CK mapping5

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.