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Lotus Blossom is a long-running China-linked cyber-espionage threat actor active since at least 2009. It is widely tracked under aliases including Billbug, Thrip, Lotus Panda, Red Salamander, Dragonfish, Bronze Elgin, Raspberry Typhoon, APT30, and G0030. Reporting also links related activity clusters and tooling overlaps to subgroups or associated operations such as Thrip and Billbug. The actor is assessed with high confidence to operate on behalf of Chinese state interests and has focused primarily on intelligence collection rather than disruptive or financially motivated operations. Lotus Blossom has primarily targeted organizations in Asia, especially Southeast Asia, while additional victimology has included entities in Europe and North America. Confirmed target sectors include government, military and defense, telecommunications, financial institutions, manufacturing, energy, media, information technology, and digital certificate authorities. The group has been associated with campaigns against strategically relevant organizations, including government and defense agencies and a digital certificate issuer, consistent with long-term espionage objectives. The actor commonly uses spearphishing with malicious document attachments for initial access and has also been observed exploiting public-facing applications. Post-compromise tradecraft includes extensive reconnaissance and Active Directory enumeration, including use of AdFind; command execution and payload delivery through PowerShell; use of dual-use administrative tools; network mapping; and sustained persistence. Observed behaviors include service creation, scheduled tasks, autorun-style persistence, proxy-aware command-and-control, and use of loaders and backdoors that support remote execution, file theft, and download of additional payloads. Malware and tooling associated with Lotus Blossom include Elise, Hannotog, Sagerunex, Soul, SoulSearcher, Chrysalis, and related loaders and shell backdoors. Elise has been linked to Lotus Blossom and Dragonfish activity and is notable for exploit-based delivery, sandbox evasion, persistence, proxy modification, command execution, and host reconnaissance. Sagerunex is a signature espionage backdoor associated with the group that supports remote command execution, file download, and exfiltration, uses encrypted configuration and communications, is proxy-aware, and can operate within configured time windows to blend with normal user activity. Hannotog has been used as a backdoor for command execution and persistence. More recent reporting also linked Lotus Blossom to a selective supply-chain compromise involving trojanized software updates, with follow-on use of DLL sideloading, Cobalt Strike, and Metasploit. Operationally, Lotus Blossom demonstrates mature espionage tradecraft including defense evasion, in-memory or reflective loading, process injection, DLL sideloading, use of legitimate services or trusted binaries to mask activity, and selective targeting. The group’s campaigns consistently align with strategic intelligence collection against government, defense, and other high-value organizations.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
53 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
30 malware families attributed to this actor across reporting.
25 additional families tracked in Mallory.
12 CVEs this actor has used in observed campaigns. 12 of them exploited in the wild.
Lotus Blossom, a suspected China state-sponsored threat actor, exploited CVE-2025-15556 to hijack Notepad++'s update channel and deliver a Cobalt Strike Beacon and the Chrysalis backdoor.
The same analysis from CSW found that a critical buffer overflow vulnerability in the ListView/TreeView ActiveX controls used by Office documents (CVE-2012-0158) ... are being exploited by 23 APT groups, including most recently by the Thrip APT group (Lotus Blossom/BitterBug), in November 2022.
The same analysis from CSW found that ... a high-severity memory corruption issue in Microsoft Office (CVE-2017-11882) are being exploited by 23 APT groups, including most recently by the Thrip APT group (Lotus Blossom/BitterBug), in November 2022.
The outcome: no it is not CVE-2017-11882 but rather CVE-2018-0802. CVE-2018-0802? This a second exploit also included in EQNEDT32.EXE which was detected in later December.
This detection identifies instances where Windows Explorer.exe spawns PowerShell or cmd.exe processes, particularly focusing on executions initiated by LNK files. This behavior is associated with the ZDI-CAN-25373 Windows shortcut zero-day vulnerability, where specially crafted LNK files are used to trigger malicious code execution through cmd.exe or powershell.exe. This technique has been actively exploited by multiple APT groups in targeted attacks through both HTTP and SMB delivery methods.
7 more CVEs tied to this actor tracked in Mallory.
76 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Listed as one of many threat actors associated with the detection's ATT&CK-style annotations for PowerShell and DNS TXT command-and-control behavior; no specific campaign or activity is described in this reference.
Associated with Elise malware and described as primarily targeting governments and defense contractors.
Listed as an example threat actor associated with the detection's ATT&CK annotations; no specific campaign or activity is described in this reference.
Listed as an associated threat actor in detection annotations for Ghostscript exploitation; no specific campaign activity is described in this reference.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.