Web Cookies

T1606.001

Sub-technique of T1606 Forge Web Credentials.View on attack.mitre.org

About this technique

Adversaries may forge web cookies that can be used to gain access to web applications or Internet services. Web applications and services (hosted in cloud SaaS environments or on-premise servers) often use session cookies to authenticate and authorize user access.

Adversaries may generate these cookies in order to gain access to web resources. This differs from Steal Web Session Cookie and other similar behaviors in that the cookies are new and forged by the adversary, rather than stolen or intercepted from legitimate users. Most common web applications have standardized and documented cookie values that can be generated using provided tools or interfaces. The generation of web cookies often requires secret values, such as passwords, Private Keys, or other cryptographic seed values.

Once forged, adversaries may use these web cookies to access resources (Web Session Cookie), which may bypass multi-factor and other authentication protection mechanisms.

Detection rules0

Rules on DetectionCode tagged with T1606.001.

Sigma0

No Sigma rules are mapped to this technique yet.

Splunk0

No Splunk rules are mapped to this technique yet.

Groups0

None recorded.

Software0

None recorded.

Campaigns1

Procedure examples1

Campaigns1

Used byProcedure example
CampaignSolarWinds Compromise

During the SolarWinds Compromise, APT29 bypassed MFA set on OWA accounts by generating a cookie value from a previously stolen secret key.

References3

  1. Pass The Cookie Open source
    Rehberger, J. (2018, December). Pivot to the Cloud using Pass the Cookie. Retrieved April 5, 2019.
  2. Unit 42 Mac Crypto Cookies January 2019 Open source
    Chen, Y., Hu, W., Xu, Z., et. al. (2019, January 31). Mac Malware Steals Cryptocurrency Exchanges’ Cookies. Retrieved October 14, 2019.
  3. Volexity SolarWinds Open source
    Cash, D. et al. (2020, December 14). Dark Halo Leverages SolarWinds Compromise to Breach Organizations. Retrieved December 29, 2020.

Data from MITRE ATT&CK® (Enterprise). ATT&CK® is a registered trademark of The MITRE Corporation.