PureLogs: Delivery via PawsRunner Steganography
Attackers are concealing .NET infostealers within seemingly innocuous images to evade detection. A phishing campaign uses TXZ archive attachments with invoice-themed lures to initiate infection. The embedded JavaScript leverages environment variables to hide malicious commands, launching PowerShell to decode and decrypt payloads. PawsRunner, a steganography loader, extracts encrypted data from PNG images containing cat photos. This loader evolved from simple PE downloads to sophisticated steganographic extraction with fallback mechanisms. The final payload, PureLogs version 5.0.0, is a comprehensive infostealer from the Pure family that harvests credentials from browsers, cryptocurrency wallets, password managers, communication apps, and other applications. It employs extensive async/await patterns and communicates with command and control infrastructure via HTTPS using multiple endpoints to exfiltrate encrypted and compressed stolen data.
AI Analysis
Technical Summary
Attackers use a phishing campaign with TXZ archive attachments and invoice-themed lures to deliver a .NET infostealer called PureLogs version 5.0.0. The embedded JavaScript hides malicious commands via environment variables and launches PowerShell to decode and decrypt payloads. The PawsRunner loader uses steganography to extract encrypted data from PNG images containing cat photos, evolving from simple PE downloads to sophisticated steganographic extraction with fallback mechanisms. PureLogs harvests credentials from various applications including browsers, cryptocurrency wallets, and password managers, and communicates with its command and control infrastructure via HTTPS using multiple endpoints to exfiltrate encrypted and compressed stolen data.
Potential Impact
The PureLogs malware harvests sensitive credentials from browsers, cryptocurrency wallets, password managers, communication applications, and other software, potentially leading to credential theft and unauthorized access to victims' accounts and assets. The use of steganography and environment variable obfuscation helps evade detection, increasing the likelihood of successful infection and data exfiltration. There are no reports of known exploits in the wild at this time.
Mitigation Recommendations
No official patch or remediation guidance is available for this threat. Organizations should rely on detection and prevention controls such as email filtering to block phishing attempts, endpoint protection capable of detecting steganographic loaders and .NET infostealers, and network monitoring for suspicious HTTPS traffic to known malicious endpoints. Since this is a malware delivery technique rather than a software vulnerability, patching is not applicable. Regular user awareness training to recognize phishing lures is recommended.
Indicators of Compromise
- domain: everycarebd.com
- url: https://everycarebd.com/imagelkjh0987.png
- ip: 5.101.84.202
- hash: 0fcb86ae384e9975933314ac2a231f0ff46c0208556bf4a16f096a642d3f505e
- hash: 1b730de72f921458b6b162b105a9521a931f07e19d3cac53207c7a8efbc412f9
- hash: 6910d27b9e1dc2229a8c280f5d0cea85146d50274c56a4d9a5b8d1793505b1b9
- hash: 8d0bcde739929fe41a6bcaaa62f7cba802af90b2ba8dea6ed1a4821236cdd588
- hash: 93724f1a9ad3a28c171927fc449ac34dc6ca890f915f00210e8b305577388c6e
- hash: e2308749f6b7b7573009d0cac6616a6aa83cecb1f2933e868776400d122c86ec
- hash: a1c01f257c924fb04adce7f10f1fdf91
- hash: a72f07130f0f39246e464e4bedb3aaf3
- hash: d4174ea4774547548d6566af193dc82f
- hash: e17f48bbecdd7e5ff104b72e3244e459
- hash: 49cbdd4973bbbe1e36b1d76e6290ca86f04ac620
- hash: 4cd3373fa7ccb5b4c3f62f63f6462d05bb842bf8
- hash: 8a540e57b3494a85847f900a6fe87d79e8708355
- hash: 8b6cfaa75fd4a1692d0c1e18d0aa32ebaa92094d
PureLogs: Delivery via PawsRunner Steganography
Description
Attackers are concealing .NET infostealers within seemingly innocuous images to evade detection. A phishing campaign uses TXZ archive attachments with invoice-themed lures to initiate infection. The embedded JavaScript leverages environment variables to hide malicious commands, launching PowerShell to decode and decrypt payloads. PawsRunner, a steganography loader, extracts encrypted data from PNG images containing cat photos. This loader evolved from simple PE downloads to sophisticated steganographic extraction with fallback mechanisms. The final payload, PureLogs version 5.0.0, is a comprehensive infostealer from the Pure family that harvests credentials from browsers, cryptocurrency wallets, password managers, communication apps, and other applications. It employs extensive async/await patterns and communicates with command and control infrastructure via HTTPS using multiple endpoints to exfiltrate encrypted and compressed stolen data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Attackers use a phishing campaign with TXZ archive attachments and invoice-themed lures to deliver a .NET infostealer called PureLogs version 5.0.0. The embedded JavaScript hides malicious commands via environment variables and launches PowerShell to decode and decrypt payloads. The PawsRunner loader uses steganography to extract encrypted data from PNG images containing cat photos, evolving from simple PE downloads to sophisticated steganographic extraction with fallback mechanisms. PureLogs harvests credentials from various applications including browsers, cryptocurrency wallets, and password managers, and communicates with its command and control infrastructure via HTTPS using multiple endpoints to exfiltrate encrypted and compressed stolen data.
