Silence
Aliases: TrueBot
- First seen
- 2016-12-01 00:00:00
- Malware type
- botnet, loader
- Family
- Malware family
- Last IoC activity
- 2026-07-22 01:33:49
- Profile updated
- 2026-07-07 12:54:48
Targeted industries: financial-services government-and-public-sector technology-and-telecommunications
Context
According to PCrisk, Truebot, also known as Silence.Downloader, is a malicious program that has botnet and loader/injector capabilities. This malware can add victims' devices to a botnet and cause chain system infections (i.e., download/install additional malicious programs/components). There is significant variation in Truebot's infection chains and distribution. It is likely that the attackers using this malicious software will continue to make such changes.
Detection coverage
- 1 YARA rules
Used by threat actors
- May 2023 Exfiltration & Wiper Activity (Truebot + FlawedGrace + MBR Killer) (campaign)
- PaperCut Vulnerability Exploitation (campaign)
- 2023 Increased Truebot Activity (campaign)
Exploited vulnerabilities
- CVE-2023-27350 (vulnerability)
Detection rules
- DITEKSHEN_MALWARE_Win_Truebot (yara-rule)
Reports & references
- telekom.com — Cybersecurity Ta505 S Box Of Chocolate 597672 (report)
- reaqta.com — Silence Group Targeting Russian Banks (report)
- Kaspersky — 83009 (report)
- Microsoft — Raspberry Robin Worm Part Of Larger Ecosystem Facilitating Pre Ransomware Activity (report)
- github.com — Tafof Unpacker (report)
- cert.ssi.gouv.fr — Certfr 2020 Cti 006 (report)
- intrinsec.com — Tlp Clear 31072025 Shadowsyndicate Infrastructure Illumination En (report)
- group-ib.com — Silence (report)
- youtube.com — Watch (report)
- blueliv.com — Using Qiling Framework To Unpack Ta505 Packed Samples (report)
- outpost24.com — Using Qiling Framework To Unpack Ta505 Packed Samples (report)
- research.loginsoft.com — Taming The Storm Understanding And Mitigating The Consequences Of Cve 2023 27350 (report)
- Cisco Talos — Breaking The Silence Recent Truebot Activity (report)
- prodaft.com — Rig Tlp Clear 1 (report)
- thedfirreport.com — A Truly Graceful Wipe Out (report)
- malpedia.caad.fkie.fraunhofer.de — Win.Silence (report)
- norfolkinfosec.com — Some Notes On The Silence Proxy (report)
- group-ib.com — Silence 2.0.Going Global (report)
- intezer.com — Silenceofthemoles (report)
- blogs.vmware.com — Carbon Blacks Truebot Detection (report)
- huntress.com — Investigating Intrusions From Intriguing Exploits (report)
- cert.ssi.gouv.fr — Certfr 2020 Cti 004 (report)
- norfolkinfosec.com — How The Silence Downloader Has Evolved Over Time (report)
- CISA — Aa23 187A (report)
- malware.love — Analyzing Truebot Static Unpacking (report)