Chinese state-sponsored group targeting Japan and Taiwan, known for modifying router firmware to maintain persistent access to networks. This profile is mapped to MITRE ATT&CK G0098 and covers attribution, tooling, targeting, and defensive recommendations based on observed campaigns.
Overview & Attribution
BlackTech (also tracked as Palmerworm) is a threat group attributed to China. The group primarily targets Japan, Taiwan, government, defense, technology for intelligence collection and operational objectives aligned with state interests.
This group is tracked as G0098 in the MITRE ATT&CK framework. All techniques referenced in this report are mapped to ATT&CK for consistent threat modeling and detection engineering.
Arsenal & Tools
Known tools and malware associated with BlackTech include:
- BendyBear
- PLEAD
- TSCookie
- FakeDead
Targeting & Operations
BlackTech operations focus on Japan, Taiwan, government, defense, technology. The group typically gains initial access through spear-phishing, exploitation of public-facing applications, or strategic web compromises before deploying custom implants for persistent access and data exfiltration.
Organizations in the Japan sector should treat BlackTech as a relevant threat and validate their detection coverage against the MITRE ATT&CK techniques listed below.
MITRE ATT&CK Mapping
Key techniques observed in BlackTech operations:
| Technique ID | Technique Name | Tactical Context |
|---|---|---|
| T1542.004 | T1542.004 | Observed in BlackTech campaigns |
| T1059.001 | T1059.001 | Observed in BlackTech campaigns |
| T1071.001 | T1071.001 | Observed in BlackTech campaigns |
| T1078 | T1078 | Observed in BlackTech campaigns |
Full ATT&CK mapping: https://attack.mitre.org/groups/G0098/
Notable Campaigns
This threat group has been active in operations targeting Japan, Taiwan, government, defense, technology. Security researchers have documented campaigns involving BendyBear and other tools deployed against organizations in multiple countries. Attribution confidence varies by campaign, but consistent infrastructure and TTP overlap links activity to China-nexus operations.
Detection & Defense
Recommended defensive measures against BlackTech:
- Network monitoring: Detect C2 beaconing patterns associated with BendyBear and related implants
- Endpoint detection: Deploy behavioral rules for the ATT&CK techniques above, particularly T1542.004 and T1059.001
- Email security: Implement robust phishing defenses including URL sandboxing and attachment detonation
- Patch management: Prioritize patching of internet-facing applications exploited by this group
- Threat hunting: Proactively hunt for IOCs and behavioral indicators mapped to G0098 in MITRE ATT&CK
How Mjolnir Security Can Help
Defend Against BlackTech
Mjolnir Security provides tailored threat intelligence, detection engineering, and incident response services to help organizations defend against China-nexus threat actors.
Contact us: mjolnirsecurity.com
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