Potential Impact
The PureLogs malware harvests sensitive credentials from browsers, cryptocurrency wallets, password managers, communication applications, and other software, potentially leading to credential theft and unauthorized access to victims' accounts and assets. The use of steganography and environment variable obfuscation helps evade detection, increasing the likelihood of successful infection and data exfiltration. There are no reports of known exploits in the wild at this time.
Mitigation Recommendations
No official patch or remediation guidance is available for this threat. Organizations should rely on detection and prevention controls such as email filtering to block phishing attempts, endpoint protection capable of detecting steganographic loaders and .NET infostealers, and network monitoring for suspicious HTTPS traffic to known malicious endpoints. Since this is a malware delivery technique rather than a software vulnerability, patching is not applicable. Regular user awareness training to recognize phishing lures is recommended.
Technical Details
- Author
- AlienVault
- Tlp
- white
- References
- ["https://www.fortinet.com/blog/threat-research/purelogs-delivery-via-pawsrunner-steganography"]
- Adversary
- null
- Pulse Id
- 6a0f272cd9c82db936e6a249
- Threat Score
- null
Indicators of Compromise
Domain
| Value | Description | Copy |
|---|---|---|
domaineverycarebd.com | — |
Url
| Value | Description | Copy |
|---|---|---|
urlhttps://everycarebd.com/imagelkjh0987.png | — |
Ip
| Value | Description | Copy |
|---|---|---|
ip5.101.84.202 | — |
Hash
| Value | Description | Copy |
|---|---|---|
hash0fcb86ae384e9975933314ac2a231f0ff46c0208556bf4a16f096a642d3f505e | — | |
hash1b730de72f921458b6b162b105a9521a931f07e19d3cac53207c7a8efbc412f9 | — | |
hash6910d27b9e1dc2229a8c280f5d0cea85146d50274c56a4d9a5b8d1793505b1b9 | — | |
hash8d0bcde739929fe41a6bcaaa62f7cba802af90b2ba8dea6ed1a4821236cdd588 | — | |
hash93724f1a9ad3a28c171927fc449ac34dc6ca890f915f00210e8b305577388c6e | — | |
hashe2308749f6b7b7573009d0cac6616a6aa83cecb1f2933e868776400d122c86ec | — | |
hasha1c01f257c924fb04adce7f10f1fdf91 | — | |
hasha72f07130f0f39246e464e4bedb3aaf3 | — | |
hashd4174ea4774547548d6566af193dc82f | — | |
hashe17f48bbecdd7e5ff104b72e3244e459 | — | |
hash49cbdd4973bbbe1e36b1d76e6290ca86f04ac620 | — | |
hash4cd3373fa7ccb5b4c3f62f63f6462d05bb842bf8 | — | |
hash8a540e57b3494a85847f900a6fe87d79e8708355 | — | |
hash8b6cfaa75fd4a1692d0c1e18d0aa32ebaa92094d | — |
Threat ID: 6a0f3a01e1370fbb4820d09c
Added to database: 05/21/2026, 16:59:45 UTC
Last enriched: 05/21/2026, 17:15:21 UTC
Last updated: 07/30/2026, 15:29:45 UTC
Views: 230
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