Equation APT Group - Brandefense
Published: 2022-09-05 · Archived: 2026-04-05 15:38:05 UTC
Group’s Mission and Vision
Equation Group has been conducting cyber operations since 2001 (perhaps it could even start in 1996), and it is
known for its sophisticated methods. The group was discovered in 2014 by Kaspersky Lab. This group uses
encryption and obfuscation a lot. That is why they are called “Equation Group.” This group uses zero-days, gains
persistence by reprogramming hard drive firmware, and if anything goes wrong, malware destroys itself. This
group is linked with Stuxnet and Flame groups since Equation Group had access some zero-days before Stuxnet
and Flame used it. Even though the mistakes and fingerprints that reveal the identity of the group are rare, there
are some clues. For example, this group is linked with NSA since some NSA keywords are found, and malware (a
keylogger named Grok) is also associated with Equation Group and NSA.
Targeted Countries & Industries
Equation Group generally target these sectors:
Governments and diplomatic institutions
Telecommunication
Aerospace
Energy
Nuclear research
Oil and gas
Military
Nanotechnology
Islamic activists and scholars
Mass media
Transportation
Financial institutions
Companies developing cryptographic technologies.
Countries that are in the target of the Equation Group:
Highly targeted:
Iran
Russia
Pakistan
Afghanistan
India
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China
Syria
Mali
Not highly as the previous ones but also targeted ones:
Lebanon
Yemen
UAE
Algeria
Kenya
UK
Libya
Mexico
Qatar
Egypt
Figure 1: Targeted countries
Cyber Attack Lifecycle and TTPs
Equation Group infects its victims by several ways. These ways include:
Worm code
Physical media, CD-ROMs
USB Sticks
Web Exploits
Equation Group uses physical media, worm, or web exploits to infect victims. The compromised computer is used
to execute an installer to begin to escalate privileges. Then the DOUBLEFANTASY malware is installed, and the
victim is verified. Verifying process is done in order to figure out if the victim is essential to hack or not. Then
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DOUBLEFANTASY malware is upgraded to GRAYFISH or EQUATIONDRUG malware which is
sophisticated espionage malware. GRAYFISH uses a bootkit so that it can gain execution privilege as the OS
boots.
Physical devices and USB sticks are used to infect the systems that are not connected to the internet, for example,
nuclear power plants.
The reason why this group is considered sophisticated is that they reprogrammed hard drive firmware so that they
can gain persistence. After reprogramming the firmware, re-infection begins as needed. This is used for the first
time. Therefore, forensics professionals are not looking for there, and this improves persistence.
Tactic Tactic ID Technique
Technique
ID
Defense Evasion TA0005
Execution Guardrails: Environmental
Keying
T1480.001
Hide Artifacts: Hidden File System T1564.005
Discovery TA0007 Peripheral Device Discovery T1120
Persistence, Defense
Evasion
TA0003TA0005 Pre-OS Boot: Component Firmware T1542.002
Group’s Toolset and Related Malware
EQUATIONDRUG – An attack platform which has plugins as modules.
DOUBLEFANTASY – This platform decides if the target is the one that the group wants to attack. If it is,
then the platform is upgraded to EQUATIONDRUG or GRAYFISH.
EQUESTRE – Same as EQUATIONDRUG.
TRIPLEFANTASY – A backdoor which is used with GRAYFISH. It is probably a more recent version of
DOUBLEFANTASY.
GRAYFISH – A sophisticated attack platform which stays in the registry. It gains execution privilege with
a bootkit when the OS boots.
FANNY – This computer worm created in 2008 and used for getting information.
EQUATIONLASER – This is used between 2001 and 2004 and is compatible with Windows 95/98. This is
used somewhere between DOUBLEFANTASY and EQUATIONDRUG.
GROK — A keylogger to steal victims’ credentials.
For detailed information about these, click here.
Recommendations & Mitigations
Kaspersky Lab found 7 exploits are used by Equation Group. At least 4 of these were used as zero-days. You
might consider if your computer is vulnerable to these exploits below. Here are the exploits:
Windows Kernel EoP exploit used in Stuxnet 2009, fixed with MS09-025. (CVE unknown).
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CVE-2012-0159 (fixed with MS12-034)
CVE-2013-3894 (fixed with MS13-081)
CVE-2010-2568 (used by Stuxnet)
CVE-2013-3918
CVE-2012-1723
CVE-2012-4681
Of course there are other mitigations you should consider.
Do not plug a randomly found physical device (USB, CD, …) in your computer since that device might
carry a malware and infect your computer.
Keep your software up-to-date.
Do not click on every link or download files sent via email. Phishing attacks might be a start of a malware
infection. To detect phishing emails click here.
Be careful when entering and logging in some websites such as Islamic Jihadist discussion forums.
Conclusion
Equation Group is a sophisticated and old group. They exploit websites, distribute malware with worms and
physical devices. It is difficult to detect Equation Group’s malware for antivirus software and forensics
professionals. All malware samples that are found are designed for Windows, but some clues show that macOS
and iPhone devices are also not safe. Therefore, this group should not be ignored and underestimated.
Source: https://brandefense.io/blog/apt-groups/equation-apt-group/
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