Strauss-Kahn's legal team is seeking advice from the TD International company, which he hired in 2007 to assistant him in his bid for IMF chief, Reuters reported.
Strauss-Kahn used the firm as his "US-based communications resource," documents from the Foreign Agents Registration section of the US Justice Department have stated.
The firm's founder, William Green, a former US diplomat, has two other partners that are former CIA officers. The firm has also conducted work for Yulia Tymoshenki, the former prime minister of Ukraine.
On Friday, Strauss-Kahn was transferred to a New York City apartment on Broadway after posting a bail of USD 1 million, and a USD 5 million insurance bond. He will be kept under watch 24-hours at day by armed security guards and monitored by an electronic ankle bracelet.
Prosecutors estimate that the security will cost USD 200,000, which Strauss-Kahn will pay for. He had spent four nights in New York's notorious Rikers Island jail complex.
Strauss-Kahn flatly rejected all of the charges against him in court, which include the sexual assault, attempted rape and unlawful imprisonment of a 32-year-old hotel maid.
He is due to enter a formal plea at an arraignment hearing on June 6. If convicted, he could face more than 74 years in jail, with the most serious charges carrying a maximum term of 25 years.
Strauss-Kahn resigned as managing director of the International Monetary Fund on Wednesday amid concerns over the future of ongoing talks about the euro zone debt crisis.
He was expected to declare his candidacy for the French presidency soon and was considered as a strong contender to defeat President Nicolas Sarkozy in next year's elections.