RussiaWidely attributedUnknownMITRE G0034

Sandworm Team

Sandworm Team is a destructive threat group that has been attributed to Russia's General Staff Main Intelligence Directorate (GRU) Main Center for Special Technologies (GTsST) military unit 74455. This group has been active since at least 2009. In October 2020, the US indicted six GRU Unit 74455 officers associated with Sandworm Team for the following cyber operations: the 2015 and 2016 attacks against Ukrainian electrical companies and government organizations, the 2017 worldwide NotPetya attack, targeting of the 2017 French presidential campaign, the 2018 Olympic Destroyer attack against the Winter Olympic Games, the 2018 operation against the Organisation for the Prohibition of Chemical Weapons, and attacks against the country of Georgia in 2018 and 2019. Some of these were conducted with the assistance of GRU Unit 26165, which is also referred to as APT28.

Attribution signal

?Score = mentions × confidence weight, summed across all attributed sources. Higher source diversity increases the score.≥ 10 High≥ 3 Moderate< 3 Low
2.6
Low signal strength
Mentions3
Sources1
High conf.3
Last seenMay 2026
First observed
2017-05-31
Last active
Origin
Russia
Aliases
11
Techniques
0
Campaigns
10
Russia

Attribution signals

3 mentions · 1 source
#1attributedhigh
HUMINT
mandiant
May 2026

"APT44, attributed by multiple governments to Unit 74455 within the Russian Armed Forces' Main Intelligence Directorate (GRU)"

#2identifiedhigh
Malware
mandiant
May 2026

"GTIG has also identified APT44 leveraging WAVESIGN, a Windows Batch script responsible for decrypting and exfiltrating data from Signal Desktop."

#3reportedhigh
MalwareHUMINT
mandiant
May 2026

"Multiple governments have also reported on APT44's use of INFAMOUSCHISEL, malware designed to collect information from Android devices"

Hedge terms observed

attributedidentifiedreported